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Thread
2004-01-28 by timothyconrardy
Hi all Wanted to try out the SPDIF connection on my MP7, so I took an RCA cable and hooked it up to my SBlive sound card. It works, but I get crackles, pops and breakups, even adjusting the volume down. What am I doing wrong? Do I need a special RCA cable? Is there a setting on the MP7 itself? TimC
2004-01-28 by epoq
I also found the MP7 digital output to be extremely weak, resulting in lots of clicks and pops... the way i got around it was to attach a wire from the outer metal of the cable plug to one of the metal screws nearby on the back of the unit, it boosted the signal enough to stop the glitching. Does anyone know if there is a way to boost the signal legitimately? --- In xl7@yahoogroups.com, "timothyconrardy" <tconrardy@h...> wrote:
> Hi all > > Wanted to try out the SPDIF connection on my MP7, so I took an RCA > cable and hooked it up to my SBlive sound card. > > It works, but I get crackles, pops and breakups, even adjusting the > volume down. > > What am I doing wrong? > Do I need a special RCA cable? > Is there a setting on the MP7 itself? > > TimC
2004-01-28 by timothyconrardy
--- In xl7@yahoogroups.com, "epoq" <diveintomercury@y...> wrote: > I also found the MP7 digital output to be extremely weak, resulting > in lots of clicks and pops... the way i got around it was to attach a > wire from the outer metal of the cable plug to one of the metal > screws nearby on the back of the unit, it boosted the signal enough > to stop the glitching. Does anyone know if there is a way to boost > the signal legitimately? This makes me think there is a special SPDIF cable that is shielded. I think I read somewhere that this is what makes a SPDIF cable. anybody? Tim
2004-01-28 by epoq
I thought this too but then i bought a special gold plated digital cable at some ridiculous price and it made no difference over a good quality RCA :) I think there is a genuine issue with signal strength coming out of the MP7. > > This makes me think there is a special SPDIF cable that is shielded.
> I think I read somewhere that this is what makes a SPDIF cable. > > anybody? > > Tim
2004-01-28 by Ravi Ivan Sharma
it could be a clock issue.
----- Original Message -----
From: epoq
To: xl7@yahoogroups.com
Sent: Wednesday, January 28, 2004 1:45 AM
Subject: [xl7] Re: SPDIF
I thought this too but then i bought a special gold plated digital
cable at some ridiculous price and it made no difference over a good
quality RCA :) I think there is a genuine issue with signal strength
coming out of the MP7.
>
> This makes me think there is a special SPDIF cable that is
shielded.
> I think I read somewhere that this is what makes a SPDIF cable.
>
> anybody?
>
> Tim
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[Non-text portions of this message have been removed]2004-01-28 by aeon
on 1/28/04 12:45 AM, epoq wrote: >> This makes me think there is a special SPDIF cable >> that is shielded. I think I read somewhere that this >> is what makes a SPDIF cable. > I thought this too but then i bought a special gold > plated digital cable at some ridiculous price and it > made no difference over a good quality RCA :) I think > there is a genuine issue with signal strength coming > out of the MP7. there is a special requirement for S/PDIF on coax cable! the cable itself needs to be rated for 75 capacitance, the same as video-grade cable. I have used the S/PDIF jack on my XL-7 with no problems whatsoever. cheers, aeon
2004-01-28 by erik_magrini@Baxter.com
Yeah, one of the Emu techs sent me a way to do it when I first joined the list, but I can't find it now, and they won't fess up to how to do it again :) As soon as I find it, I'll post it. rEalm Does anyone know if there is a way to boost the signal legitimately? The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-28 by erik_magrini@Baxter.com
there is a special requirement for S/PDIF on coax cable! >>>Yep, you can use any old RCA cable, but chances are you'll get a lot of clicks and pops. <<< the cable itself needs to be rated for 75? capacitance, the same as video-grade cable. >>>That's 75 ohm for those of you who don't know. These are relatively cheap cables you can get anywhere, even at Best Buy, Circuit City, etc. <<< I have used the S/PDIF jack on my XL-7 with no problems whatsoever. >>>Ditto, I used to get the random click or pop that I had to draw out in Wavelab, but once I got a better cable, that stopped too. The signal is relatively quiet for reasons that have been discussed MANY times on this list, but it works just fine for me. Tips for a better signal: - Use a quality 75ohm cable made for SPDIF transfers, just don't spend a rediculous amount of money (ie Mogami cable) as it's not needed. - Keep the cable as short as possible. - You can try earthing the plug jacket to one of the XX-7's case screws. - Don't cross SPDIF cables over your power cables. <<< rEalm The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-28 by clintfisher
Glad to know it's not just me experiencing this problem. If you hear of a way to insure better SPDIF connectivity, please let us know. I've tried many things, including making sure that the XL-7 is plugged in to the same power strip as the computer and sound- card. It helped a bit, but it's still not perfect. And when I'm recording, perfect is mandatory. I'm using a HOSA 6' "digital" RCA cable, which should be more than adequate for the task. None of my other components display this behavior, and since other people are experiencing this, I'm thinking that the XL-7 SPDIF-out design is pretty much defective. Wah. -Clint --- In xl7@yahoogroups.com, erik_magrini@B... wrote: > Yeah, one of the Emu techs sent me a way to do it when I first joined the > list, but I can't find it now, and they won't fess up to how to do it
> again :) As soon as I find it, I'll post it. > > rEalm > > > > Does anyone know if there is a way to boost > the signal legitimately?
2004-01-28 by erik_magrini@Baxter.com
FYI, I was using a Hosa Digital cable as well and had terrible results with it. Went to Best Buy and bought a Monster Cable SPDIF cable and immediately I had a LOT less crackles in my SPDIF signal. Might want to try another brand, I personally think all Hosa cables are complete crap, audio, midi, whatever. If you're on a budget and need quality cables, I recommend the ProCo brand, though they don't make digital cables. My whole studio is pretty much ProCo Excellines, with some Mogami here and there. rEalm I'm using a HOSA 6' "digital" RCA cable, which should be more than adequate for the task. None of my other components display this behavior, and since other people are experiencing this, I'm thinking that the XL-7 SPDIF-out design is pretty much defective. Wah. The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-28 by aeon
on 1/28/04 10:53 AM, clintfisher wrote: > If you hear of a way to insure better SPDIF connectivity, please let us know. just use the proper cable...and set your other device to use the XL-7 as the clock master. > I'm using a HOSA 6' "digital" RCA cable, which should be more than adequate > for the task. what does "digital" mean here? it simply needs to be a video-grade, 75-ohm cable. > None of my other components display this behavior, and since other people are > experiencing this, I'm thinking that the XL-7 SPDIF-out design is pretty much > defective. I am not experiencing it, nor are others on this list, so I'm thinking something is wrong with your cable, clock sync or method. cheers, aeon
2004-01-28 by epoq
> FYI, I was using a Hosa Digital cable as well and had terrible results > with it. Went to Best Buy and bought a Monster Cable SPDIF cable and > immediately I had a LOT less crackles in my SPDIF signal. Which model? I believe there is a list here: http://www.monstercable.com/THX/audio_interconnects.asp I've had trouble with my monster (until i ground it to the case screws), though i didn't buy the top of the line...
2004-01-29 by aeon
on 1/28/04 4:56 PM, epoq wrote: >> I am not experiencing it, nor are others on this >> list, so I'm thinking something is wrong with your >> cable, clock sync or method. > That is incorrect, i'm using very high quality > shielded cable which meets all required specifications > (http://www.monstercable.com/thx/productPageTHX.asp?pin=1599) I checked your link...nowhere does it state that the cable is rated for 75ohm capacitance...and without knowing that is the case, you cannot be sure that cable is truly suitable for the task. Don't get me wrong...I tend to doubt it isn't rated for that, given the intended purpose...but at the same time, Monster is classic for selling snake oil. > and i still get slight clicks/pops on my MP7 unless i 'ground' the cable to > one of the case screws. I've tried multiple cables and tested these cables > using different devices, the assumption that the cable is at fault is not > always the case. are you certain you do not have other grounding issues in your setup? also, what are you connecting the XL-7 to, and what is your clock setup? wondering and hoping to help, aeon
2004-01-29 by epoq
> Don't get me wrong...I tend to doubt it isn't rated > for that, given the intended purpose...but at the > same time, Monster is classic for selling snake oil. Yeah, i wish they'd put some proper specs on their website, however i do remember checking that the cable was 75ohm after reading the manual when i bought it. Please tell me what brand of cable you would recommend? > are you certain you do not have other grounding issues > in your setup? I have 3 other devices capable of sending/receiving SPDIF, 1) Waveterminal 192L 2) Audiophile USB 3) SBLive Whenever i've made connections between those devices i never had any issues. I tried connecting the MP7 to all three devices and got the same result, random glitches average once every 20 seconds (this stopped once i ground the cable to the case screws). > also, what are you connecting the XL-7 to, and what is > your clock setup? I'm primarily trying to hook it up to my audiophile USB and as i said, i've had no trouble since i ground the cable to the case screws. There aren't any SPDIF related options in the cards software setup, but i read in the manual that the card automatically slaves to the SPDIF input when it is enabled.
2004-01-29 by erik_magrini@Baxter.com
Yes, but it's been extrememly minor since I got a better cable. In my entire live set I recorded and posted not too long ago, there was only 1 small click in 74 minutes of playing. That's pretty good IMO. rEalm rEalm has also admitted to experiencing difficulty with the digital out, i don't think i'm the exception here. Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/xl7/ To unsubscribe from this group, send an email to: xl7-unsubscribe@yahoogroups.com Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-29 by erik_magrini@Baxter.com
The one I got is no longer on their site, but it's very similiar to this one: http://www.monstercable.com/productPage.asp?pin=125 Those prices on the site are way off from actual street price too. rEalm Which model? I believe there is a list here: http://www.monstercable.com/THX/audio_interconnects.asp I've had trouble with my monster (until i ground it to the case screws), though i didn't buy the top of the line... Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/xl7/ To unsubscribe from this group, send an email to: xl7-unsubscribe@yahoogroups.com Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-29 by erik_magrini@Baxter.com
Yeah, that's a high quality audio cable, not a SPDIF cable BTW. rEalm > That is incorrect, i'm using very high quality > shielded cable which meets all required specifications > (http://www.monstercable.com/thx/productPageTHX.asp?pin=1599) I checked your link...nowhere does it state that the cable is rated for 75ohm capacitance...and without knowing that is the case, you cannot be sure that cable is truly suitable for the task. The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-01-29 by clintfisher
--- In xl7@yahoogroups.com, aeon <aeonlux@c...> wrote: --snip--- > I am not experiencing it, nor are others on this list, so I'm thinking > something is wrong with your cable, clock sync or method. Actually, others on this list *are* experiencing this, which is why I decided to chime in. I'm connecting the XL-7 to an Aardvark Q10 and have tried all clock sync methods available in the driver. It's important to note that no other SPDIF gear I have has a problem connecting through my Hosa "digital" (SPDIF) cable to the Q10. Units tried: Apogee Mini-Me, CO2 (optical-spdif converter), C03 (higher- quality optical-spdif converter). All perform flawlessly. Oh yes, I have tried different (and shorter) cables with the same results. Others here have indicated a weak signal coming from the XL-7. Granted, I have not done anything *myself* to measure the actual SPDIF signal strength coming from the XL-7 versus my other devices, but this does concur with the behavior I am experiencing. My next test will be to use a *very* short cable out to the CO-2 and hopefully use it as an amplifer in between my Q10 and the XL-7. The bottom line is that other equipment works fine while the XL-7 suffers. I believe it to be a defective design or output circut. Others on this list have corroborated this. The biggest reason for me wanting to use the SPDIF out, aside from the panacea of "perfect digital quality" is that the Q10 has ten input channels, 8 analog, and 2 digital via SPDIF. This effectively frees up two analog channels for me, which is invaluable. Any information anyone can offer on a way to *resolve* this issue would be most appreciated. I'll try hardwiring the cable ground too. -Clint
2004-01-29 by glennjamison
I have had problems with the s/pdif output on two separate MP-7s. I haven't been able to get either to work and I also have no problems with any of my other s/pdif gear. I've tried plugging the MP-7 into various s/pdif ports with various cables, and since I've had the problem with 2 separate MP-7's, I'm assuming it's not a problem with the unit. I have set it to s/pdif and not aes/ebu in the settings in the MP-7. What I do get when I hook it up is a whole lot of digital noise. I've tried synching word clock to the s/pdif port on the MP-7 and I've also tried using a sample rate converter so that I don't have to sync to the MP-7's s/pdif port, but nothing seems to work. If anyone has any ideas, please let me know. Glenn --- In xl7@yahoogroups.com, "clintfisher" <clint@f...> wrote: > --- In xl7@yahoogroups.com, aeon <aeonlux@c...> wrote: > --snip--- > > I am not experiencing it, nor are others on this list, so I'm > thinking > > something is wrong with your cable, clock sync or method. > > Actually, others on this list *are* experiencing this, which is why I > decided to chime in. I'm connecting the XL-7 to an Aardvark Q10 and > have tried all clock sync methods available in the driver. > > It's important to note that no other SPDIF gear I have has a problem > connecting through my Hosa "digital" (SPDIF) cable to the Q10. Units > tried: Apogee Mini-Me, CO2 (optical-spdif converter), C03 (higher- > quality optical-spdif converter). All perform flawlessly. > > Oh yes, I have tried different (and shorter) cables with the same > results. > > Others here have indicated a weak signal coming from the XL-7. > Granted, I have not done anything *myself* to measure the actual > SPDIF signal strength coming from the XL-7 versus my other devices, > but this does concur with the behavior I am experiencing. > > My next test will be to use a *very* short cable out to the CO-2 and > hopefully use it as an amplifer in between my Q10 and the XL-7. > > The bottom line is that other equipment works fine while the XL-7 > suffers. I believe it to be a defective design or output circut. > Others on this list have corroborated this. > > The biggest reason for me wanting to use the SPDIF out, aside from > the panacea of "perfect digital quality" is that the Q10 has ten > input channels, 8 analog, and 2 digital via SPDIF. This effectively > frees up two analog channels for me, which is invaluable. > > Any information anyone can offer on a way to *resolve* this issue > would be most appreciated. I'll try hardwiring the cable ground too. > > -Clint
2004-01-30 by Cornell
I don't know if someone's asked about this before I can't seem to get my mp to pan instruments to the left. The sound "dies" on me the further left I go. Panning to the right is not a problem. Is there some easy fix to this. Thanks!! --------------------------------- Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! [Non-text portions of this message have been removed]
2004-01-30 by dj 61
Strange, with all presets? When you have the pan centered does it come out of both speakers evenly? Have you checked your cables and sound card mixer or whatever else you might be running it through? --- In xl7@yahoogroups.com, Cornell <brothacee@y...> wrote: > I don't know if someone's asked about this before I can't seem to get my mp to pan instruments to the left. The sound "dies" on me the further left I go. Panning to the right is not a problem. Is there some easy fix to this. Thanks!!
> > > --------------------------------- > Do you Yahoo!? > Yahoo! SiteBuilder - Free web site building tool. Try it! > > [Non-text portions of this message have been removed]
2004-02-04 by Alan Wrightson
I am having the same SPDIF problems as described in this thread with my PX-7. I have it going into an alesis masterlink via a tc finalizer express, alesis deq320d and m audio c03. Whichever combination of re- routing, and whichever settings on the px-7 I use (aes / spdif) the masterlink loses sync with the px-7 every 20 seconds or so. Most of the gear has status lights and I have narrowed it down to the px-7 only (or the one cable) but I only just unpackaged the cable today from new, and it is a proel top of the line spdif. What proves it to me is that the exact same setup has worked without a single glitch for 6 months when mastering from a d8b and mx2424. No, it's definitely the emu hardware. So how do I go about earthing the cable? Just a couple of crocodile clips and some solder!?? Alan --- In xl7@yahoogroups.com, "glennjamison" <glennjamison@h...> wrote: > I have had problems with the s/pdif output on two separate MP-7s. I > haven't been able to get either to work and I also have no problems > with any of my other s/pdif gear. I've tried plugging the MP-7 into > various s/pdif ports with various cables, and since I've had the > problem with 2 separate MP-7's, I'm assuming it's not a problem with > the unit. I have set it to s/pdif and not aes/ebu in the settings in > the MP-7. What I do get when I hook it up is a whole lot of digital > noise. I've tried synching word clock to the s/pdif port on the MP- 7 > and I've also tried using a sample rate converter so that I don't > have to sync to the MP-7's s/pdif port, but nothing seems to work. > If anyone has any ideas, please let me know. > > Glenn > > --- In xl7@yahoogroups.com, "clintfisher" <clint@f...> wrote: > > --- In xl7@yahoogroups.com, aeon <aeonlux@c...> wrote: > > --snip--- > > > I am not experiencing it, nor are others on this list, so I'm > > thinking > > > something is wrong with your cable, clock sync or method. > > > > Actually, others on this list *are* experiencing this, which is why > I > > decided to chime in. I'm connecting the XL-7 to an Aardvark Q10 > and > > have tried all clock sync methods available in the driver. > > > > It's important to note that no other SPDIF gear I have has a > problem > > connecting through my Hosa "digital" (SPDIF) cable to the Q10. > Units > > tried: Apogee Mini-Me, CO2 (optical-spdif converter), C03 (higher- > > quality optical-spdif converter). All perform flawlessly. > > > > Oh yes, I have tried different (and shorter) cables with the same > > results. > > > > Others here have indicated a weak signal coming from the XL-7. > > Granted, I have not done anything *myself* to measure the actual > > SPDIF signal strength coming from the XL-7 versus my other devices, > > but this does concur with the behavior I am experiencing. > > > > My next test will be to use a *very* short cable out to the CO-2 > and > > hopefully use it as an amplifer in between my Q10 and the XL-7. > > > > The bottom line is that other equipment works fine while the XL-7 > > suffers. I believe it to be a defective design or output circut. > > Others on this list have corroborated this. > > > > The biggest reason for me wanting to use the SPDIF out, aside from
> > the panacea of "perfect digital quality" is that the Q10 has ten > > input channels, 8 analog, and 2 digital via SPDIF. This > effectively > > frees up two analog channels for me, which is invaluable. > > > > Any information anyone can offer on a way to *resolve* this issue > > would be most appreciated. I'll try hardwiring the cable ground > too. > > > > -Clint
2004-02-04 by timothyconrardy
> So how do I go about earthing the cable? Just a couple of crocodile > clips and some solder!?? > > Alan Ok..Just got this working for me, and my SPDIF works well now. thanks to this group!) All I did was take a wire ( in this case it was a long tie wrap for garbage bags:-) and simply unscrewed my RCA connection a bit , then wrap the wire to to it, then screwed it back on, then for the other end, I loosened the bolt (from the 12DC lamp) put the exposed wire under the bolt , and tightened it up so it's secure against the chassis. No problems now, however the level is a bit low.But VERY clean! Tim
2004-02-09 by Mike-E
Hello list, I've connected my XL-7 to a FireWire Audiophile external audio/midi card. Now I have two problems. 1) Connecting via S/PDIF: The signal is weak. It's about half the volume of when using analog connection. Besides that I am restricted to using 44.1kHz (the cards max is 96kHz) because I have to set the clock to external. When using internal on the Audiophile, the signal gets disturbed (clicks and plops). The trick of grounding the S/PDIF output didn't fix it. Am I doing something wrong? 2) Connecting analog (main or sub): A humming sound is added to the signal. When I close to software mixer of the Audiophile the humming stops, but still leaves a lot of noise en crackles. Totally not acceptable. Are both problems recognized by anyone? Do the seem to be related? I also checked the XL-7 on a simple home stereo. It also produces noise, but it's only noticeable on high volume. Regards, Maik --- In xl7@yahoogroups.com, "Alan Wrightson" <sapalan@h...> wrote: > I am having the same SPDIF problems as described in this thread with > my PX-7. I have it going into an alesis masterlink via a tc finalizer > express, alesis deq320d and m audio c03. Whichever combination of re- > routing, and whichever settings on the px-7 I use (aes / spdif) the > masterlink loses sync with the px-7 every 20 seconds or so. Most of > the gear has status lights and I have narrowed it down to the px-7 > only (or the one cable) but I only just unpackaged the cable today > from new, and it is a proel top of the line spdif. > > What proves it to me is that the exact same setup has worked without > a single glitch for 6 months when mastering from a d8b and mx2424. > > No, it's definitely the emu hardware. > > So how do I go about earthing the cable? Just a couple of crocodile > clips and some solder!?? > > Alan > > --- In xl7@yahoogroups.com, "glennjamison" <glennjamison@h...> wrote: > > I have had problems with the s/pdif output on two separate MP- 7s. > I > > haven't been able to get either to work and I also have no problems > > with any of my other s/pdif gear. I've tried plugging the MP-7 into > > various s/pdif ports with various cables, and since I've had the > > problem with 2 separate MP-7's, I'm assuming it's not a problem > with > > the unit. I have set it to s/pdif and not aes/ebu in the settings > in > > the MP-7. What I do get when I hook it up is a whole lot of > digital > > noise. I've tried synching word clock to the s/pdif port on the MP- > 7 > > and I've also tried using a sample rate converter so that I don't > > have to sync to the MP-7's s/pdif port, but nothing seems to work. > > If anyone has any ideas, please let me know. > > > > Glenn > > > > --- In xl7@yahoogroups.com, "clintfisher" <clint@f...> wrote: > > > --- In xl7@yahoogroups.com, aeon <aeonlux@c...> wrote: > > > --snip--- > > > > I am not experiencing it, nor are others on this list, so I'm > > > thinking > > > > something is wrong with your cable, clock sync or method. > > > > > > Actually, others on this list *are* experiencing this, which is > why > > I > > > decided to chime in. I'm connecting the XL-7 to an Aardvark Q10 > > and > > > have tried all clock sync methods available in the driver. > > > > > > It's important to note that no other SPDIF gear I have has a > > problem > > > connecting through my Hosa "digital" (SPDIF) cable to the Q10. > > Units > > > tried: Apogee Mini-Me, CO2 (optical-spdif converter), C03 > (higher- > > > quality optical-spdif converter). All perform flawlessly. > > > > > > Oh yes, I have tried different (and shorter) cables with the same > > > results. > > > > > > Others here have indicated a weak signal coming from the XL-7. > > > Granted, I have not done anything *myself* to measure the actual > > > SPDIF signal strength coming from the XL-7 versus my other > devices, > > > but this does concur with the behavior I am experiencing. > > > > > > My next test will be to use a *very* short cable out to the CO- 2 > > and > > > hopefully use it as an amplifer in between my Q10 and the XL-7. > > > > > > The bottom line is that other equipment works fine while the XL- 7 > > > suffers. I believe it to be a defective design or output > circut. > > > Others on this list have corroborated this. > > > > > > The biggest reason for me wanting to use the SPDIF out, aside > from > > > the panacea of "perfect digital quality" is that the Q10 has ten > > > input channels, 8 analog, and 2 digital via SPDIF. This > > effectively > > > frees up two analog channels for me, which is invaluable. > > > > > > Any information anyone can offer on a way to *resolve* this issue > > > would be most appreciated. I'll try hardwiring the cable ground
> > too. > > > > > > -Clint
2004-02-09 by Aaron Eppolito
--- Mike-E <d_jumpmaster@...> wrote: > 1) Connecting via S/PDIF: > The signal is weak. It's about half the volume of when using analog See the myriad posts on this subject. Short answer? Normalize is your friend. > When using internal on the Audiophile, the signal gets disturbed > (clicks and plops). The trick of grounding the S/PDIF output didn't > fix it. Am I doing something wrong? Yes. As with *ALL* digital systems, there must be one master clock or else you will get pops. Since the XL-7 doesn't have a word clock in jack, you are forced to use the XL-7's clock as the master. > 2) Connecting analog (main or sub): > A humming sound is added to the signal. When I close to software > mixer of the Audiophile the humming stops, but still leaves a lot of > noise en crackles. Totally not acceptable. This probably is a ground loop issue. Since I can never get rid of ground loops either (I'm notoriously bad at solving this problem) I'll defer to someone else who has knowledge in this area. -Aaron PS. I hate me some "disturbed plops"... =) __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html
2004-02-10 by Mike-E
What about this information I've found? I'm no electrician so I don't know if this does make any sence regarding the E-mu Command Stations. \/ \/ \/ \/ S/PDIF-connection (also known as IEC60958) was also originally designed to be transformer isolated at the transmitting end. So theoretically ground loops should be impossible, as each coaxial S/P- DIF output should be equipped with an insulating transformer, in order to avoid ground loop problems. But in reality the sitation is not so good, because in some cases because in some equipments the S/PDIF-output are not isolated from the rest of the circuitry. Reasons for S/PDIF-problems In reality many coaxial S/P-DIF inputs and outputs of soundcards and such devices lack such transformers. Maybe those products are so cost sensitive that the manufactuers have to cut corners in this way. And, even if the coaxial S/P-DIF output of an audio component is equipped with a transfomer, hat doesn't mean that the output is isolated, because in some equipments the ground of the S/PDIF output connector (RCA-connector) is still permanetly connected to the same ground as all the audio connectors instead of correctly left floating. Usually the absense of isolation in S/PDIF-connection is not a problem in normal use, but can be a problem among with those audio experts who want the best sound quality without humming. Usually the noise and hummign problems are the reasons to go to digital audio transmission, and it is quite sad that some manufactuers put out products which can't usually fulfill their promises in real life applications, because of the S/PDIF-interface ground loop problem. Solving the problems with S/PDIF If your sound card equipped with optical S/P-DIF (Toslink) inputs and outputs, try to use them instead of coaxial ones. The optical cable will mode the digital audio signals but at the same time provides a complete galvanic isolation between equipments. So optical interfaces are free from humming. If you want to use the coaxial output and your equipment with S/PDIF output lacks the output isolation transformer on S/PDIF-connection you have to make your own extra isolation transformer. Elector Electronics magazine issue 7-8/1999 recommend building the transformer for S/PDIF isolation in the following way: The transformer must have good coupling factor, so the transformer core must be a toroidal core made of high permiability material. The prototype described in the magazine uses Philips Type TN13/7.5/5-3E25 core which has permiability rating (yt) of 4500. THe primary and secondary windongs consisted of 6 turns of 0.5 mm diameter enamelled copper wire laid on opposite sides of toroid. The transformer used in this prototype was described to have a bandwidth raged from 50 kHz to 17 MHz, which is more than adequate for an S/PDIF link. The transformer should be fitted directly to the source and the receiving end must be protperly terminated for reliable operation. The reason for this is that the transformer input and output impedances are not exactly 75 ohm. --- In xl7@yahoogroups.com, Aaron Eppolito <synthesis77@y...> wrote: > --- Mike-E <d_jumpmaster@y...> wrote: > > 1) Connecting via S/PDIF: > > The signal is weak. It's about half the volume of when using analog > > See the myriad posts on this subject. Short answer? Normalize is your > friend. > > > When using internal on the Audiophile, the signal gets disturbed > > (clicks and plops). The trick of grounding the S/PDIF output didn't > > fix it. Am I doing something wrong? > > Yes. As with *ALL* digital systems, there must be one master clock or > else you will get pops. Since the XL-7 doesn't have a word clock in > jack, you are forced to use the XL-7's clock as the master. > > > 2) Connecting analog (main or sub): > > A humming sound is added to the signal. When I close to software > > mixer of the Audiophile the humming stops, but still leaves a lot of > > noise en crackles. Totally not acceptable. > > This probably is a ground loop issue. Since I can never get rid of > ground loops either (I'm notoriously bad at solving this problem) I'll
> defer to someone else who has knowledge in this area. > > -Aaron > > PS. I hate me some "disturbed plops"... =) > > __________________________________ > Do you Yahoo!? > Yahoo! Finance: Get your refund fast by filing online. > http://taxes.yahoo.com/filing.html
2004-02-10 by PRO DUCTION
do anyone know how to fix this (humm) max is 96kHz) because I have to set the clock to external. When using internal on the Audiophile, the signal gets disturbed (clicks and plops). The trick of grounding the S/PDIF output didn't fix it. Am I doing something wrong? 2) Connecting analog (main or sub): A humming sound is added to the signal. When I close to software mixer of the Audiophile the humming stops, but still leaves a lot of noise en crackles. Totally not acceptable. Are both problems recognized by anyone? Do the seem to be related? I also checked the XL-7 on a simple home stereo. It also produces noise, but it's only noticeable on high volume. Regards, Maik --- In xl7@yahoogroups.com, "Alan Wrightson" <sapalan@h...> wrote: > I am having the same SPDIF problems as described in this thread with > my PX-7. I have it going into an alesis masterlink via a tc finalizer > express, alesis deq320d and m audio c03. Whichever combination of re- > routing, and whichever settings on the px-7 I use (aes / spdif) the > masterlink loses sync with the px-7 every 20 seconds or so. Most of > the gear has status lights and I have narrowed it down to the px-7 > only (or the one cable) but I only just unpackaged the cable today > from new, and it is a proel top of the line spdif. > > What proves it to me is that the exact same setup has worked without > a single glitch for 6 months when mastering from a d8b and mx2424. > > No, it's definitely the emu hardware. > > So how do I go about earthing the cable? Just a couple of crocodile > clips and some solder!?? > > Alan > > --- In xl7@yahoogroups.com, "glennjamison" <glennjamison@h...> wrote: > > I have had problems with the s/pdif output on two separate MP- 7s. > I > > haven't been able to get either to work and I also have no problems > > with any of my other s/pdif gear. I've tried plugging the MP-7 into > > various s/pdif ports with various cables, and since I've had the > > problem with 2 separate MP-7's, I'm assuming it's not a problem > with > > the unit. I have set it to s/pdif and not aes/ebu in the settings > in > > the MP-7. What I do get when I hook it up is a whole lot of > digital > > noise. I've tried synching word clock to the s/pdif port on the MP- > 7 > > and I've also tried using a sample rate converter so that I don't > > have to sync to the MP-7's s/pdif port, but nothing seems to work. > > If anyone has any ideas, please let me know. > > > > Glenn > > > > --- In xl7@yahoogroups.com, "clintfisher" <clint@f...> wrote: > > > --- In xl7@yahoogroups.com, aeon <aeonlux@c...> wrote: > > > --snip--- > > > > I am not experiencing it, nor are others on this list, so I'm > > > thinking > > > > something is wrong with your cable, clock sync or method. > > > > > > Actually, others on this list *are* experiencing this, which is > why > > I > > > decided to chime in. I'm connecting the XL-7 to an Aardvark Q10 > > and > > > have tried all clock sync methods available in the driver. > > > > > > It's important to note that no other SPDIF gear I have has a > > problem > > > connecting through my Hosa "digital" (SPDIF) cable to the Q10. > > Units > > > tried: Apogee Mini-Me, CO2 (optical-spdif converter), C03 > (higher- > > > quality optical-spdif converter). All perform flawlessly. > > > > > > Oh yes, I have tried different (and shorter) cables with the same > > > results. > > > > > > Others here have indicated a weak signal coming from the XL-7. > > > Granted, I have not done anything *myself* to measure the actual > > > SPDIF signal strength coming from the XL-7 versus my other > devices, > > > but this does concur with the behavior I am experiencing. > > > > > > My next test will be to use a *very* short cable out to the CO- 2 > > and > > > hopefully use it as an amplifer in between my Q10 and the XL-7. > > > > > > The bottom line is that other equipment works fine while the XL- 7 > > > suffers. I believe it to be a defective design or output > circut. > > > Others on this list have corroborated this. > > > > > > The biggest reason for me wanting to use the SPDIF out, aside > from > > > the panacea of "perfect digital quality" is that the Q10 has ten > > > input channels, 8 analog, and 2 digital via SPDIF. This > > effectively > > > frees up two analog channels for me, which is invaluable. > > > > > > Any information anyone can offer on a way to *resolve* this issue > > > would be most appreciated. I'll try hardwiring the cable ground > > too. > > > > > > -Clint Yahoo! Groups SponsorADVERTISEMENT --------------------------------- Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/xl7/ To unsubscribe from this group, send an email to: xl7-unsubscribe@yahoogroups.com Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing [Non-text portions of this message have been removed]
2004-02-10 by erik_magrini@Baxter.com
If you're getting a hum in the main audio outs, chances are it's a ground loop. Other culprit could be power cables laying on your audio cables (they should always cross at 90 degree angles if they must touch). You can test the ground loop problem by using a "ground lift" plug adaptor available from pretty much any electronics stores. IF his fixes the problem though, DO NOT continue to use it as a solution. You could potentially cause a lot of problems with your XX_7 by leaving it ungrounded. It will at least help you narrow down your trouble shooting. Plenty of articles online about resoving ground loops, just do a google search. rEalm do anyone know how to fix this (humm) 2) Connecting analog (main or sub): A humming sound is added to the signal. When I close to software mixer of the Audiophile the humming stops, but still leaves a lot of noise en crackles. Totally not acceptable. Are both problems recognized by anyone? Do the seem to be related? I also checked the XL-7 on a simple home stereo. It also produces noise, but it's only noticeable on high volume. Regards, Maik The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-02-10 by Mike-E
It is a ground loop indeed. The thing causing it is the power supply of my laptop. As I also need this supply, maybe I should "ground lift" this device instead of the XL? As a permanent solution? Maik --- In xl7@yahoogroups.com, erik_magrini@B... wrote: > If you're getting a hum in the main audio outs, chances are it's a ground > loop. Other culprit could be power cables laying on your audio cables > (they should always cross at 90 degree angles if they must touch). You > can test the ground loop problem by using a "ground lift" plug adaptor > available from pretty much any electronics stores. IF his fixes the > problem though, DO NOT continue to use it as a solution. You could > potentially cause a lot of problems with your XX_7 by leaving it > ungrounded. It will at least help you narrow down your trouble shooting. > Plenty of articles online about resoving ground loops, just do a google > search. > > rEalm > > > > do anyone know how to fix this (humm) > > 2) Connecting analog (main or sub): > A humming sound is added to the signal. When I close to software > mixer of the Audiophile the humming stops, but still leaves a lot of > noise en crackles. Totally not acceptable. > > Are both problems recognized by anyone? Do the seem to be related? > > I also checked the XL-7 on a simple home stereo. It also produces > noise, but it's only noticeable on high volume. > > Regards, > Maik > > > > > > > > > > > The information transmitted is intended only for the person(s)or entity > to which it is addressed and may contain confidential and/or legally > privileged material. Delivery of this message to any person other than > the intended recipient(s) is not intended in any way to waive privilege > or confidentiality. Any review, retransmission, dissemination or other > use of, or taking of any action in reliance upon, this information by
> entities other than the intended recipient is prohibited. If you > receive this in error, please contact the sender and delete the > material from any computer. > > For Translation: > > http://www.baxter.com/email_disclaimer > > > [Non-text portions of this message have been removed]
2004-02-10 by erik_magrini@Baxter.com
Hmmm, I personally wouldn't lift the ground on anything (though the laptop
would be my choice over the XL-7). Have your tried a different power
strip?
rEalm
Mike-E <d_jumpmaster@...>
02/10/2004 09:14 AM
Please respond to xl7
To: xl7@yahoogroups.com
cc: Subject: [xl7] Re: SPDIF Problems (and analog hum)me too It is a ground loop indeed. The thing causing it is the power supply of my laptop. As I also need this supply, maybe I should "ground lift" this device instead of the XL? As a permanent solution? Maik --- In xl7@yahoogroups.com, erik_magrini@B... wrote: > If you're getting a hum in the main audio outs, chances are it's a ground > loop. Other culprit could be power cables laying on your audio cables > (they should always cross at 90 degree angles if they must touch). You > can test the ground loop problem by using a "ground lift" plug adaptor > available from pretty much any electronics stores. IF his fixes the > problem though, DO NOT continue to use it as a solution. You could > potentially cause a lot of problems with your XX_7 by leaving it > ungrounded. It will at least help you narrow down your trouble shooting. > Plenty of articles online about resoving ground loops, just do a google > search. > > rEalm > > > > do anyone know how to fix this (humm) > > 2) Connecting analog (main or sub): > A humming sound is added to the signal. When I close to software > mixer of the Audiophile the humming stops, but still leaves a lot of > noise en crackles. Totally not acceptable. > > Are both problems recognized by anyone? Do the seem to be related? > > I also checked the XL-7 on a simple home stereo. It also produces > noise, but it's only noticeable on high volume. > > Regards, > Maik > > > > > > > > > > > The information transmitted is intended only for the person(s)or entity > to which it is addressed and may contain confidential and/or legally > privileged material. Delivery of this message to any person other than > the intended recipient(s) is not intended in any way to waive privilege > or confidentiality. Any review, retransmission, dissemination or other > use of, or taking of any action in reliance upon, this information by > entities other than the intended recipient is prohibited. If you > receive this in error, please contact the sender and delete the > material from any computer. > > For Translation: > > http://www.baxter.com/email_disclaimer > > > [Non-text portions of this message have been removed] Yahoo! Groups Links The information transmitted is intended only for the person(s)or entity to which it is addressed and may contain confidential and/or legally privileged material. Delivery of this message to any person other than the intended recipient(s) is not intended in any way to waive privilege or confidentiality. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by entities other than the intended recipient is prohibited. If you receive this in error, please contact the sender and delete the material from any computer. For Translation: http://www.baxter.com/email_disclaimer [Non-text portions of this message have been removed]
2004-02-10 by electrolama
Mike, I suggest that you avoid permanently lifting any grounds if possible. That ground prong is always there for a reason. Although "your mileage may vary", I successfully removed ALL ground- loop hum from my system using EBtech's Hum Eliminators. If you are not familiar with them, they are essentially a stereo unity gain isolation transformer with quarter inch jacks in a rugged steel box. About $60 each at Guitar Center. They are magical, and don't color the sound at all. ...but it won't work for SPDIF I/O. EBtech also just started offering a smaller and simpler solution, I think they call it the "Hum-X", which looks ostensibly like a ground lift adapter, but is actually an isolation transformer for the AC power side of things. I haven't used these, so I can't testify. I guess if you know for a fact that the hum is induced by your laptop PS, you might try the Hum-X. You'll have to look around--they just hit the market, I think. Expect to pay around $40. Well worth it if it solves your problem! Good luck Andy --- In xl7@yahoogroups.com, "Mike-E" <d_jumpmaster@y...> wrote: > It is a ground loop indeed. The thing causing it is the power supply > of my laptop. As I also need this supply, maybe I should "ground > lift" this device instead of the XL? As a permanent solution? > Maik > > > --- In xl7@yahoogroups.com, erik_magrini@B... wrote: > > If you're getting a hum in the main audio outs, chances are it's a > ground > > loop. Other culprit could be power cables laying on your audio > cables > > (they should always cross at 90 degree angles if they must touch). > You > > can test the ground loop problem by using a "ground lift" plug > adaptor > > available from pretty much any electronics stores. IF his fixes > the > > problem though, DO NOT continue to use it as a solution. You could > > potentially cause a lot of problems with your XX_7 by leaving it > > ungrounded. It will at least help you narrow down your trouble > shooting. > > Plenty of articles online about resoving ground loops, just do a > google > > search. > > > > rEalm > > > > > > > > do anyone know how to fix this (humm) > > > > 2) Connecting analog (main or sub): > > A humming sound is added to the signal. When I close to software > > mixer of the Audiophile the humming stops, but still leaves a lot > of > > noise en crackles. Totally not acceptable. > > > > Are both problems recognized by anyone? Do the seem to be related? > > > > I also checked the XL-7 on a simple home stereo. It also produces > > noise, but it's only noticeable on high volume. > > > > Regards, > > Maik > > > > > > > > > > > > > > > > > > > > > > The information transmitted is intended only for the person(s)or > entity > > to which it is addressed and may contain confidential and/or > legally > > privileged material. Delivery of this message to any person other > than > > the intended recipient(s) is not intended in any way to waive > privilege > > or confidentiality. Any review, retransmission, dissemination or > other > > use of, or taking of any action in reliance upon, this information
> by > > entities other than the intended recipient is prohibited. If you > > receive this in error, please contact the sender and delete the > > material from any computer. > > > > For Translation: > > > > http://www.baxter.com/email_disclaimer > > > > > > [Non-text portions of this message have been removed]
2004-02-10 by Mike-E
Well THANKS!! That's a good hint. I'm going to take a look at these units. The S/PDIF signal isn't suffering from any hum. It's just weak. Does anybody know if there are any signal enhancers for this problem? Maik --- In xl7@yahoogroups.com, "electrolama" <andylama@c...> wrote: > Mike, > > I suggest that you avoid permanently lifting any grounds if > possible. That ground prong is always there for a reason. > > Although "your mileage may vary", I successfully removed ALL ground- > loop hum from my system using EBtech's Hum Eliminators. If you are > not familiar with them, they are essentially a stereo unity gain > isolation transformer with quarter inch jacks in a rugged steel box. > About $60 each at Guitar Center. They are magical, and don't color > the sound at all. ...but it won't work for SPDIF I/O. > > EBtech also just started offering a smaller and simpler solution, I > think they call it the "Hum-X", which looks ostensibly like a ground > lift adapter, but is actually an isolation transformer for the AC > power side of things. I haven't used these, so I can't testify. > > I guess if you know for a fact that the hum is induced by your laptop > PS, you might try the Hum-X. You'll have to look around--they just > hit the market, I think. Expect to pay around $40. Well worth it if > it solves your problem! > > Good luck > > Andy > > > > > --- In xl7@yahoogroups.com, "Mike-E" <d_jumpmaster@y...> wrote: > > It is a ground loop indeed. The thing causing it is the power > supply > > of my laptop. As I also need this supply, maybe I should "ground > > lift" this device instead of the XL? As a permanent solution? > > Maik > > > > > > --- In xl7@yahoogroups.com, erik_magrini@B... wrote: > > > If you're getting a hum in the main audio outs, chances are it's > a > > ground > > > loop. Other culprit could be power cables laying on your audio > > cables > > > (they should always cross at 90 degree angles if they must > touch). > > You > > > can test the ground loop problem by using a "ground lift" plug > > adaptor > > > available from pretty much any electronics stores. IF his fixes > > the > > > problem though, DO NOT continue to use it as a solution. You > could > > > potentially cause a lot of problems with your XX_7 by leaving it > > > ungrounded. It will at least help you narrow down your trouble > > shooting. > > > Plenty of articles online about resoving ground loops, just do a > > google > > > search. > > > > > > rEalm > > > > > > > > > > > > do anyone know how to fix this (humm) > > > > > > 2) Connecting analog (main or sub): > > > A humming sound is added to the signal. When I close to software > > > mixer of the Audiophile the humming stops, but still leaves a lot > > of > > > noise en crackles. Totally not acceptable. > > > > > > Are both problems recognized by anyone? Do the seem to be related? > > > > > > I also checked the XL-7 on a simple home stereo. It also produces > > > noise, but it's only noticeable on high volume. > > > > > > Regards, > > > Maik > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > The information transmitted is intended only for the person(s) or > > entity > > > to which it is addressed and may contain confidential and/or > > legally > > > privileged material. Delivery of this message to any person other > > than > > > the intended recipient(s) is not intended in any way to waive > > privilege > > > or confidentiality. Any review, retransmission, dissemination or > > other > > > use of, or taking of any action in reliance upon, this > information > > by > > > entities other than the intended recipient is prohibited. If you
> > > receive this in error, please contact the sender and delete the > > > material from any computer. > > > > > > For Translation: > > > > > > http://www.baxter.com/email_disclaimer > > > > > > > > > [Non-text portions of this message have been removed]