Thanks Ed !
For i don't know what is the technical background of people on this
forum (i fell like some guys have a good one but...) i try to keep it
simple with everyday's life comparisons. If possible, sometimes it can
be hard to find a good one...
Cheers.
J.F.
Ed Edwards a écrit :
>
> Jeff’s answer was pretty good. Here’s my try at it:
>
> The danger is that each output needs to have a load equal to its needs. A
> see-saw with a fat kid on one side might launch the skinny kid into orbit.
> So if you’ve got headphone levels of wattage (voltage times current) it is
> meant to push the heavy load of the 32 ohm headphone speakers. Now the
> confusing thing is the impedance. As the impedance DECREASES the wattage
> necessary to do the work INCREASES. So the 32 ohm impedance at the
> headphone jack has a lot of wattage available. On the other jacks, the
> line
> levels, the impedance is (maybe this helps, warning- technical:
> http://artsites.ucsc.edu/EMS/music/tech_background/TE-15/teces_15.html
> <http://artsites.ucsc.edu/EMS/music/tech_background/TE-15/teces_15.html>)
> about 3000 ohms. So you need much less wattage to get the signal into the
> next device. Putting headphone levels into line level inputs can literally
> burn them up due to the excess. If you could read the schematic, you would
> see that the line level signals are sent to an extra stage of
> amplification
> to produce the headphone outputs. So stick with what balances the
> impedance
> see-saw.
>
> Ed²
>
> _____
>
> From: AN1x-list@yahoogroups.com <mailto:AN1x-list%40yahoogroups.com>
> [mailto:AN1x-list@yahoogroups.com
> <mailto:AN1x-list%40yahoogroups.com>] On Behalf
> Of gravkitty
> Sent: Saturday, February 20, 2010 6:48 PM
> To: AN1x-list@yahoogroups.com <mailto:AN1x-list%40yahoogroups.com>
> Subject: [AN1x] (Headphone/LineOuts) Confused as to why...
>
> Official Question 1:
> Why is the headphone output hotter than the actual line outs?
>
> Official Question 2:
> Are there any issues for prolonged use of the headphone outs for recording
> in a home studio scenario? I never push any synth beyond 3/4 max volume.
>
> Is there some, not in the manual, aspect/reasoning behind this? I don't
> understand, it seems to me(IMHO), it should be the reverse. I suppose in a
> live sound application, the line outs would go to an amp/pa which
> would take
> care of the issue. I'm just a guy in the bedroom though.
>
> I'm trying really hard to stay on track with FAWM.org, and I noticed
> something I recorded (using an1x, sh32 and an200) that the AN200 was way
> lighter than it should have been. This caused me to doubt all the
> cables and
> connections, so I rigorously unplugged everything. Found the best cables I
> have and ran thru all the equipment 'outs', all the mixer 'ins', in
> order to
> get a birds eye view on the situation.
>
> I have the AN1X midi out to the AN-200 then SH-32(good combo for a broad
> expansive sound), My Pk-6 is just going straight into the mixer(Yamaha
> MG10/2). The an1x, an200 and sh32 are all going into there own channels.
> >From there, to a recorder.
>
> I gotta say, the action on the AN1X keyboard is so awesome, it gets my
> best
> vote (the Ion gets worst)
>
> Sorry if this is rambling...
>
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