[sdiy] trying to understand appregiators in late 70's synths

Mon Jan 5 01:34:11 CET 2009

somebody mentioned what a train wreck the ax60 arpregiator could be...well for about 4 years back in the late 90's i had a band that performed live electronic music.
live drummer but 5 analog synths, super low end bass guitar,etc....anyway, the ax60 was one of my main synths back then and as much as i enjoyed the ability to save, and the split mode (bi timbral feature was nice), the few songs i used the appregiator on, i had to be really careful to start each note at the exact time or the drummer and I would end up in very different pockets.

i am NOT knocking that synth though. i'd love to see the schematic for this synth. does anyone know what it had for a VCO? the filter was cem i believe (it sounded like it)
impossible to find a schematic or service manual online...

anyway.....

thanks

--------------------------------------------
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> Date: Sun, 4 Jan 2009 15:37:49 -0700
> From: sounddoctorin at imt.net
> To: aym-htnys at teaser.fr
> Subject: Re: [sdiy] trying to understand appregiators in late 70's synths
> CC: synth-diy at dropmix.xs4all.nl
>
> Sorry for not being clear there, but as to top posting it is just
> something that I often do :-). ** (Below if you want to read my
> philosophy on why I deliberately do this in most instances as a courtesy
> to others. Sorry it didn't work out that way in this one..)
>
> Anyway I was talking about Jupiter 4. Like I said I *just* got the
> first Jupiter 6 I've ever had a chance to play with much on my bench.
> The arpeggiator is more like the Polysix it seems in feel. And indeed
> while sure it's on a clock, It's just different in how it interfaces. I
> haven't analyzed exactly what it is they did different. But when I play
> a JP4 it seems to almost...anticipate what I want it to do. And I can
> do really complex things without it doing something that sounds like "Oh
> crud did he hit the wrong set of things THERE!". hehe. Jp6 native
> (without Europa) is pretty good but not as good in that way for me.
> Closer to the way it was done in polysix and mono/poly. I should do a
> recording of the two and let you guys hear what I'm talking about
> probably. I'll play nearly identically as I can a passage on those
> arpeggiators and upload it today if I get a chance. There is already
> a sample of me playing some jp4 arpeggiation on the sounddoctorin.com
> page in the sdstudio section. Hit 'studio map' and then the bank of
> keyboards that is listed below with the jp4 in it. -Bob
>
> ** It frankly annoys me when people do not top post in most cases
> because I have to re-sort through everything to figure out where the new
> part of the post is which is sometimes extensive and sometimes people
> weave things in between stuff and I miss it if I don't look carefully.
> (ie. the logic works like this. I'm a busy guy and assume others are
> too. I can't read every post. I look for things that I'm interested in
> right now. I glance and if it's not something I currently have need to
> read I quickly hit delete and move on. Others want to read that, they
> don't hit delete. Great. We all have different interests no problem.
> So optimally I like to see immediately the latest thing someone said in
> a discussion. Even discussions I wasn't initially interested in *might*
> have something tacked on that I am interested in. But if people bottom
> post I just assume probably not and delete before I even see it often.
> Just because it time averages out to my advantage that way.)
>
> I'm one of those guys who works all the numbers and optimizes everything
> :-). Most conversations are of limited nesting unless people get into
> an argument where they're insulting each other or something and I don't
> give a flying rip about how those things go :-) But when I top post
> it's so that someone can glance and BOOM move onto the next post if it's
> not something they are immediately interested in. Chances are they've
> already seen the stuff below. Why would they want to take even 4
> seconds to maneuver down and find what I said. Multiply that 4 seconds
> by 30 posts a day for a lot of us and that's 2 minutes a day. Multiple
> that by 365 and that's 700 minutes a year and so on.
>
> The only time I recommend NOT top posting is when it's a thing that
> requires some detailed interaction with the text below. I used to like
> the vi editor because it was so quick to do a line by line reply in.
> With the little>> 's instead of the lines that I still don't know how
> to get rid of sometimes. But anyway I probably should have done that
> kind of reply in this case to reduce ambiguity...I dunno.
>
> Andre Majorel wrote:
>
>>On 2009-01-03 20:16 -0700, Bob Weigel wrote:
>>
>>
>>>Doug Terrebonne wrote:
>>>
>>>
>>>
>
>>>>The ultimate arpeggiator is the Europa Jupiter-6. Check out all
>>>>the features here -
>>>>http://www.synthcom.com/Europa/support/EuropaUserGuideV1.0.pdf
>>>>
>>>>I think the earliest synth with an arpeggiator was the
>>>>Jupiter-4 in 1979. Anyone know of one earlier?
>>>>
>>>>
>>>>
>>>It's also one of the best in my opinion :-). Other arpeggiators
>>>you have to hit right on the money or it's train wreck time.
>>>Eg. Akai AX60 eg. Korg poly's etc.
>>>
>>>
>>
>>Because you top-post, when you write "it", it's not clear whether
>>you're referring to the Jupiter-4 or Jupiter-6.
>>
>>How can the output of an arpeggiator be a train wreck ? I thought
>>notes were produced according to the clock, not to when the key
>>was pressed...
>>
>>
>>
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