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maybe the computer cable is bad?

could it be messing with the way the z80 talks to the voice boards?

its a standard old school computer cable so you could get another cheap to try.

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From: "mikecarr@sopris.net"
To: Nick Zampiello ; analogue@...
Sent: Wednesday, August 31, 2011 11:33 AM
Subject: Re: [AH] Oberheim DSX question - envelope issue

Thanks Nick,

Both my DSX are pretty stable. The only issue I'm having is when the DSX is turned on and connected to my OBXA. If the DSX is connected but not powered on, then the OBXA behaves normally.

Turn on the DSX and across all patches (or in manual mode) the bottom tray of four voices has both VCA and VCF envelope times cut by about half. So if I have a patch with a sweeping attack on the VCF - the bottom 4 four voices reach their peak in about half the time as the top four voices.

Best,

Mike
--- newallianceeast@... wrote:

From: Nick Zampiello
To: "mikecarr@..." , "oberheim@yahoogroups.com"
Subject: Re: [AH] Oberheim DSX question - envelope issue
Date: Wed, 31 Aug 2011 07:13:44 -0700 (PDT)

i use the dsx w an ob8 and in general it is a quirky setup.

the dsx is actually pretty stable but the ob has always been a little 'crashy'

i think this got worse once i had both.

i haven't noticed VCF VCA sound changes so much as the ob computer gets scrambled and the internal memory with it.

the face of the ob works and the midi / dsx controls work but the sound cards become unreliable....

sometimes it's only one board ( 4 voices ) that is scrambled, sometimes its both ( all 8 voices ) .

????

if you dump the obx patches back in does it work better?

is it literally only when the dsx is on or plugged in and off?

maybe it's confusing the obx computer as some kind of out of cal voltage somewhere?

From: "mikecarr@..."
To: analogue@...
Sent: Wednesday, August 31, 2011 12:33 AM
Subject: [AH] Oberheim DSX question - envelope issue

Hello,

I am running an Oberheim DSX sequencer with my OBX-A and am having a strange problem with the envelope times when the sequeuncer is hooked up to the synth.

The OBX-a works perfectly when the DSX is turned off, but when the DSX is turned on, then the lower board voices (I believe its voices 1-4) have both the VCA and VCF envelop times shortened significantly. So if I play an eight voice chord with a quick decay setting - the 4 voices on the upper board play twice as long as the 4 lower board voices. As I mentioned it affects both VCA and VCF envelope values for all ADSR amounts.

The problem occurs both when playing the keyboard or playing sequences from the DSX.

Any ideas what could be causing this?

Thanks for you help.

Mike

OBERHEIM SYNTH

Re: [AH] Oberheim DSX question - envelope issue

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