I'm only guessing as I don't have access to a service manual. From your descriptions and the tests that you've done, it seems then that everything works normally, filters, VCA's VCO's etc.
All that is wrong is that it doesn't go very loud. This narrows it down a bit I suppose to the volume control or final VCA. There could be a CEM3372 on it's own that's used as a final volume control?.
It says in the user manual I think about hot swapping jacks, but anyway, all I know is that sometimes manufacturers didn't bother to put the correct buffer circuits in that Curtis Electro Music specified or suggested to help protect the CEM chips from damage. I don't know if these protection circuits are in the Matrix 12 but I would guess they are. Because CEM chips are not very common any more I would be wary of hot swapping. It's better to be safe than sorry.
I'm all out of ideas.
Martin
________________________________
From: Loveslap! Recordings <loveslap@gmail.com>
To: oberheim@yahoogroups.com
Sent: Thursday, 18 October 2012, 22:07
Subject: Re: [oberheim] trying to diagnose generall weakness of my matrix 12
Yes.
On Thu, Oct 18, 2012 at 6:06 PM, Martin Ator <cyllall@...> wrote:
>
>If the volume control is set at maximum can you use VCA settings in the programming section to make the sound quieter?
>
>
>
>
>
>________________________________
> From: Loveslap! Recordings <loveslap@...>
>To: oberheim@yahoogroups.com
>Sent: Thursday, 18 October 2012, 21:50
>
>Subject: Re: [oberheim] trying to diagnose generall weakness of my matrix 12
>
>
>
>
>Changing velocity sensitiy didn't help..
>
>
>On Thu, Oct 18, 2012 at 5:03 PM, Martin Ator <cyllall@...m> wrote:
>
>
>>
>>Check if you get any changes by editing velocity sensitivity etc pages 68, 89, 70 of the user manual, also check VCA settings page 115
>>
>>
>>
>>
>>
>>
>>________________________________
>> From: Martin Ator <cyllall@...>
>>To: "oberheim@yahoogroups.com" <oberheim@yahoogroups.com>
>>Sent: Thursday, 18 October 2012, 20:54
>>
>>Subject: Re: [oberheim] trying to diagnose generall weakness of my matrix 12
>>
>>
>>
>>
>>Have you got it set up to control volume using pedals instead? Somethings not quite right. It shouldn't be that quiet. I don't know if the volume is microprocessor controlled? Maybe some parts of the volume control circuitry have gone awry. Is it the same for all patches I take it? Has this been modded for individual output jacks, if so are these working OK?
>>
>>Try not to do any hot swapping. Power down before plugging any jacks in/out.
>>
>>
>>Your Juno works fine with your audio interface? No -10db, 0db, +4dB switches switched to the wrong thin anywhere?
>>
>>
>>The answer could be something simple and because it's passing audio it might not be a very big problem to fix.
>>
>>
>>What's the history of this Matrix 12, was it working fine at one stage?
>>
>>
>>
>>Martin
>>
>>
>>
>>
>>________________________________
>> From: Loveslap! Recordings <loveslap@...>
>>To: oberheim@yahoogroups.com
>>Sent: Thursday, 18 October 2012, 19:48
>>Subject: Re: [oberheim] trying to diagnose generall weakness of my matrix 12
>>
>>
>>
>>I turned the juno way down to match the maximum volume of the matrix.
>>
>>
>>
>>
>>On Thu, Oct 18, 2012 at 1:58 PM, Peter Mörck <peter@...> wrote:
>>
>>
>>>
>>>
>>>Perhaps turning the volume up helps?
:P
>>>I could barely even see the waveforms in Audacity
at normal zoom level.
>>>Is your mixer/soundcard healthy?
>>>Those waveforms look terrible, both the Juno and
the Matrix ones.
>>>Like synced or something...
>>>Turn the volume up and try bypassing any mixers if
there was any.
>>>This recording just seemed strange.
>>>
>>>BR,
>>>Peter
>>>
>>>
>>>----- Original Message -----
>>>>From: Loveslap! Recordings
>>>>To: oberheim@yahoogroups.com
>>>>Sent: Thursday, October 18, 2012 2:54 AM
>>>>Subject: Re: [oberheim] trying to diagnose generall weakness of my matrix 12
>>>>
>>>>
>>>>sanity check:
>>>>http://www.sendspace.com/file/f8slzb
>>>>
>>>>right
channel is Juno106
>>>>left channel is matrix 12
>>>>
>>>>both are single saw
waves (no sub osc on the juno, only one osc used on the matrix)
>>>>filter is
wide open
>>>>resonance is at 0
>>>>all modulation is off
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>On Wed, Oct 17, 2012 at 11:16 AM, Loveslap! Recordings <loveslap@...> wrote:
>>>>
>>>>i will post an audio example for sanity check purposes.
>>>>>
>>>>>
>>>>>
>>>>>On Wed, Oct 17, 2012 at 10:55 AM, Paul Cunningham <paul@...> wrote:
>>>>>
>>>>>
>>>>>>
>>>>>>I find that Oberheims (from the Matrix era) are awesome for complex textures and realtime modulation, and while they do (and should) have a respectable low-end, they are not heavy-handed. You can still get some big lows though using the triangle waveform and a bit of resonance like you said. Most of the sound is in those CEM chips and each Oberheim I've heard sounds unique. I have four Matrix-1000s and each one is a little bit different, but they sound amazing all together.
>>>>>>
>>>>>>
>>>>>>They are unlike other hybrid synths in the sense that there is a little of "play" in the settings and that this, when combined with the modulation matrix, add up to something more like a single board modular synthesizer.
>>>>>>
>>>>>>
>>>>>>I have no idea about the factory programs for the Matrix-12, but a pair of Matrix-1000s playing the same patch, one panned left and the other right, sounds tremendous! It's a subtle thing, but I expect that you can get some amazing imagery using the same approach. -pc
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>On Oct 16, 2012, at 10:58 AM, oberhomie wrote:
>>>>>>
>>>>>>
>>>>>>>Hello
>>>>>>>
>>>>>>>I have a Matrix 12 (Voice 1.4) (Main Software
1.1)
>>>>>>>
>>>>>>>I like it but when I listen to online samples they sound
much better..
>>>>>>>
>>>>>>>Mine seems to lack "balls".. I have no trouble with
any tuning.
>>>>>>>But my low end doesn't seem to be there and many of the
factory presets don't really impress.
>>>>>>>
>>>>>>>Once thing I've noticed is
that when I adjust the VCF resonance, there is a HUGE difference between
62, and 63.. in fact resonance=63 is the only time the synth grows a
pair... 0-62 is wimpy, 63 is burly.
>>>>>>>
>>>>>>>Is this normal?
>>>>>>>
>>>>>>>I
really want to get this thing sounding
good!!!
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>--
>>>>>Loveslap Recordings
>>>>>http://www.loveslap.com
>>>>>
>>>>>Galaxy Group - Ease Back
(w/ BSC and 1200 Warriors Remixes)
>>>>>http://www.traxsource.com/index.php?act=show&fc=tpage&cr=titles&cv=33653&alias=downloads
>>>>>
>>>>
>>>>
>>>>--
>>>>Loveslap Recordings
>>>>http://www.loveslap.com
>>>>
>>>>Galaxy Group - Ease Back (w/
BSC and 1200 Warriors Remixes)
>>>>http://www.traxsource.com/index.php?act=show&fc=tpage&cr=titles&cv=33653&alias=downloads
>>>>
>>
>>
>>--
>>Loveslap Recordings
>>http://www.loveslap.com
>>
>>Galaxy Group - Ease Back (w/ BSC and 1200 Warriors Remixes)
>>http://www.traxsource.com/index.php?act=show&fc=tpage&cr=titles&cv=33653&alias=downloads
>>
>>
>>
>>
>>
>
>
>--
>Loveslap Recordings
>http://www.loveslap.com
>
>Galaxy Group - Ease Back (w/ BSC and 1200 Warriors Remixes)
>http://www.traxsource.com/index.php?act=show&fc=tpage&cr=titles&cv=33653&alias=downloads
>
>
>
--
Loveslap Recordings
http://www.loveslap.com
Galaxy Group - Ease Back (w/ BSC and 1200 Warriors Remixes)
http://www.traxsource.com/index.php?act=show&fc=tpage&cr=titles&cv=33653&alias=downloadsMessage
Re: [oberheim] trying to diagnose generall weakness of my matrix 12
2012-10-18 by Martin Ator