OBERHEIM SYNTH group photo

Yahoo Groups archive

OBERHEIM SYNTH

Index last updated: 2026-04-28 23:39 UTC

Messages

Browse messages

Page 15 of 51 · 2518 messages matched

Re: [oberheim] Re: Hola

2014-05-09 by zc40@...

if it appears that the voltage rises. V 5.53, I have two built in 4051 on a series of voices only. But the U711, change it and also I have tried another drive

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-05-09 by zc40@...

if it appears that the voltage rises. V 5.53, I have two built in 4051 on a series of voices only. But the U711, change it and also I have tried another drive

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-05-08 by Patrick Edwards

Pull u711 and see if the voltage goes back up. ... -- Patrick Synth Tech @ http://www.switchedonaustin.com

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-05-08 by <zc40@...>

Hello, I have set up all the pin feeds all 4051 (I have actually cut pin 16) and have raised the whole 4053, is out of the motherboard (u710). I ve also

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-05-07 by Patrick Edwards

One thing that I have seen happen before is a CMOS latch-up that pulls down the +5.6 voltage which effectively destroys any voice control. The CEM outputs seem

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-05-07 by Narfman96 - Narfland Studio

I m not sure where TP12 is on the schematic. Check D703 and the two capacitors near it. This circuit generates the 5.6v. It is shown on page 12 of the

Thread view Attachments: 0

Re: Hola

2014-05-07 by <zc40@...>

Hello, now I have another matrix unit that is correct, I ve tried. or 801/3/4/9/10/11/12 and all is well ... The cpu also think it s good. I see a strange

Thread view Attachments: 0

OB-Xa ROM images

2014-05-02 by rob hukin

Hi All, Does anyone have XA rev C ROM images they could send me or post to the Files section, please? thanks, rob.

Thread view Attachments: 0

OB5 schematic diagram

2014-04-27 by <altarkus2000@...>

Hello everyone, Do you know if there is any difference in circuitry between OB32 (squared) and the double manual OB5? Thanks a lot. Regards, Alex

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-22 by Narfman96 - Narfland Studio

I m guessing you injected a signal into the DAC output and got a good loud signal at the output. Good job verifying the analog half of the circuit!!! Does

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-22 by <zc40@...>

Hello, take long to respond. I ve been looking, I saw how it works this part and is in good condition, For the voices, no sound. I have seen all of this is

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-20 by Narfman96 - Narfland Studio

Ok my bad. It is U2. The print must say U2A. A video would be nice. It looks like the output of the 4053 should be pin 13. The input should be pin 14. This is

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-20 by <zc40@...>

otherwise, I find u24, in the area near the top left corne, the U1, U2, U3, U4. but it is true that in the scheme puts u24 can be U2. ? I get confused?

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-20 by <zc40@...>

I ve seen the diagrams, there are many things impossible to see, are sometimes difficult, I have a question, which multiplexes all signals of voices, the pin

Thread view Attachments: 0

Re: [oberheim] Re: Hola

2014-04-20 by Narfman96 - Narfland Studio

Do you have an actual audio signal through the potentiometer? If so work your way towards the output jack. U1, C4, etc. If not you can go back to U24 then the

Thread view Attachments: 0

Re: Hola

2014-04-20 by <zc40@...>

I m sending a signal from ableton a sequence, I played with Vel , but does not affect the output of the matrix, only noises that go in sync with the shot

Thread view Attachments: 0

Re: Hola

2014-04-20 by <zc40@...>

Hello Narfman. I tried regulators, 7912 & 7812. They look good, no voltage drop. The +5 & -5, also looks good. I have an oscilloscope Tetronix & genreador

Thread view Attachments: 0

Re: [oberheim] Hola

2014-04-20 by Narfman96 - Narfland Studio

Welcome to the group!!! Have you tried sending CC 07 with a value of 127 to see if the midi volume is turned down all the way? A reset may cure this also.

Thread view Attachments: 0

Hola

2014-04-20 by <zc40@...>

Hey guys great group, I like a lot. I ask. I have a 1000 matrix recently, The ignition and all good, but the preset does not have sound, some preset sounds,

Thread view Attachments: 0

Oberheim matrix 1000 - missing eprom

2014-04-18 by <justinboohan@...>

Hi All, new to the group here, have a question about my oberheim matrix 1000. I purchased this a few years back on ebay, powered it up and had a quick listen

Thread view Attachments: 0

Re: Faulty Matrix 6r (or faulty user) ?

2014-03-27 by <GOODFELLOWPAT@...>

Hey Guys, Yea, I did some further researching directly after I posted this message... and yep, I figured out the Outputs. The presets it came with from the

Thread view Attachments: 0

Re: Faulty Matrix 6r (or faulty user) ?

2014-03-27 by <wesknick@...>

It s sounds like it s functioning correctly. Welcome the Matrix 6. If you read the manual further you ll learn that output from the right output is only

Thread view Attachments: 0

Faulty Matrix 6r (or faulty user) ?

2014-03-26 by <GOODFELLOWPAT@...>

Hey Group, So I ve just acquired a Matrix 6r. I ve set it up (in Ableton) and it would appear to be only Outputting audio on the Left channel. I ve already set

Thread view Attachments: 0

Re: Oberheim OB-Sx EPROM Data

2014-03-25 by <synthparts@...>

Hi, the OB-SX used old triple-supply 2708s so I can t read them but I have a spare set of working ROMs I can provide you with... Doug synthparts.com

Thread view Attachments: 0

Oberheim OB-Sx EPROM Data

2014-03-20 by Patrick Edwards

Anybody have a working OB-Sx and an eprom burner who is willing to copy and send the data to me? My Sx freezes with the first four patch LEDs lit when it is

Thread view Attachments: 0

RE: [oberheim] tim

2014-03-17 by tim p

Sorry for the spam. This hotmail account of mine has now been recovered from the mailbot that hacked it. ________________________________ From:

Thread view Attachments: 0

tim

2014-03-17 by tim

http://ozbilekhosting.com/rp/xwvaevjd.czpuz

Thread view Attachments: 0

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.