开云体育

(1) With UNTUNE VCOs of lower voice board sound about one octave (1.2 Volts) lower than VCOs of upper board. Are there different default values for lower and upper boards? Same O.S. installed on both boards. (2) DAC OFFSET service routine only works with lower voice board. How to adjust DAC offset on upper voice board? (3) Coding jumper decides which board is "upper", which is "lower". Is it possible simply by way of swapping jumpers to make upper to lower and vice versa? Many thanks for help and insights!

Thanks to all of you that replied to my queries. Great info as always I will take my X to a tech I've been working with, but obviously I have more questions and some info: I go through the tuning routine and all pass.. I turned "off" voices 1 by one under Voice on/off and "thought" v #6 was the culprit. I'm using a Prophet 6 to play the X. When I play (repeating note pattern or one note), I hear each voice get progressively softer until the last of the 6 voices either plays incredibly soft or is not firing. I've tried this on different patches. Could this be pressure or something from the P6 causing the playing note problem on the X? All displays, buttons, midi, powering up and audio appear to be working normally. How would the unit act if caps or chips wouldn't function properly? Sorry guys, I don't mean to appear to cry WOLF. I just want my X to be healthy.' I had a battery change recently and the tech said the unit was clean, but I didn't ask him to check the unit over. ''Guess it's time to find a copy of the Service Manual for this.. Thx again! Rob. Virus-free. www.avg.com

Greetings! So, I figured out I might have a dead voice in my X. Given that I checked to see if the note was turned off or if panning was set strangely. Both were set correctly. Now I notice when repeating a note on my Prophet 6, that the sound on my X decreases as I play. For ex, strongest at first note and softest by 5 time (but I wonder if the 6th note is dead given the fading of each repeated note). Do any of you have any other tests I can try to see if it's just "me" or if my X really has a dead note. Thx.

Someone sent me some great info on how to check my Xpander to see if a voice was switched on/off. I used this method to determine which voice was not firing. After switching voices on/off one at a time, I believe it's the Xpander's voice #6. So, I have contacted Vintage Synth Shop to see if they have any in stock. IN the event that they do not, does ANYONE(??) carry these chips anymore? I mean, this unit is like 40yrs old (bought it new). Would love to replace the voice. Thanks!

HI! I "think" I have a dead voice in my Xpander..?? Asking this group if there's anything else I can check aside from just playing the instrument to make sure? Are replacement voice chips "still" available for this unit? All Tests PASS, so now what do I do? Thanks!

The following files have been uploaded to the Files area of the [email protected] group. Oberheim Xpander Ambient Live Looping By: envia94 <akva@...>

What happened to the Xplorer Editor? http://xplorer-editor.com/ https://youtube.com/user/XplorerEditor http://xplorer.programmer.free.fr/download/latest/XplorerUserManual.pdf

baumont987 <geebeex@...> added folder /Software/Xplorer editor

HI! Been a way from my Xpander for quite some time. I used to use Galaxy Ed/Lib back in the day. Now I have Midi Quest on my PC and want to load some sounds into the Xpander in the last few days. Any tricks? I tried sending some patches to the X, but no luck. Channels correct, used both MidiQuest and Bome to try and send sysex, but again - No Luck. Any help appreciated. Also, am I correct that the Xpander WILL also accept Matrix 12 patches? Yes, I know it's for an Xpander, but I wanted to triple check with all of you with experience. Thanks in advance!

envia94 <akva@...> added folder /Demos/Videos

Hi folks, A few years ago now, soon after I bought it, I got the 120v / 240v thing wrong and the fuse blew. I got a new fuse and everything sounded fine. But I still wonder if it ever sounded better! Is it possible for the voice chips to blow if the fuse went? I note that nothing else went wrong - the CPU or RAM etc - so why the voice chips? My last point is I had it serviced 2 years ago and he said it was fine. Does anyone think it blew the voice chips, or am I just dialing up rubbish patches? Cheers, Jeremy.

I just had a US-made M-12 in for some serious work and took the opportunity to read the firmware EPROMs for the archives - they are now in the files area. CPU board version was MAT1.1 and voice card version was CA1.4, but I upgraded the voice cards to CA1.6 because the unit exhibited the intermittent Voice Processor error messages which John Leimseider told us v1.6 is designed to eliminate (this only applies to rev.D voice cards - see his message in the archives). Another little thing which might help someone in the future: when you engage the DAC OFFSET test in the SERVICE menu, you might expect the M-12 to zero the output of the DACs on both voice cards. Well it doesn't - it only zeroes one of them, according to whether 1-6 or 9-12 is selected on the front panel. The other DAC carries on doing its normal stuff and as a result appears to have a hideous offset problem! I wasted a load of time looking for a fault that didn't exist thanks to that quirk, and can see from previous messages that I am not the only one it has confused. It stems from there being no words in the M-12 service manual, so all knowledge of the test modes comes from the Xpander SM. Hope this helps somebody - cheers, Steve L. Benden Sound Technology

Hello All, I hope this email finds you all in good health and good E-music. I've been putting off recapping the voice circuits in my Xpander for way too long. I believe I've bought all of the caps several years ago from Digikey. They are just sitting in a bag in my Xpander case waiting for a rainy day (week). My wife will be going on a trip next month, so I will have a few weeks where I can leave the Xander out on the dining room table, without causing a problem ;-) For those of you who have recapped the Xander before, I'm wondering if there are any better strategies to use. I do have an original schematic & service manual available, a good multimeter, but no scope. Should I : mark all of the caps in Voice 1, replace them, test Voice 1 before proceeding to the next Voice? Mark all of the caps that serve the same function in each voice and replace them? I was thinking about using an ohmmeter probe on both sides of the PCB to make sure I have the correct cap, then place bright-colored dot stickers on both sides, to make sure I have the right cap, then replace it and continue to the next cap. If I actually finish the voice caps, I might try recapping the power supply too. Are there any other approaches? Thanks Tony

Hi folks, hope all is well with yourselves and your obies? just chiming in to ask a Q.... was playing my 12 yesterday, i left it for about 10 mins to go do something out of the studio and when i came back to it i noticed that it had frozen on me. well partially at least. i power cycled the synth and got a "voice 0 processor malfunction" msg on screen.... now im kinda stuck in multi patch mode (last mode it was in), wont switch to single mode at all for programming, synth still triggers voices and outputs sound , i can also access the tune page and the tuning process runs fine and everything pass's fine, i can switch to the main master menu but cant access any of the available menus or page 2 menus to test ram / vram / leds / voices diagnostics etc - error msg makes sense in that context. i intend to open the synth up later today just to have a quick look and to check connections and ribbons to / from the processor board, i have the synthtaste power supply and the benden displays installed, everything has been brill on the board up until yesterday... so any ideas.....? are we talking replacing ram ic's (6116)'s on the processor board? hoping to not have to test / replace all 16 ram ic's on the board. maybe its just one that's causing the lockouts? voice 0 or A0 is processed by all 16 ram ic's according to the schematics. Any ideas would be gratefully appreciated. keep up the good work - Dave

$74 is a very good price if it's still valid. https://www.perfectcircuit.com/arturia-matrix-12-v-v2.html

I'm not sure if I found this article on Xpantastic or not, but here it is... https://www.perfectcircuit.com/signal/oberheim-matrix-12

Hello Xpansioners! I don't have a Matrix 12 and I'm likely never to have one particular at a price I'd want to pay. Arturia is having a 50% off sale on their flagship VSTs, the Matrix 12V is part of the Analog collection which is on sale. I thought I would buy this if the Matrix 12V could read the Xpander/MAtrix 12 patch files, so I wrote to Arturia support inquiring about that feature. Unfortunately, the Matrix 12V won't read the Matrix12 nor Xpander patch files although it would be trivial to add that support. If Arturia got enough requests to add that feature, who knows they may even decide to add it ;-) Do any of you currently have (or have used) Arturia's Matrix 12V. I'm curious to find out how you like it. I'd also like to get one of the patch files to see if I can decipher the format. I could always try to write my own patch converter. thanks Tony >

The following files have been updated in the Files area of the [email protected] group. * //Pictures/Google Search for Oberheim Xpander Images.jpg ( /g/xpantastic/files//Pictures/Google Search for Oberheim Xpander Images.jpg ) *By:* envia94

The following files have been updated in the Files area of the [email protected] group. //Documents/OBERHEIM_PROMMER_SERVICE_MANUAL.pdf By: Xpantastic! Description: http://www.synfo.nl/servicemanuals/Oberheim/OBERHEIM_PROMMER_SERVICE_MANUAL.pdf

Just found this article: https://www.perfectcircuit.com/signal/oberheim-matrix-12 -geri