OB-X, Oberheim @ 07 February 2017, Comments Off

obx ” I’m relisting my OB-X. For those who were watching it: I had it listed last week, but after a couple of days, I got cold feet about selling it and had retracted the listing early as I wanted to sleep over it some more in order to decide whether I really want to sell it or not and needed to come to terms that if I sell it, chances are slim to none of me ever owning an OB-X again. However, after careful thought, I’ve decided to sell it after all..(sniff). So, here it goes again:

This 8-voice OB-X powers up, but outputs only weird and static sounds and seems to freeze up on default sound upon power-up.

I purchased this OB-X last October, basically as a non-working unit, i.e. it was only outputting a ground hum type sound. I had it serviced just over a month ago in mid-December by a local tech in San Diego, CA in order to “bring it back to life” and paid $842 for it (see image of invoice). The tech identified and repaired a short, which apparently was due to corrosion from mouse urine, recapped the power supply, rebuilt/recapped the voice cards and swapped their trimmers out with the multi-turn kind, installed new key bushings and then fully calibrated it. When I picked it up from the tech, it worked. But only about 3 short days later, the synth started to freeze up, only seconds after powering it up and became stuck on the default sound, meaning it was non-responsive to any further preset key selections or attempts to edit it. When I contacted the tech 3 days later to report what was happening and to ask if he could take another look at it, he told me over the phone that this must be a new issue and likely not related to the work he’d already done on it and needed to open another ticket for it, thus incurring further repair costs. Unfortunately, I don’t have the time, money, and energy to keep this going and decided to sell it as-is. ” Link

OB-X, Oberheim @ 03 January 2017, Comments Off

ob-x “I have had this fully overhauled a few years ago, it has a very fast tune up time and of course it sounds fantastic. I’ve programmed some great sounds worth keeping, it’s very lush and big sounding and crazy sounding that can be very interesting and very out if you like those Sci fi sounds from that era. It has X mod on that’s rare on synths from this time and when in unison mode thats like thunder and lighting crashing down. It has 2 VCOs, LFO with sine, square and S and H wave forms with a extra high and low pass filter.” Link

OB-X, Oberheim @ 20 December 2016, Comments Off

obx ” Up for sale is an 8 voice Oberheim Obx with a 4 pole filter mod in place of the noise. It is in good condition having some tape residue left from where the logo “OBX” (on top) and “Oberheim” (back) were taped for a gig, at some point it was subjected to heat because a few of the upper octave black keys have apparently melted some. I am the second owner having bought it from a man named Virgil Weber who bought it new and used it in a Lake Tahoe show for Laura Brannigan. It also comes with an anvil case, and although the case has no padding inside, it reads the words “Obx Laura Branningan” therefore confirming the fact that it was in fact used in the show. This keyboard functions as it should and has been more stable than the OB8 I used to have! ” Link

OB-X, Oberheim @ 15 November 2016, Comments Off

ob-x “Classic Oberheim OBX 8 voice polyphonic polysynth in good condition and fully working.

I have had this fully overhauled a few years ago, it has a very fast tune up time and of course it sounds brilliant. I’ve programmed some great sounds I’m sure you won’t want to write over, very lush and fat sounding and crazy sounding. It has X mod on that’s rare on synths from this time.

Used by bands such as Kool and the gang, Queen and Killing Joke. I’ve used it a lot on recordings over then last 3 years and it really does stand out as something special.” Link

OB-X, Oberheim @ 25 October 2016, Comments Off

obnx “Powers on and lights up as pictured- has not been tested beyond this. Sold for parts- as is. Sides are missing (as pictured). The 8 button is broken (as pictured). Has wear from usage over years (as pictured). Comes with power cable.” Link

OB-X, Oberheim @ 20 September 2016, Comments Off

obie-x “Rare Oberheim OB-X Vintage Analog Synthesizer for Sale

This OB-X is the 4-voice model in top condition and with very minor wear given its age. This synth sounds fantastic, everything works as it should and is very stable. I had it serviced about 2 years ago by a former Oberheim employee. Service included recapping of the power supply, replacing OS chips, renew some of the old cables, and adding new key bushings. I also had him retrofit it with the ElectronGate MIDI kit.

The Oberheim OB-X is the rarest of the entire OB-series and touted by many (including Tom Oberheim himself) as the best sounding model of the OB series, which is due to its all discrete components (except for the envelopes, for which it uses CEM3310 chips) and the SEM-based design used in the earlier Oberheim Two- and Four Voice synths. Only 800 Oberheim OB-Xs were manufactured and it is estimated that an even smaller number of them are alive today in fully working condition.” Link

OB-X, Oberheim @ 27 October 2015, Comments Off

ob-x” This OB-X is in excellent condition and works 100%. It was recently totally overhauled by one of the best Oberheim techs in the country (see above for full service details). The synth is incredibly stable and is fully in tune almost immediately after auto-tuning. This also has the very cool Encore MIDI kit which provides midi CC control over ALL parameters. Sounds HUGE in a way that is still unmatched in the synth world. Comes with a custom hardcase.

If you were looking for an OB-X that is ready to go, THIS is the one!

N.B. Due to this being a piece of vintage (and sensitive) electronic equipment, no returns will be accepted. I am happy to work out local pickup should the buyer desire to do so. Otherwise, the synth will be well-packed in a hardcase inside a padded box. The extra chassis will come in a separate well-padded box.” Link

OB-X, Oberheim @ 29 September 2015, Comments Off

obi-obx “This OB-X is in excellent condition and works 100%. It was recently totally overhauled by one of the best Oberheim techs in the country (see above for full service details). The synth is incredibly stable and is fully in tune almost immediately after auto-tuning. This also has the very cool Encore MIDI kit which provides midi CC control over ALL parameters. Sounds HUGE in a way that is still unmatched in the synth world.

Comes with a custom hardcase, AND, in addition to the main unit, the buyer will get an extra OB-X chassis carcass to use for spares (includes all panel hardware, no internal hardware). The chassis itself is worth quite a bit but you’ll get it for free!” Link

OB-X, Oberheim @ 22 September 2015, Comments Off

obiex

This is one of the first ones made, with a serial number from 1979 and the earlier “block font” logo rather than the later “cursive” one. The serial number label also shows it was built as, and still is, a four voice model. I bought this synth in 2010 from Tonetweakers in the USA, who fully restored it before shipping it to the UK. I then took it to Kenton Electronics, who fitted a MIDI retrofit that allows the synth to both transmit and receive MIDI. As part of the restoration, the keyboard bushings were replaced so the keys are level (I’ve included a shot looking straight on at the keyboard to show this).

The synth has spent the last five years in my little home studio and has never been gigged, and it can be heard on a number of tracks on my Soundcloud page. This is the same kind of synth used by the likes of Japan and Killing Joke – it provides the amazing sounds on Killing Joke’s “Night Time” album, including the legendary track “Love Like Blood”. I really don’t want to part with this synth, but I need to pay for work on my money pit of a car! I’d prefer payment by bank transfer and collection so that the buyer can test the synth, but will accept PayPal and ship at the buyer’s expense. Message me with your location for a shipping quote, and I can also provide measurements and weight if you’d like to get shipping quotes yourself.

In addition to the synth itself, I can provide a power lead and a good quality printout of the original manual. I also have a WAV file of the factory patches that can be loaded into the synth using a computer or mobile phone connected to the cassette sockets.” Link

OB-X, Oberheim @ 18 August 2015, Comments Off

Oberheim OB-X “The synth has spent the last five years in my little home studio and has never been gigged, and it can be heard on a number of tracks on my Soundcloud page. This is the same kind of synth used by the likes of Japan and Killing Joke – it provides the amazing sounds on Killing Joke’s “Night Time” album, including the legendary track “Love Like Blood”. I really don’t want to part with this synth, but I need to pay for work on my money pit of a car! I’d prefer payment by bank transfer and collection so that the buyer can test the synth, but will accept PayPal and ship at the buyer’s expense. ” Link

OB-X, Oberheim @ 12 August 2014, Comments Off

“For sale is a vintage Oberheim OB-X 8 voice analog synthesizer. It was originally released in 1979 and was made to compete with the Sequential Circuits Prophet-5. This one is in great condition for a ~34 year old synth. Everything on it works and it sounds amazing. I just cleaned the bus bar and double checked all of the controls. It does have a couple of minor issues. Two of the voice cards don’t hold tune between power cycles, but the auto tune function works flawlessly and only takes a few seconds. The other issue is that the rubber pads under the keys are starting to deteriorate, so they stick to the bottom of the key stops if it doesn’t get played for a while. As you can see it has a number of scratches on the bottom and a couple on the top, but overall it looks really good. ” Link

OB-X, Oberheim @ 03 June 2014, Comments Off

“For Sale :

1979 Oberheim OB-X Analog Polyphonic Synthesizer. SN # 794404.

Details : 8 Voice Model w/ Encore MIDI. (was originally a 4 voice)

Completely refurbished in 08/13. The following services were performed :

1) Unit completely stripped and cleaned inside and out with all pots and switched cleaned.
2) Bushing pots leveled, new bushings installed and fitted.
3) Buss Bars removed and cleaned, key contacts cleaned.
4) Power supply re-capped & Batteries replaced
5) All Tantalum caps replaced on power circuitry replaced w/ new ones.
6) All electrolytic caps replaced.
7) All functions tested, and passed burn in test.

All work was performed by This Old Synth.

Notes :

This is a very clean, working example of an original OB-X with MIDI. The cosmetic condition is an easy 9.5/10, and it will come with a very heavy duty Anvil Case, that has been re-foamed recently. The Encore MIDI works flawlessly, and allows you to store up to 100 presets (as opposed to original 32).” Link

OB-X, Oberheim @ 04 March 2014, Comments Off

“Oberheim OB-X with whole extra chassis
Non-midi
Great condition – recapped power supply
8 voice cards (7 working – 1 worked until very recently – probably needs cap replacement)
Keybed rebuilt but could use some adjustment / cleaning.
Includes spare cem 3010 asdr chip for voicecard” Link

OB-X, Oberheim @ 07 January 2014, Comments Off

“Condition: Good and fully functional. Auto tune runs successfully. All knobs, switches and keys are working. MIDI IN configured to channel 9. As you can see on picture #7, this OB-X was factory delivered with 6-voices and has been upgraded to 8-voices as you can see on picture #12.

Service History: Restored and serviced on 12/13/2012 by The Analog Lab, NYC http://www.theanaloglab.com/. The restoration process includes at least (See enclosed pictures for details):

- Molex connectors replaced

- Trimmer replaced

- CMOS replaced

- Tantalum caps replaced

- PS re-capped

- Pots / Switches cleaned

- Full calibration

- All key contacts cleaned and regulated” Link

OB-X, Oberheim @ 17 December 2013, Comments Off

“VINTAGE OBERHEIM OB-X SYNTHESIZER KEYBOARD AND FLIGHT CASE” Link

OB-X, Oberheim @ 12 November 2013, Comments Off

“AN OBERHEIM OB-X FOUR VOICE SYNTH. LISTED FOR PARTS OR NOT WORKING BECAUSE IT WILL POWER UP ABOUT ONE IN TEN TIMES YOU TURN IT ON .I TOOK IT OUT OF IT’S CASE AFTER SITTING FOR 15 YEARS AND SOME OF THE CAPACITORS WERE BAD ON THE VOICE CARDS.A LOCAL TECH REPLACED THEM,BUT IT STILL HAS THE INTERMITTENT POWER UP.IT’S PROBABLY A EASY FIX AS IT WAS WORKING WHEN PUT INTO STORAGE.A RARE AND IN DEMAND KEYBOARD-LESS THAT 1000 WERE MADE.THE KEYBED HAS SOME UNEVEN KEYS AND IT SHOWS THE COSMETIC WEAR FROM MANY YEARS ON THE ROAD IN THE 80S’.SHIP TO THE US ONLY.PAYPAL ONLY.IT WILL BE PACKED BY THTE UPS STORE.THIS IS A HEAVY ITEM AND I WILL HAVE TO CHARGE PACKING CHARGES.LOCAL PICKUP WELCOME IN SO. CAL.” Link

OB-X, Oberheim @ 30 July 2013, Comments Off

“Classic Oberheim OBX with JL cooper MIDI

Works
Cosmetic Blemishes” Link

OB-X, Oberheim @ 18 June 2013, Comments Off

“This is a very very rare synthesizer in excellent working condition.
It is a 6 voice Oberheim OB-X. It is a museum piece because it has the famous JL Cooper designed and manufactured modifications on all 6 voice boards. Super rare and useful modification.
It was serviced and repaired by JL, a former Oberheim employee who was their number one technician. I received it back from JL about 1.5 years ago. It has been used only three days since then.” Link

OB-X, Oberheim @ 07 May 2013, Comments Off

“Oberheim OB-X 1979 in 1980s chassis – 1979 original chassis included
Non-midi
Great condition – recapped power supply
8 voice cards (7 working – 1 worked until very recently – probably needs cap replacement)
Keybed rebuilt but could use some adjustment / cleaning.

Plays great after 15min warm-up” Link

OB-X, Oberheim @ 23 April 2013, Comments Off

“This is a very very rare synthesizer in excellent working condition. It is a museum piece.
It is a 6 voice Oberheim OB-X. It has the famous JL Cooper designed and manufactured modifications on all 6 voice boards.
It was serviced and repaired by JL, a former Oberheim employee who was their number one technician. I received it back from JL about 1.5 years ago. It has been used only three days since then.” Link

OB-X, Oberheim @ 13 November 2012, Comments Off


This OB-X is in near perfect condition. It has NOT been in a storage unit and shows NO signs of rust

(tip: always look at the rear screws and jack washers for signs of rust on old synths)

It has been in the Mad Science Lab for 16 years and used by the group Silicon Breakdown on many songs. The second photo on this page shows the studio where it’s home has been. (http://www.siliconbreakdown.com/madscience.html)

I bought the OB-X from the Starving Musician store in San Jose in 1996. The tag on the back says 8 voice, but it is a 4 voice, I assumed they used the other voice cards to fix other Oberheims. Check out sound examples to see how fat 4 voices can be.

The wood panels and screws and jacks are all original, yet they look almost new. It has never left the studio except to be tuned. The front panel graphics are perfect. The tech mentioned the D key near the word Programmer had been repaired at some point, but the key plays, it is just goes down about 1/8th of inch less then the other keys and feels more squishy then the other keys. It is not visible till you know it’s there, and it’s not visible in these pictures. I did not know about the key until he tore the keyboard apart to replace the key bushings. There is one large scratch on the back of the unit near the MIDI jack, which is clearly visible in the pictures.

MIDI

This OB-X has the Encore Electronics MIDI kit installed.

http://www.encoreelectronics.com/cont_obxmk.html

This kit allows for MIDI notes as well as midi control of the filter cutoff, resonance and many other controls. It also increases the patch storage from just 32 to 120. And you can save the presets over MIDI so no more messing with tapes. I had the Kenton MIDI kit initially but the Encore Electronics kit is much better. The Oberheim OB-X never had MIDI when produced, and you do not want to deal with a special sequencer DSX hookup to control an OB-X. You need MIDI so you can control the OB-X from a computer sequencer, or a midi keyboard that has controllers to route to the many MIDI controllers on the OB-X Encore kit.” Link

OB-X, Oberheim @ 23 October 2012, Comments Off

“This listing is for a Oberheim OB-X.
The unit is in excellent cosmetic and 100% operational condition.
It was just fully serviced, calibrated, cleaned and tuned.
The item will be professionally packed and shipped.” Link

OB-X, Oberheim @ 14 February 2012, Comments Off

“Zum Verkauf kommt hier ein seltener Oberheim OBX 6 Voice

Der Oberheim OBX zählt wohl zu den interessantesten Synthesizern der Firma Oberheim.

Der Sound des OBX ist sehr warm, breit und organisch, ähnlich dem Oberheim SEM System.

Das zum Verkauf stehende Instrument wurde vom Vorbesitzer überholt und viele der typischen Oberheim OBX Krankheiten (instabiles Tuning etc.) wurden behoben.

Die meisten der alten Kondensatoren, Trimmer und Molex Steckern wurden getauscht und überarbeitet.

Weiter wurde auch ein Encore Midi Upgrade (In, Out, Thru) installiert. Dieses Kit ist nicht mehr vom Hersteller erhältlich.

Der Synthesizer befindet sich in einem guten Zustand, technisch absolut einwandfrei. Bitte beachten Sie die Bilder unten.

Lediglich an den seitlichen Holzleisten sind leichte, altersbedingte Gebrauchsspuren zu finden.

Einziges Manko: Der Pitchbender hat einen “Dead-Spot”, ein Problem, welches gerne bei frühen OBX auftaucht.

Da dies ein Verkauf im Kundenauftrag ist können wir keine reguläre Gewährleistung geben.

Das Gerät ist auf Betrieb mit 220V ausgelegt.

Der OBX wird gut verpackt und wird inklusive einem Kaltgerätekabel geliefert.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 09 August 2011, Comments Off

“Originally a 6 voice but over the years I added the extra 2 voices. It was also recently tuned up by Technician Larry who gave it a clean bill of health. Not only is this thing in great functional shape but it is in pretty awesome cosmetic shape as well. I would give it an 8 out of 10 since there’s typical rash on the bottom and few very minor nicks. Most of my friends flip-out when they see it being so clean, but remember it isn’t perfect but you will not be disappointed. I tend to under-grade my items so everyone is happy without misrepresenting. Nothing is worst than buying something broken and/or misrepresented.

It comes with a flight case but the foam has disintegrated over the years so I removed it. There’s still residue but the buyer will have to have it refoamed. The synth will be packed well inside the case and then boxed. Buyer pays actual packing and shipping charges which will not be cheap! Email me for a shipping quote.

As all synthesizer enthusiasts know that these things are delicate and I would recommend having it looked over by a competent tech after its journey to wherever.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 03 August 2010, Comments Off

“die meisten werden wissen worum es sich handelt . erspare mir deswegen die litanei der technischen daten.
studio synth in gutem zustand . 2 tasten zeigen leicht nach oben. die kiste hat midi in, out, thru. leider nur 4 stimmig.
einer der fettesten synth und ich hatte eine menge spass damit.
wurde 2009 oder 2008 bei extended in berlin generalüberholt. kontakte gereinigt etc etc….

schwere kiste . abholung wäre toll. wenns nicht geht kann ich auch versenden. ” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 13 July 2010, Comments Off

“Hi, you’re looking at a beautiful and very rare, 1979 Oberheim OB-X Eight-Voice polyphonic synthesiser. It is fully serviced, re-capped and factory calibrated with a new memory battery fitted. It sounds absolutely stunning. The OB-X sounds far superior to the later OB8 or OBXa. Why? Because unlike the OBXa and OB8, the OB-X voice circuits are based on the legendary discrete Oberheim SEM module. The OBXa and OB8 are Curtis IC based designs. The OB-X filters, VCO’s and VCA’s are fully discrete just like the SEM module.

This is a true OB-X 8-voice(ie not a modified 4 Voice) from factory! See model number picture.

I can honestly say I don’t think I have heard any better analogue strings or pads from a synthesizer, and I’ve owned nearly every vintage anlogue synth going. The sound is ridiculously organic and rich.

The Oberheim OB-X is a rare beast let alone in this saught after 8 voice configuration. The only reason I am selling is because I actually own two and I need to free up some studio space!

Superb physical condition, manual included. Fully working and professionally serviced.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 22 December 2009, Comments Off

obx Relisted with more info.


“OK, Take Two! This is a no reserve auction. Up for auction is one Oberheim OB-X Analog Synthesizer, serial number 794102. This is an 8 voice unit as can be seen in the photos, 4 voice cards with 2 voices each. This unit has seen better days. I acquired this synth during the summer of 2000 and it was not working then, but it did power up. I put the OB-X in storage for 9 years in a shed in my backyard with the intention of fixing it someday, then I got into acoustic music and that day never came. I had a Roland JUNO 60 for my synthesizer fix in the meantime. Unfortunately, I neglected to cover the unit while it was in storage and a mouse took up residence inside it. Our little friend made a nest of straw, bits of fabric and plastic directly on top of what I now know to be the control board. Apparently, mice don’t mind nesting amongst their own feces and urine because the control board surface was coated with both. I took some photos of the control board and you can see that some ICs and solder trails are thoroughly corroded, I believe the control board is beyond repair, but I could be wrong, maybe it could be stripped and redone, all the parts are there. The good news is that the mouse didn’t crap on the CPU which is mounted above the control board, so it looks ok as well as all 4 of the voice cards, it was just too cramped for our industrious pal to get in that area. You can see in the close up of one of the voice cards that there is no corrosion and it’s fairly clean. You can also see that some of the spring clips where the wire harness plugs into the voice cards are missing, I’m not sure if they weren’t there to begin with or if I lost them when I removed the cards for cleaning. The voice cards are the “A” version without the built in LED, but apparently you can get a kit to install your own LEDs on the cards. I’ve learned a lot about this synthesizer, mice and how to properly long term store things over the last week. One other thing is that the “HOLD” button is missing, you can see that in a photo as well, but the LED is there. Everything else is all here, the power supply, the wire harnesses, the keyboard, the wooden side panels, the voice cards, the mother board, the control board, all of the pots, the heat sinks, so there’s plenty of parts here for restoration.
I sincerely appreciate the eBayer who pointed out that I had been misinformed because they were right, I had been! I apologize for promulgating misinformation, the truth is that there is one voice per card on the OB-X and as you can see in the photo I just posted, this unit has 8 voice cards, 1 – 4 on the bottom and 5 – 8 on the top. From going back in there, I can tell you two more things, the first that this is a true piece of American craftsmanship and ingenuity, my hat is off to Tom Oberheim. But all of you “watchers” already know that. I love the hinged posts that mount the circuit boards. Second, this thing seriously smells bad. I don’t know how that mouse could stand living in there. Maybe there was a whole family and there must have been because mice are not solitary creatures, if you find one, there will be several more to follow. As I said before, Tom Sawyer turned out to be a mouse, so although I have been able to remove most of the organic debris, I’m sure that some will remain for the lucky winner of the auction.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 15 December 2009, Comments Off

obxvoice “This Voice Card has been tested in an Oberheim OB-X and is in excellent working condition, this is a newer card with the LED built in , pass all tuning test.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 15 December 2009, Comments Off

!BhkZUn!BWk~$(KGrHqMOKi8ErzCnIedIBLJt7!Z8sQ~~_35 “This is a vintage Oberheim OB-X built in California. This synth is not in working order, but everything is here. I’m not sure what is wrong with it, but maybe you could fix it.” Auction ended. Click here to browse on eBay.

OB-X, Oberheim @ 23 June 2009, Comments Off

“You are bidding on a classic Oberheim synthesizer produced in 1979* It is a 6 voice model and has Oct. 1980/81 dates printed on the voice cards. I bought this a few years ago with the intent of getting it fixed, but have decided to let it go to a new home. I purchased this synth along with a few others, and this one was not working when I bought it. It did power up but will blow the fuse every time upon powering on. This synth is being sold in non-working “as-is” condition/project or for parts. The body has some scratches and rust in places. All keys feels good, knobs feels smooth, and all buttons “click” when pressed but again no output from this one, as-is with no returns. This synth is complete, with no missing parts (besides a few screws), so this is a great chance to pick one of these up for cheap! ” Auction ended. Click here to browse on eBay.