Oberheim OB-X

Oberheim OB-X

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OB-X, Analog Synth from Oberheim.

2 user reviews
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Oberheim OB-X tech. sheet

  • Manufacturer: Oberheim
  • Model: OB-X
  • Category: Analog Synths
  • Added in our database on: 08/27/2005

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Oberheim OB-X user reviews

Average Score:4.7( 4.7/5 based on 2 reviews )
 1 user review50 %
 1 user review50 %

Vco123's review (This content has been automatically translated from French)" superlative sound!"

Oberheim OB-X
32 to 128 expanses memories with Encore Midi


control surface aerated and very pleasant: knobs and buttons very spaces, a = a function button, no submenus
the OBX is a relatively simple synth with possibilities, noble descendant of elephants white, SEM and other modules 2 or 4 channels, no need for manual user


Ah sound OBX!
see youtube videos of RetroSound example referred to as the "memories"
is there another poly analog world that sounds as good?
the sound is crystalline in acute round in serious ... a great harmonic texture and lively, pure analog juice thanks to the virtual absence of chips on the sound card. apart envelopes, everything is discrete
s added to this texture slight detuning of each channel stereo and distribution of each of them on the pan

connect an OBX on a high quality audio system, start with a sawtooth wave simple, a chord on the keyboard, press a little vibrato and the magic is already the

PWM is also the beauty of the whole, as well as polyphonic portamento

the bass sound like timpani, while the treble you tear a tear of emotion ...

this sound great due to the OBX device research by demanding ears. it nya beson of no effect, the sound is raw, massive living

its only small defect: a little slow envelopes


I use it for 3 years and am still blown away by the fantastic sound every time that I have the pleasure of light! a device that I will never sell and no possible comparison with his cousins ​​teams curtis chips, ssm or roland
it is simple, but what he does, he does better than others!

regarding the reliability, an upgrade was made full (trimmmers change, the condo tantalum, selector channels) for 3 years and no problem!

Anonymous 's review (This content has been automatically translated from French)

Oberheim OB-X
The OB-X is the first programmable polyphonic synth with memory and Oberheim. The TVS, EVS and FVS n'tant not really programmable same fashion ... Before him there was only the Prophet V (released in 1978) which proposed cell. The OB-X is not really a competitor to the Prophet V Contents of possibilities, modulations. Say it now, the OB-X is not a machine made for sound research. He was so available in 4, 6 and 8 voices (such as OB-Xa). Each voice has two VCOs available with waveforms and PWM saw available. A low pass filter 12 dB / oct, 2 envelopes, an LFO with adjustable sine, sawtooth and S / H. With the same modulation matrix which is found two years later on the OB-Xa. There is a gnrateur white noise, we can just choose a rate of 100% or 50%. Same for the volume of VCO 2. It's full, half or nothing. This shows many limitations dj Contents programming. There are 32 Memoirs in the OB-X, memory speeds are very very satisfied. Note that adding the kit noon Encore Electronics provides an evolution of 88 places of memory as well (ie 120 in total)

It is equipped with an original 5 octave keyboard Pratt & Read, which tends to age badly. A change against a membrane keyboard Panasonic makes the greater good ... nice thing is, it s owner connections CV / Gate to the voice card No. 1. Thus allowing to drive through what nimporte squenceur analog. Almost an OB-1 plus limit (without the sub osciliateur or multi-mode filter). The stereo outputs are also a big plus, with the possibility of panning left and right voices in the sound space, allowing a very powerful stereo effect.

There is also a cassette interface, but the quality leaves a little desires.

Its reliability is legendary prove more; find an OB-X is currently running in perfect condition is almost find a pice of currency in a haystack. It's very very rare ...


L there is not much to criticize. It is really very simple to use. The knobs and buttons are very space. It s a real pleasure to program this synth. No need for manual. Everything is done Manir intuitive. The 32 memory space is a bit limited, but we must not forget that in 1979 c'tait dj very nice to have a programmable polyphonic synth with Memoirs ...


The strong point of this synth ... As the architecture of its cards is almost similar to the famous SEM of a brand, thus almost an electronic Entirely discrete, the sound is very very close White Elephants! There is just the envelopes were seen filled chips Curtis 3310. It's missing is the multi-mode filter and the illusion is perfect (a change that is very easily doable).
I would rate the sound very clear, very presents, liquid, organic. An OB-Xa sound darker, availing oneself less of claret at the top and bottom of the spectrum. No need to add a multi-purpose APRS an OB-X, it sounds incredibly broad, certainly also the tuning of its voice-cards that are not always perfect, despite the prcieuse using the Auto Tune.
The sheets are beautiful, very sweet, deep and warm. Leads are ultra presents. Bass, without being aggressive and Scheer have a monster PCHE. The filter achieves brass sounds superb. Forget cons by the effects of sick, almost an FM Jupiter 6, etc. ... It's really big sound amricain, that only he or Four-/-Eight Voices to arrive.


I availing oneself for 3 years. And he does for 3 years down. Besides, it is still not in perfect condition ... self-tune a few problem. If there was no such eternal problem of reliability (condos, trim-pots, etc. ...), brief the poor quality of construction so typical of polys amricains (a Prophet V c is even worse ...), I recommend it warmly.

I recommend it more to lovers of his Oberheim, those who know someone who can help will repair if there is a problem, or those who have a big budget to maintain it.

It is relatively simple, but it sounds like a big truck. And is the point I like most. A bit like my Juno 60 actually ...

Oberheim OB-X images

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Oberheim OB-X videos

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Oberheim OB-X manuals and other files

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Other names: ob x, obx

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