The Official Sequential/DSI Forum

Key Differences / Similarities between OB-6 and OBXa

Key Differences / Similarities between OB-6 and OBXa
« on: March 16, 2016, 09:11:49 AM »
Hi guys, i've just received my OB-6 and loving it, never owned an Oberheim synth before but always loved the sound of OBxa on some of my favourite records

I'm wondering, what are the key differences between the two? I know this is 6 voice and you could have up to 8 on the OBxa

Also there seems to be a switchable 12/24db filter (2/4 pole) filter on the Xa

There's a modulation knob in the filter section on the Xa, but it looks like we can achieve the same thing in the X Mod section on the OB-6

Thanks!

Ryan

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #1 on: March 17, 2016, 10:15:38 AM »
Hi guys, i've just received my OB-6 and loving it, never owned an Oberheim synth before but always loved the sound of OBxa on some of my favourite records

I'm wondering, what are the key differences between the two? I know this is 6 voice and you could have up to 8 on the OBxa

Also there seems to be a switchable 12/24db filter (2/4 pole) filter on the Xa

There's a modulation knob in the filter section on the Xa, but it looks like we can achieve the same thing in the X Mod section on the OB-6

Thanks!

Ryan

You could also do splits and layers on the OBX and OBXa. That's why I won't go for the OB-6. It's too similar to the Prophet 6 and lacks it's own identity and oddly lacks features that made the OBX models stand out (Splits/Layers/8 Voices). I'd sooner go for a Prophet 08 than an OB-6. The brass/bass sounds are very similar to the OBX.

Prophet 6, Prophet X, Tempest Drum Computer, ISLA S2400 Drum Sampler, Fender American Stratocaster, Roger Linn Adrenalinn iii, ASUS Zenbook Pro Computer, Soundcraft MTK 22 Mixer, Mark Of The Unicorn Digital Performer 10 Software.

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #2 on: March 27, 2016, 08:18:25 AM »
Hi guys, i've just received my OB-6 and loving it, never owned an Oberheim synth before but always loved the sound of OBxa on some of my favourite records

I'm wondering, what are the key differences between the two? I know this is 6 voice and you could have up to 8 on the OBxa

Also there seems to be a switchable 12/24db filter (2/4 pole) filter on the Xa

There's a modulation knob in the filter section on the Xa, but it looks like we can achieve the same thing in the X Mod section on the OB-6

Thanks!

Ryan

You could also do splits and layers on the OBX and OBXa. That's why I won't go for the OB-6. It's too similar to the Prophet 6 and lacks it's own identity and oddly lacks features that made the OBX models stand out (Splits/Layers/8 Voices). I'd sooner go for a Prophet 08 than an OB-6. The brass/bass sounds are very similar to the OBX.


Is there much a big difference in sound with the Obx / Xa using CEM rather than SEM?

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #3 on: March 30, 2016, 08:46:29 AM »
The P08 is great, but it's not a great OB impersonator. Its not meant to be either.

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #4 on: March 30, 2016, 07:24:31 PM »
I've got an OB-Xa on my bench for a tune-up, and my own OB-6 sitting here...
First, in the oscillators: the OB-6 has continuously variable waveshapes, the Xa are switchable.
There's a mixer on the OB-6 - no mixer on the Xa.
There's a sub-oscillator on the OB-6, no such thing on the Xa.
The Xa has 12 or 24dB/oct filters; the OB-6 is 12dB all the way
OB-6 has different filter types (BP and HP, in addition to LP), the Xa is just lowpass
OB-6 has velocity and aftertouch
OB-6 has phrase sequencer
Xa has some different performance options for the levers that the OB-6 doesn't have
Xa has second (mod) LFO that the OB-6 doesn't have
OB-6 has digitally clocked analog oscillators, Xa is all analog. Detune knob set to 40% emulates the Xa's nominal tuning slop just fine.
OB-6 has built-in effects (which are simple but appropriate), none in Xa
Panning is under the hood on the Xa. On the OB-6 there's a pan Spread amount on the front panel, although I haven't gone digging yet to see if there's individual voice pan. There's also a Mono software switch if you want to go old school.
Xa has split/layer, OB-6 does not

Sonically, the OB-6 is certainly capable of playing in the same ballpark as the Xa. In the first half hour in front of the unit I was able to mimic A1 "Jump" and A3 PWM strings very easily, just for shits 'n' giggles.

I've had multiple Xa's and 8's (and still have a 4-voice and an M-12), and for studio use perhaps it'd be nice to have an OB-Xa or 8 around, but the OB-6 more than covers that sound.

YMMV, etc. But that's what I think after a half-hour with the unit. Stay tuned...

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #5 on: May 05, 2016, 05:38:29 PM »
I've got an OB-Xa on my bench for a tune-up, and my own OB-6 sitting here...
First, in the oscillators: the OB-6 has continuously variable waveshapes, the Xa are switchable.
There's a mixer on the OB-6 - no mixer on the Xa.
There's a sub-oscillator on the OB-6, no such thing on the Xa.
The Xa has 12 or 24dB/oct filters; the OB-6 is 12dB all the way
OB-6 has different filter types (BP and HP, in addition to LP), the Xa is just lowpass
OB-6 has velocity and aftertouch
OB-6 has phrase sequencer
Xa has some different performance options for the levers that the OB-6 doesn't have
Xa has second (mod) LFO that the OB-6 doesn't have
OB-6 has digitally clocked analog oscillators, Xa is all analog. Detune knob set to 40% emulates the Xa's nominal tuning slop just fine.
OB-6 has built-in effects (which are simple but appropriate), none in Xa
Panning is under the hood on the Xa. On the OB-6 there's a pan Spread amount on the front panel, although I haven't gone digging yet to see if there's individual voice pan. There's also a Mono software switch if you want to go old school.
Xa has split/layer, OB-6 does not

Sonically, the OB-6 is certainly capable of playing in the same ballpark as the Xa. In the first half hour in front of the unit I was able to mimic A1 "Jump" and A3 PWM strings very easily, just for shits 'n' giggles.

I've had multiple Xa's and 8's (and still have a 4-voice and an M-12), and for studio use perhaps it'd be nice to have an OB-Xa or 8 around, but the OB-6 more than covers that sound.

YMMV, etc. But that's what I think after a half-hour with the unit. Stay tuned...
are you still of the opinion that the Ob-6 can cover most sounds of the Xa? Thanks!


LPF83

  • **
  • 191
Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #7 on: October 18, 2020, 05:41:32 AM »
(video)

Be aware that "Pure Ambient Drone" (while not denying he is a nice guy and I am by no means picking on him here), well... he tends to be a bit of a click-bait factory. 
He's been known to say things like Behringer is rapidly becoming the leader in synthesis, or to post videos labeled as "reviews" of a synth, where he spends most of the time talking about ancillary philosophies that aren't even related to the synth he is supposed to be reviewing.

So, with all due respect to James, his pontification about potential upcoming Oberheim products is based only on the fact that trademarks have been registered in Tom's name, something I pointed out in another post a couple of months ago.

There could be another reason Tom is registering these names.  From a legal perspective, if an entity cannot demonstrate a reasonable attempt to defend a trademark, then they could lose all rights to it.  So it is in Tom's best interest to register the trademarks for these product names, even if only to protect them from being "owned" by Behringer or someone else one day.

Dave has said that the catalyst for the P5 reissue was an e-mail that made him aware that he should do it before someone else does... it seems fairly certain this trickled over into Tom's corner of the world.

That being said, I hope a collab with Tom on a new Oberheim product is the new secret synth Dave and crew are working on!
Prophet 6, OB-6, Prophet Rev2-16, Korg Minilogue XD module, Roland SPD-30, Roland SPD-SX, Roland KT-10, Maschine, Focusrite Scarlett 18i20 3rd Gen + Octopre, Strymon BigSky, Cubase Pro 10.5.

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #8 on: October 18, 2020, 09:07:02 AM »
Yeah, I don't regard him as a reliable source, but as a curiosity.  I thought it still would be of interest to the forum, though.  Maybe it's true, but maybe it isn't.  That's just the nature of this gigantic crap shoot called the Internet.
« Last Edit: October 18, 2020, 09:54:57 AM by Sacred Synthesis »
The Musical Synthesizer YouTube Channel:
https://www.youtube.com/channel/UChLGwGiRVs7rlZXnOG9_mUw

The Musical Synthesizer Blog: https://themusicalsynthesizer.wordpress.co

Jonas

Re: Key Differences / Similarities between OB-6 and OBXa
« Reply #9 on: October 19, 2020, 05:08:13 PM »
(video)

Dave has said that the catalyst for the P5 reissue was an e-mail that made him aware that he should do it before someone else does... it seems fairly certain this trickled over into Tom's corner of the world.

That being said, I hope a collab with Tom on a new Oberheim product is the new secret synth Dave and crew are working on!

I hope for that as well.  It appears that many people had a horrible experience with purchasing a Two Voice Pro and those who acquired one didn't get much operational help or tech support afterwards. So yeah, if Tom does do a collaboration with Sequential to get a new instrument released (hopefully an OB-Xa), it would give us all the reassurance needed for making a reliable purchase, knowing that there are enough units available, and also the comfort knowing that you'd have an amazing company and tech support there to back it up. A reissue of an OB-Xa from Oberheim would have such a huge demand that I feel there'd need to be a bigger player involved to help keep up with it all.

I hope Dave forwarded that e-mail over to Tom. The recent trademark registration for the OB-Xa appears to have awakened a fascination in me that I finally put to rest years ago, with the hope of a modern reissue of the original unit from Tom Oberheim.  ...and it's got me hounding forums and falling for click-baity videos about the subject. It's so annoying that I let myself all worked up with no solid information out there, but I'm just so charmed and enchanted by the whole idea. The best way to calm myself down about it all is to go have a session in the studio to remind myself and relax in the knowledge that I'm perfectly happy and content with my OB-6 and my other DSI / Sequential items.
« Last Edit: October 19, 2020, 05:12:14 PM by Jonas »
DSI/Pioneer: |Tempest|PRO 2|PRO '08|OB-6|MonoEvolverKeys|MophoKeys|Toraiz AS-1|SP-16|
Oberheim: |DMX|DPX-1|Matrix 1000|