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LFO on OB-6 not subtle enough - is this a general issue?

LFO on OB-6 not subtle enough - is this a general issue?
« on: December 11, 2021, 07:22:33 AM »
I purchased my OB-6 in 2018 and I've always felt that it's near impossible to achieve subtle modulations with the LFO. I like a very subtle slow vibrato for example, but when I start turning up the LFO amount it goes from zero to very noticeable much too quickly. Using the mod wheel I can adjust it a little more subtly but I'd like a solution that I can save with the preset.

So I am wondering: Do other users of this synth have the same criticism? Could this be an issue that was present in very early units and has been corrected since? Is this something that Sequential could correct in a future OS update (I am running 1.6.6)?

I'd be glad to hear your thoughts about this.

LPF83

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Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #1 on: December 11, 2021, 09:27:50 AM »
I purchased my OB-6 in 2018 and I've always felt that it's near impossible to achieve subtle modulations with the LFO. I like a very subtle slow vibrato for example, but when I start turning up the LFO amount it goes from zero to very noticeable much too quickly. Using the mod wheel I can adjust it a little more subtly but I'd like a solution that I can save with the preset.

So I am wondering: Do other users of this synth have the same criticism? Could this be an issue that was present in very early units and has been corrected since? Is this something that Sequential could correct in a future OS update (I am running 1.6.6)?

I'd be glad to hear your thoughts about this.

The resulting rate/amounts at a given knob setting are similar between my OB-6 and P6 so I have to assume there is an intentional baseline there... they are definitely very sensitive, so that finding the sweet spot for a very low amount/rate definitely begs for a bit of precision, but I find this to be the case on most hardware synths (results are best achieved using very slight knob tweaks).  I'm able to get subtle/slow vibrato on both synths without issue, but I do tend to prefer using the mod wheel for LFO amount rather than initial amount.

If going for such a subtle amount that it sounds more like a detune "blur" than noticable movement, could you achieve that with the vintage knob function?  It can also be used to take the edge off other modulations a bit, so you can get some nice results using vintage the LFO.
Prophet 10, Prophet 6, OB-6, Prophet 12m, Prophet Rev2-16, Toraiz AS-1, Moog SlimPhatty, Hydrasynth desktop, Korg Minilogue XDm, Roland JP-8080, Roland SPD-30, Roland SPD-SX Special Edition, Roland KT-10, Maschine, Focusrite Scarlett 18i20 3rd Gen + Octopre, Strymon Pedals, Cubase Pro 11.

Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #2 on: December 11, 2021, 12:11:15 PM »
There have been similar discussions here about this but they mostly talk about trying to use the modwheel for subtle modulations. The modwheel range is over the top and you end up using just the first few millimeters of travel when modulating most of the destinations. I don't have issues with the initial amount knob. I can dial in subtle things with no problems there. Thankfully, the aftertouch does have an amount knob, and that can be used for any modulations that really need a limited range.

U-he did a brilliant thing with their Repro 5 (Prophet 5 inspired vst). They added a range limiter to the modwheel that works perfectly to tame the modwheel's reach when needed.

Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #3 on: December 14, 2021, 03:41:34 AM »
I find this to be the case on most hardware synths (results are best achieved using very slight knob tweaks).  I'm able to get subtle/slow vibrato on both synths without issue, but I do tend to prefer using the mod wheel for LFO amount rather than initial amount.

If going for such a subtle amount that it sounds more like a detune "blur" than noticable movement, could you achieve that with the vintage knob function?  It can also be used to take the edge off other modulations a bit, so you can get some nice results using vintage the LFO.

I've owned quite a few analog synths (not anymore though) and I think they are very different in the way the LFO amount works. Some are difficult to dial in, some not. I own a Roland 101 and recently sold a JX3P and I think LFO amount is way more comfortable to dial in on both of them.

I guess I will have to get used to using the mod wheel more for subtle vibratos. The new vintage mode is awesome, I like it much more than the old detune function. But it can't replace the subtle vibrato I am looking for.

Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #4 on: December 14, 2021, 03:45:50 AM »
I am still wondering whether the way the LFO amount knob reacts is something that could be modified with an OS update. Or is the whole LFO circuit completely analog?

kpatz

Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #5 on: December 14, 2021, 09:59:05 AM »
The LFO control is pretty limited on the OB-6, as far as setting modulation depth.  You only have the amount knob and the mod wheel, and both go to wild extremes pretty fast.

An OS update to at least let you tone down the mod wheel depth would be nice to have.  Maybe by holding a button while turning the amount knob.  Having different depths per destination would be nice, too (e.g. hold down F.Freq and turn the amount knob to set depth for filter), but that might be a hardware limitation.

I don't know if or when any more firmware updates will be issued for the P6/OB6 considering they've been out for 5-6 years now, but we could be pleasantly surprised.


Re: LFO on OB-6 not subtle enough - is this a general issue?
« Reply #6 on: December 15, 2021, 06:02:47 AM »
Same feeling.
An OS update would be welcomed !