Synth-Werk 901A/BBB: tuning thoughts

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Sir Ruff
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Post by Sir Ruff » Wed Jun 19, 2019 9:37 am

josaka wrote:those low pass gates are really good at the buchla bongo type sounds.. but not a lot else.. :) the journeyman high pass can do a pretty good buchla bongo + a load of other hp and lp stuff its great for targeting low harmonics and creating huge subs (..I think korgs are my favourite filters!(I have 4.. 5 if you count the korgasmatron as 2!).. that 80s electro sound is pure korg..). good move.. :tu:

korg poly 61 filter same filter as delta and a few others from then.
rad. sadly Krisp1 are actually out of them so my Korg filter fun will have to wait.

I didn't quite realize that the P-61 used the same filter as the Delta--I've always been really curious about the latter tho the price is usually just a smidge too high to justify.
johny_gtr wrote:It looks like a hardware limitation because I have the same.
Kenton Pro Solo helps a lot with scale parameter (i have mine with value of -14 or +14).
After this configuration, about 4 octaves are in tune.
thanks for confirming, that's good to know. I'm at +18 over here.

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Post by robotmakers » Fri Jun 21, 2019 12:54 pm

noddyspuncture wrote:I've also have added a small modification to each which means I can compensate for any 'scale' drift, from the front panel - which I have to do a few times during a live set. I get 5 octaves in tune no problem if I keep on top of it.... 8-)
This is the key - it's the scaling of the 901A's that is the issue with the design. The scaling drifts. I've got a couple of 901A/B sets from the 1990's Don Martin era which, despite being connected to the latest modern power supplies, do this. The "tracking" of the 901Bs is terrific, and never changes, but the scaling of any 901A is going to be temperature dependent. You can calibrate the whole 901A scaling over a five octave range, but only temporarily. The idea of a front panel 901A scaling potentiometer is a good one!

My opinion is that the sound of a single 901B is nothing special, but the way that sets of 901Bs track with constant beat frequencies is very musical.

Cheers,
Roger

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Post by Sir Ruff » Fri Jun 21, 2019 12:59 pm

robotmakers wrote:My opinion is that the sound of a single 901B is nothing special, but the way that sets of 901Bs track with constant beat frequencies is very musical.
yes... I think that must be a big part of it.

But the other thing that I have just discovered that gives a more "organic" sound is that there is actually a lot of voltage bleed from one 901B to another. This leads to subtle but definitely audible pitch modulation.

I checked with Gerhard and this is apparently "normal" and inherent to the design--the result of them all sharing the same 10 volt line. Not sure I really understand why that causes pitch CV bleed, but in any case, that's how it is! I was able to lessen this someone by plugging in the audio of the offending B, though it doesn't reduce it completely :despair:

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Post by josaka » Fri Jun 21, 2019 3:21 pm

rumble mumble grumble..

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scale vs tracking?

Post by mark37 » Mon Jun 24, 2019 11:13 am

Hello there, taking advantage of the discussion I'm asking the difference between the "Tracking" regulation on the 901b and the "Scale adjustment" on the 901a.. I'm trying to calibrate my diy 901s :hmm:
Currently they stay in tune for more than 4 octaves, I'm trying to get the 5th octave to be usable..
What's the best I could hope for?

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Post by Sir Ruff » Tue Jun 25, 2019 2:07 pm

josaka wrote:rumble mumble grumble..
:lol: yeah, a bit. It's just a case of learning to accept what I normally treat as "flaws" as features in this case. Like, if there's pitch bleed, so be it, as long as that's what the originals did!

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Post by Ockeghem » Sat Jul 27, 2019 3:27 pm

Just picked up a set of these S-W modules from a local wiggler. Looking forward to getting them integrated into my MU/MOTM multiverse.
Got the 901ABBB, FFB, mixer, and VCA.
8-)
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Post by JohnLRice » Sat Jul 27, 2019 5:29 pm

Ockeghem wrote:Just picked up a set of these S-W modules from a local wiggler. Looking forward to getting them integrated into my MU/MOTM multiverse.
Got the 901ABBB, FFB, mixer, and VCA.
8-)
:mad: :cry: I mean . . . thank you for removing the burden of temping myself with buying those! :hihi: :tu:

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Post by Ockeghem » Sat Jul 27, 2019 10:16 pm

If Virginia was as close to Washington State as it is to Washington DC, you could try them out :hihi: :despair:
Maybe I’ll get around to doing a demonstration on the internet.
I already had some Mos-Lab 901s... I could try comparisons...
Like you I probably had more than enough modules already, but still in search of the ultimate Moog experience! :roll: 8-)
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Post by JohnLRice » Sat Jul 27, 2019 10:48 pm

Ockeghem wrote:If Virginia was as close to Washington State as it is to Washington DC, you could try them out :hihi: :despair:
Maybe I’ll get around to doing a demonstration on the internet.
I already had some Mos-Lab 901s... I could try comparisons...
Like you I probably had more than enough modules already, but still in search of the ultimate Moog experience! :roll: 8-)
:lol: Yeah, I SOOOO do not need more modular gear . . .or any kind of music gear but . . . . it does keep me off the streets at night! :ninja: :bananallama:

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Post by Mark11Audio » Sat Jul 27, 2019 11:16 pm

JohnLRice wrote:
Ockeghem wrote:Just picked up a set of these S-W modules from a local wiggler. Looking forward to getting them integrated into my MU/MOTM multiverse.
Got the 901ABBB, FFB, mixer, and VCA.
8-)
:mad: :cry: I mean . . . thank you for removing the burden of temping myself with buying those! :hihi: :tu:
You and me both !!! :woah: :woah: :woah:
"Trust No One, Question Everything..."

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Post by josaka » Sun Jul 28, 2019 2:18 am

Ockeghem wrote:If Virginia was as close to Washington State as it is to Washington DC, you could try them out :hihi: :despair:
Maybe I’ll get around to doing a demonstration on the internet.
I already had some Mos-Lab 901s... I could try comparisons...
Like you I probably had more than enough modules already, but still in search of the ultimate Moog experience! :roll: 8-)
old M-L or new ones..? has anyone actually bought the new 901s from M-L ..?
no one has said so or posted any demos.. still the only remaining demo is a song from Seb mixed and effects.. be curious to hear the SW/MLnew from the same source through the same set up.. :)

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Post by Ockeghem » Sun Jul 28, 2019 11:22 am

I think they are the old ones, meaning, Seb's new “improved” 901s as opposed to his later, more recent return to the original design :hmm: :mrgreen: :hmm: :yay:

Edit: I mean 901ABBB, not the straight 901
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Post by josaka » Sun Jul 28, 2019 1:04 pm

I'm confused now... :)

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Post by Ockeghem » Sun Jul 28, 2019 1:56 pm

Of course. 8-)
When Seb's first batch of 901ABBB modules came out he made various “improvements” to the original design. These are the ones I own.
The 2018 versions, on the other hand, roll back the clock to the 1960s era of “warts and all” authenticity, and I assume his customers wanted this.
It remains to be seen what I might get later on. Probably 921s if anything.
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Post by hamildad » Sun Jul 28, 2019 2:27 pm

Mark11Audio wrote:
JohnLRice wrote:
Ockeghem wrote:Just picked up a set of these S-W modules from a local wiggler. Looking forward to getting them integrated into my MU/MOTM multiverse.
Got the 901ABBB, FFB, mixer, and VCA.
8-)
:mad: :cry: I mean . . . thank you for removing the burden of temping myself with buying those! :hihi: :tu:
You and me both !!! :woah: :woah: :woah:
will unbookmark that BST thread now....
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Post by johny_gtr » Mon Jul 29, 2019 6:46 am

josaka wrote:
Ockeghem wrote:If Virginia was as close to Washington State as it is to Washington DC, you could try them out :hihi: :despair:
Maybe I’ll get around to doing a demonstration on the internet.
I already had some Mos-Lab 901s... I could try comparisons...
Like you I probably had more than enough modules already, but still in search of the ultimate Moog experience! :roll: 8-)
old M-L or new ones..? has anyone actually bought the new 901s from M-L ..?
no one has said so or posted any demos.. still the only remaining demo is a song from Seb mixed and effects.. be curious to hear the SW/MLnew from the same source through the same set up.. :)
Hmm, it looks like Seb has disappeared.
Now I have a set of SW 901 and a set of ML 921. Maybe changing SW901 and ML 921 to ML 901 is a good idea for me (I still think that my MU modular is the biggest and coolest monosynth than 2 voice system).

it's still interesting and ML 901 are more stable that SW?
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Post by josaka » Mon Jul 29, 2019 2:24 pm

.not sure the ML is more stable than the SW..

seb has not disappeared. hes just making an ARP 2500 !

said hes making 5 full systems of 10 module types..
1004-T VCO
1004-P VCO
1005 Mod Amp (ring / VCA)
1006 Filter Amp (24dBfilter / VCA)
1016 Dual noise / Random voltage genrator
1027 Clocked sequential controller
1033 Dual envelope generator with delay
1036 Dual S&H / Random voltage generator
1047 Multimode Filter / Resonator
1050 Mix sequencer

here is first one..
Image

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Post by JohnLRice » Mon Jul 29, 2019 2:32 pm

josaka wrote: Image
:love: :drunkhomer: :party:

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Post by johny_gtr » Mon Jul 29, 2019 3:00 pm

josaka wrote:.not sure the ML is more stable than the SW..

seb has not disappeared. hes just making an ARP 2500 !

said hes making 5 full systems of 10 module types..
1004-T VCO
1004-P VCO
1005 Mod Amp (ring / VCA)
1006 Filter Amp (24dBfilter / VCA)
1016 Dual noise / Random voltage genrator
1027 Clocked sequential controller
1033 Dual envelope generator with delay
1036 Dual S&H / Random voltage generator
1047 Multimode Filter / Resonator
1050 Mix sequencer

here is first one..
Image
looks great but I will prefer if them will be in MU format even can be not black. I'm not a guy who need authentic UI (especially because I didn't live in the era of original version), but I prefer to mix modules between Moog, ARP and other sounds than have several different great mono blocks. 1047 looks interesting module
modular percussion and scapes - http://ovod.bandcamp.com
mu modular space electronica https://7k-ok.bandcamp.com

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Post by josaka » Mon Jul 29, 2019 3:26 pm

he is building clone systems.. these would be tricky in 5u as they have a matrix system..(look at bottom of panel) .. there are (expensive)clones in euro now so its possible.. as far as panels silver would be fine for a little 2500 section..

[video][/video]
Last edited by josaka on Mon Jul 29, 2019 3:31 pm, edited 1 time in total.

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Post by Sir Ruff » Mon Jul 29, 2019 3:30 pm

josaka wrote:he is building clone systems.. these would be tricky in 5u as they have a matrix system..(look at bottom of panel) .. there are (expensive)clones in euro now so its possible.. as far as panels silver would be fine for a little 2500 section..
RAD... do you know any more about these (I've also dropped Sebastien a line).

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Post by josaka » Mon Jul 29, 2019 3:40 pm

he said hes building 5 systems.. that is the only info so far..
(that and a module list.)

Edit: just read that some of the components/parts are rare and expensive..
so.. this will not be cheap I fear... :(

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Post by Rex Coil 7 » Tue Jul 30, 2019 11:38 am

JohnLRice wrote:
josaka wrote: Image
:love: :drunkhomer: :party:
John ... NO! .... just no. Bad dog! Nnnno!



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5U PROJECT - (skip pages 4 through 6, boring junk) ... https://www.muffwiggler.com/forum/viewt ... highlight=

JohnLRice

Post by JohnLRice » Tue Jul 30, 2019 11:55 am

Rex Coil 7 wrote:
JohnLRice wrote:
josaka wrote: Image
:love: :drunkhomer: :party:
John ... NO! .... just no. Bad dog! Nnnno!
.
:waah: :cry:

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