Moog Grandmother - knob resistance

Mother-32, DFAM, Subharmonicon, Grandmother, Matriarch
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synthury
Posts: 4
Joined: Fri Nov 20, 2020 5:48 am

Moog Grandmother - knob resistance

Post by synthury » Fri Nov 20, 2020 5:53 am

Hello There,

Just got my first Moog today !

I opened it up quickly in order to check the unit, but have not time to hook it up.

I tested all knobs but two of them seems to have a different resistance than the other :

- Cutoff (which could be normal)
- Envelope Amt - which seems to have no resistance at all.

Could you please tell me if this is normal or I got a defective unit ?

Again, I didn't turn it on for now.

Thank you for your feedback !

BR

S.

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bichuelo
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Location: Bogotá, Colombia
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Re: Moog Grandmother - knob resistance

Post by bichuelo » Sat Nov 21, 2020 8:12 pm

I am checking the knobs on some of my gear, but I can't find one on which all of the knobs have the same resistance. None of them are cheap: Yamaha, Koma Elektronik, Ableton, Modal Electronics. I would say it is completely normal
http://audiotecna.info
T-III, Voyager, VX-351, Slim Phatty, Model D, Sub Phatty, Subsequent 37, Minitaur, all moogerfoogers and minifoogers, EW+, Theremini, Model 15, Filtatron, Animoog, Model D App, iOS 11 Mother-32, DFAM, Werkstatt, Win7, High Sierra

Francishunt
Posts: 20
Joined: Wed Dec 02, 2020 11:45 pm

Re: Moog Grandmother - knob resistance

Post by Francishunt » Sat Dec 26, 2020 12:17 pm

Hi synthury

My Matriarch has a much looser cutoff knob - the rest of the knobs are quite solid feeling.

Same with the sub phatty - except the cutoff knob is much more stiff
synthury wrote: Fri Nov 20, 2020 5:53 am Hello There,

Just got my first Moog today !

I opened it up quickly in order to check the unit, but have not time to hook it up.

I tested all knobs but two of them seems to have a different resistance than the other :

- Cutoff (which could be normal)
- Envelope Amt - which seems to have no resistance at all.

Could you please tell me if this is normal or I got a defective unit ?

Again, I didn't turn it on for now.

Thank you for your feedback !

BR

S.

electrodan
Posts: 2
Joined: Fri Feb 05, 2021 8:14 pm

Re: Moog Grandmother - knob resistance

Post by electrodan » Fri Feb 05, 2021 8:24 pm

Synthury,
I discovered the exact same thing on my new Grandmother. I was suspicious as well. The Filter Cutoff and Filter Env. Amt knobs have a different feel than every other knob on the unit. My thought was, yeah cutoff for fast filter sweeps... sure. The fact that you had the same experience with the same two knobs is reassuring that it is, in fact, by design.

Can anyone else confirm that this indeed by design?

Thank you!
synthury wrote: Fri Nov 20, 2020 5:53 am Hello There,

Just got my first Moog today !

I opened it up quickly in order to check the unit, but have not time to hook it up.

I tested all knobs but two of them seems to have a different resistance than the other :

- Cutoff (which could be normal)
- Envelope Amt - which seems to have no resistance at all.

Could you please tell me if this is normal or I got a defective unit ?

Again, I didn't turn it on for now.

Thank you for your feedback !

BR

S.

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ummagumma
Posts: 573
Joined: Sun Aug 21, 2016 8:37 pm
Location: Canada

Re: Moog Grandmother - knob resistance

Post by ummagumma » Sat Feb 06, 2021 12:21 pm

FYI just checked my GM it's the same as yours

but seriously, knob resistance will change over time as you use the thing, I wouldn't worry about it!

electrodan
Posts: 2
Joined: Fri Feb 05, 2021 8:14 pm

Re: Moog Grandmother - knob resistance

Post by electrodan » Sat Feb 06, 2021 7:01 pm

Nice. Thanks ummagumma!

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dct
Posts: 18
Joined: Thu Feb 20, 2020 10:31 am

Re: Moog Grandmother - knob resistance

Post by dct » Mon Feb 15, 2021 4:34 am

I would emphasize that I like the ENVELOPE AMT haptical feedback at zero-crossing (on my GM) which gives you the chance to work blindly on this control. Would be great if moog introduced this zero-crossing mechanical feedback for all their gear with -/0/+ controls.

Could it be introduced aftermarket with another knob mechanics? (sorry for the no-clue-question).
keys: CX-3 II, GRANDMOTHER, streichfett

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