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Simple knob that sends -5 V to +5 V?
MUFF WIGGLER Forum Index -> Modular Synth General Discussion  
Author Simple knob that sends -5 V to +5 V?
Mr D
Hi folks,

Hopefully someone can set me straight on this:

Firstly, please take a look at this youtube vid about the ACL Variable Sync VCO:
https://youtu.be/rWUc4ldPyi0

I'm thinking about getting this OSC. But one thing i notice in the vid is you can't sweep (manually) the full range of the OSC quickly. The guy needs to do several turns to even change the pitch a couple of octaves.

But i'm thinking i'll be able to do this via the 1 VOLT / OCT input.

But now i'm wondering: what module do i need to buy for this? So, a module that gives me a physical knob (obviously connected to a CV output) that i can turn from full c/clockwise (-5 volts) to fully clockwise (+5 volts)?

Ideally it should be a BIG knob like on the Pittsburgh stuff!

Or to ask the question in a different way: what category of module should i select on Modular Grid to view modules designed to do this? LFO? Or CV Modulation??.....or??

Thanks!
ngarjuna
Anything with an offset control should give you what you’re looking for. Attenuverters on modules like Maths, Triatt, SISM, etc.
Gizmo
STG Active Attenuator
http://stgsoundlabs.com/products/attenuators_mu.htm

Synthesizers.com Q125 Signal Processor
https://synthesizers.com/q125.html

Moon Modular 525 Quad Reversible Attenuators
http://www.lunar-experience.com/assets/downloads/525.pdf
sduck
Manhattan Analog CVP - https://manhattananalog.com/products/cvp

(by the way just get one, it's a workhorse utility that you'll use all the time)
JohnLRice
Also if you have a spare ADSR in your system, some designs can be used as a variable voltage source using the Sustain knob if nothing is plugged into the Gate/Trigger input jack(s). (I'm thinking of at least the MOTM-800, although it's not bipolar))
Umcorps
Intellijel TriAtt - https://intellijel.com/eurorack-modules/triatt/

Three of them in a useful arrangement.
Keltie
Fonitronik cascade. Three channels, acts as an attenuverting mixer too.
Mr D
Thanks, think i'll pick up a Triatt for starters.

Strange, though, that there isn't a module available with a really big knob that does this. Seems like it would be very useful in live performance for subtle tweaking.

Anyone know if i could use any of the Pittsburgh modules with the really big knobs for this?
cptnal
Up until I got Blinds I used a Doepfer A183-2. The Doepfer does what it says on the tin like any other Doepfer module, but Blinds is super handy.
BenA718
cptnal wrote:
Up until I got Blinds I used a Doepfer A183-2. The Doepfer does what it says on the tin like any other Doepfer module, but Blinds is super handy.

I use Doepfer as well, it’s super handy for attenuation or amplification.
Umcorps
Mr D wrote:

Strange, though, that there isn't a module available with a really big knob that does this.


cptnal
Umcorps wrote:
Mr D wrote:

Strange, though, that there isn't a module available with a really big knob that does this.




Pure filth! eek!
nostalghia
Mr D wrote:

But now i'm wondering: what module do i need to buy for this? So, a module that gives me a physical knob (obviously connected to a CV output) that i can turn from full c/clockwise (-5 volts) to fully clockwise (+5 volts)?

Ideally it should be a BIG knob like on the Pittsburgh stuff!

Or to ask the question in a different way: what category of module should i select on Modular Grid to view modules designed to do this? LFO? Or CV Modulation??.....or??


It's a fader instead of a knob (which makes it easier to see the position at a quick glance), but take a look at the Ladik U-081. Set the jumpers on the back so it puts out -5v to +5v. Only 4hp wide.
Ladik U-081

On Modular Grid, select the "Controllers" category-you'll see a wide variety of joysticks (Intellijel Planar is a favorite-can be set to unipolar or bipolar CV out for X and Y axis independently), touchpad, etc. that are useful for live tweaking of various parameters in a patch. Check out the Tetrapad or Mutable Instrument's Frames for example. Or the controller products from Synthwerks and Soundmachines.

BTW, even though your question is general in nature, if your system is Eurorack format only, you'll find you get more responses (because it gets more traffic) and "Euro specific" recommendations over in the Eurorack Modules section.
DrReverendSeance
Oakley Control - I don’t think it has been mentioned yet. http://www.oakleysound.com/control.htm

The PCB has been discontinued but you can find them used.
PrimateSynthesis
JohnLRice wrote:
Also if you have a spare ADSR in your system, some designs can be used as a variable voltage source using the Sustain knob if nothing is plugged into the Gate/Trigger input jack(s). (I'm thinking of at least the MOTM-800, although it's not bipolar))


It is if you change jacks hyper
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