Kommander + A148 T&H issue ?

Discussion and support for KOMA Elektronik effects pedals, eurorack gear and all the other stuff we do...

Moderators: Kent, osterchrisi

Post Reply
User avatar
oscillateur
Super Deluxe Wiggler
Posts: 1131
Joined: Sun Feb 20, 2011 1:45 am
Location: Tokyo

Kommander + A148 T&H issue ?

Post by oscillateur » Thu Oct 10, 2013 12:12 am

Hi,

I'm trying to use my Kommander with one half of a Doepfer A148 (configured as a T&H and not as a S&H).

Basically, I want the output of the T&H to follow the Kommander's CV output as long as the gate is active and to keep the last value when the gate is not active. That's textbook track & hold.

I verified that the T&H works well in other situations, but I can't get it to work as I want with the Kommander. When I move my hand away from the Kommander, the T&H's output drops down to 0 instead of keeping its value.

The patching is : Kommander CV out into T&H Sample In, Kommander's Gate out into T&H's Trigger in, T&H output into whatever I want to modulate.

Has anybody managed to make this work ?
Any idea of what's wrong there ?

osterchrisi
Common Wiggler
Posts: 239
Joined: Sun Jan 10, 2010 7:17 pm
Location: Berlin, Germany

Post by osterchrisi » Thu Oct 10, 2013 3:48 am

oscillateur, did you set your gate threshold to match your hand movement?The gate is high as long as the CV output of your Kommander is above a certain value. So if you would have to "stop" your movement below that value to make your T&H happen. Would you stop your movement below that value the gate probably stays longer just enough to let the value fall to zero before it goes low.

I can imagine that your gate threshold probably doesn't match your configuration, so you can try to play around with the gate threshold trimmers I'd suggest.

User avatar
oscillateur
Super Deluxe Wiggler
Posts: 1131
Joined: Sun Feb 20, 2011 1:45 am
Location: Tokyo

Post by oscillateur » Fri Oct 11, 2013 12:53 am

Ahah, I didn't know about gate threshold trimmers, that indeed sounds like a possible reason for this behaviour.

But if the gate works like this is it really possible to use the Kommander as I want (i.e. I basically want the CV out to keep its value for a tiny, tiny moment of time after the gate turns low so that the T&H can keep that value) ?

User avatar
spunkytoofers
Wiggling with Experience
Posts: 309
Joined: Sat Sep 29, 2012 12:47 pm

Post by spunkytoofers » Fri Oct 11, 2013 1:27 am

i'm not completely sure how the koma kommander works in regards to gate activation.

for example i use a-148 with breath control. but if i use gate out from the breath controller from an envelope follower the breath controller will zero out before it can sustain the voltage at where you want it so in that case i need to activate a seperate trigger. so it works from a different trigger from the thing that uses the CV source itself doubled as a gate.

have you tried a different gate source altogether? it should work perfectly in that sense. otherwise there are always means to do what you want if somewhat convoluted.

Post Reply

Return to “KOMA Elektronik”