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Re: [Doepfer_a100] Doepfer A132-3 Dual VC Bleed

2019-04-08 by Diego Ragnini

I firstly thought that it could also depend by the gate or the envelope generator you’re using (if any), then I recall that some VCA are used not to close completely, finally I read that your VCA is mounted on a low cost case so I am afraid it might depend on the floating ground. I had similar issue and users here had helped me. That kind of case need to be grounded. But wait for further advice coming from other users. Best, dxx


> Il giorno 08 apr 2019, alle ore 18:37, neal@neallayton.co.uk [Doepfer_a100] <Doepfer_a100@yahoogroups.com> ha scritto:
> 
> 
> Hello all.
> 
> I’ve just noticed an unusual behaviour on my A132-3 Dual VCA
> 
> With no gain and 0 cv the bottom channel is letting bleed through.
> 
> It seems to be on linear mode only, and it is easily audible. Top channel is fine.
> 
> Looking at the pcb my module is a v2 revision with two TL074CN IC’s and  and one V2146D IC.
> 
> https://www.dropbox.com/s/0kgmlmhitb21ix8/A132-3.JPEG?dl=0 <https://www.dropbox.com/s/0kgmlmhitb21ix8/A132-3.JPEG?dl=0>
> 
> If anyone can advise it would be really helpful as I need to use the module to gate two channels of samples at a theatre event soon. The sample material suits a linear response, so I really need both channels to open and close at a similar rate, and to close to silence!
> 
> Many thanks,
> 
> Neal
> 
> 
> BTW  It’s a small LC1 rack, though I’ve tried it in my LC 3 and LC 6. I’m also using a recently purchased Doepfer A140-2 which I completely love. It pairs with the A132-3 really well and is so compact and useful, especially for stereo signals and twin voices. Would recommend it to anyone wanting to save HP.
> 
> 
>

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