200e

n00b alert

I find the 292e does not shut down as completely as I expected at 0 volts, especially in 
combo mode. When passed through 2 gates, in various combinations, I can get it working 
great. But there is a lot more bleed-through than I expected when using a single gate.

Is this normal behavior?

Thanks for the tips,
M

are you asking about the decay time of the two functions at a voltage
drop to zero, and also signal bleed through at 0v?

i know people talk about vactrols (which are optoisolators, vactrol is
a brand name) and how they pertain to Buchla alot; 

but....what you describe sounds like standard behavior for them, at
least, as implemented in the control domain of a VCA or VCF. the
device(as used in the classic "Buchla Lopass Gate" introduces an
amount of slew into the circuit that is not found in a standard two or
four quadrant multiplier in use as an audio amplifier. the purpose of
this is being to approximate (note, not imitate :) ) the decay of a
plucked string of an acoustic instrument and the like. or it was a
happy accident, whatever.

as to the bleed through, i've heard only the smallest amount of bleed
through at zero offset and 0v in, on the 292. if i remember correctly,
this problem was remedied even further on the e series. but some bleed
through is understood (as far as i understand :) ) par for the course. 

hope this was helpful. if not, sars and i make no claim to accuracy. 

christian mirande


--- In 200e@yahoogroups.com, "rreprobate" <lord@...> wrote:
>
> n00b alert
> 
> I find the 292e does not shut down as completely as I expected at 0
volts, especially in 
> combo mode. When passed through 2 gates, in various combinations, I
can get it working 
> great. But there is a lot more bleed-through than I expected when
using a single gate.

> 
> Is this normal behavior?
> 
> Thanks for the tips,
> M
>