On Tue, Jan 26, 2010 at 11:02:58AM -1000, Joel Roth wrote:
> Just to underline that, gain controls are usually pots
> that *attentuate* the signal. The top setting (danger!
> ohnoes!) is just letting the signal through with no
> attenuation.
That would be true for most mixer faders and
for normal volume controls. But in that case
it's not done as in your drawing, but by using
the pot as a voltage divider:
____
in |
r
r
r______
r out
r
r
____|______
ground
The exception is the gain control in a mic
preamp where the pot is normally used as a
variable resistance (as in your drawing),
but there it is part of the feedback circuit.
There's normally no attenuation in the signal
path (except for a -20dB pad or something
similar).
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@xxxxxxxxxxxxxxxxxxxx
http://lists.linuxaudio.org/listinfo/linux-audio-user
