[sdiy] Mixer levels

[Sowa Roman]

if there's 8 inputs, it's rather rare situation that all of them
are at +10V at once. Usually some of them can be -10V,
some -2, +3 ets, so the summ still fits in output range.
But if you want them all, go ahead and build a mixer
with +/-80V span. ;-)
But who would want that? Mixer output will probably controll
some other module, and even if it clips, it will be at so high
voltage (say, 15V) that is beyond specified limits of controlled
module input voltage.

If non-attenuated signal is less desirable than clipping, use
output fader. But it must be placed before output buffer,
otherwise it will attenuate already clipped signal.
Following input buffers' (if any) resistors, or in output buffer
gain controll (e.g. feedback resistor).

Roman

__-----Original Message-----
__From: Tim Ressel [mailto:madhun2001 at yahoo.com]
__Sent: Friday, May 17, 2002 1:51 AM
__To: Synth-Diy
__Subject: [sdiy] Mixer levels
__
__
__Hi gang,
__
__Okay, here's a question I've always wondered about:
__How do mixers work? Specifically, I am curious about
__how the levels work. Let's say you have an 8-input
__mixer. If you have 8 +/-10V sigs, then it seems you'll
__need some attenuation, or else the output will clip.
__But if you have only 2 inputs live, you'll need less
__attenuation. Is this handled by the output fader?
__
__--TR
__
__
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