The Logic Off Topic list

----- Original Message -----
> From: "Markus McCulloch" <markusm@...>
>
> I know this is sort of OT, but I'm having a problem with my Eurorack
2004A,
> (although I monitor Logic through it, how's that?) and I figured someone
> here's gotta remember some stuff from those heady analog days.
>
>  I find that after the unit has been powered up for a while, it begins to
> emit a high pitched ringing on the auxillary outputs (*outputs*, not
sends -
> as in bus B). I'm guessing the sound is around 6-12 KHz.
>
> Is this something that's likely to be fixable (is it common in mixers?) or
> is it just bad design?

It's fixable. It's a sign of age of the mixer. The capacitors in the signal
path are becoming old and so they contribute to oscillation. That's what you
hear. If you are technically handy, you could replace all the components in
the signal path with new ones. But that can cost you a lot of time and we
don't have that don't we?
It's better to look out for another mixer.

> I've also had problems where sounds being sent to the main outs bleed
> through to the auxillary outs - but that is something I just put down to
bad
> design (but I mention it here in case it's related). ]

This is exactly the same thing, age of the mixer and cheap components.
Electrical components emit when there is signal running through them. If
most of the signal is decipated not through the component but through heat
and the air, you get this interference, bleeding.

>
> Damn, I *knew* I should have gotten that Mackie 1604.

Or a Tascam, they're cheap now.
Yoonchi.


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