White Instrument 4000series & 4400 EQ crossover plug in cans

Archived from groups: rec.audio.pro (More info?)

Ted Riesz <triesz@actewagl.net.au> wrote:
>Hi does anyone have a circuit for any of these? Any other advice on these
>would also be appeciated.
>
>I am contemplating rolling my own for custom crossover configurations. Do
>not believe White Instruments have any schematics availlabe for these
>although schematics for the EQs are available.

I think the stuff that is actually _inside_ the cans is proprietary and
they never did have schematics available. You are supposed to replace the
cans as a module rather than repair them.

And I think they are also just generic op-amp based filters. I bet you
find something absolutely identical in Don Lancaster's _Active Filter
Cookbook_.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."