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Old 8th May 2010, 05:55 PM   #1
meconlen is offline meconlen  United States
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Join Date: Apr 2010
Location: Sarasota, Fl.
Default Expander

One of my favorite pieces in my main system setup is a dbx 266XL Compressor/Gate. I use it exclusively as an expander when I'm listening to anything but most jazz & classical.

Now I'm working on an integrated headphone active pre-amp & amplifier. I've been thinking about trying to integrate an expander in with it all but haven't been able to find schematics. Any pointers?

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Old 8th May 2010, 09:51 PM   #2
mickeymoose is offline mickeymoose  Canada
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THAT 2150s, 2180s and 4301s come to mind. Check THAT Corporation Audio Technology
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Old 17th May 2010, 01:19 PM   #3
carolus is offline carolus  Belgium
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Join Date: Jan 2005
Location: Brussel
Default expander

Originally Posted by meconlen View Post
.....able to find schematics .....
I know the:
(old) IC from "Linear LSI products" type NE570 (cfr cat page AN174 "Hi-Fi expandor)
Practical realisation cfr: Radio Plans Nr 457
No experience
RadioTron, with (plenty) practical tubes- schema ...cfr: chapter 16, page 679
No experience

It's amazing with this kind application (expandor): all music with vinyl - Cédé & Fm are more "vivifying" ....
One musical note:
Since '67 I had a nice application in my pré/line-amp from "André Dumortier" (Bi-Sforzando) ....

Do It,

Allez, salukes,
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