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-   -   Threshold 4000 (http://www.diyaudio.com/forums/pass-labs/81080-threshold-4000-a.html)

R-K Rønningstad 8th June 2006 05:43 AM

Threshold 4000
 
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Please find attached some 4000 schematics; PSU, display etc

Rolv-Karsten

R-K Rønningstad 8th June 2006 05:45 AM

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Another

R-K Rønningstad 8th June 2006 05:47 AM

4000 psu
 
2 Attachment(s)
Power supply 4000

R-K Rønningstad 8th June 2006 05:48 AM

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Another...

R-K Rønningstad 8th June 2006 05:49 AM

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And the transformer

R-K Rønningstad 8th June 2006 05:51 AM

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And finally the schematics for good measure

SkyChu 14th June 2006 09:49 AM

Very Thank you!

Zero Cool 1st July 2009 03:05 PM

Quote:

Originally posted by SkyChu
Very Thank you!

YES thank you! I have a 4000 on its way here now! from a secret lab location located somewhere up in the Hills of calif-forn-i-a!!!

Nelson Pass 1st July 2009 07:15 PM

Many thanks for the timely posting - one of my business partners
requested that information to repair an old 4000, and I didn't have
them.

Keep in mind that there are a couple of variations on the front end
circuit, but if you find that yours is different, it is likely the one
where the driver devices are a butt-load of to-92 devices in parallel.

:cool:

Zero Cool 2nd July 2009 01:57 PM

Quote:

Originally posted by Nelson Pass
Many thanks for the timely posting - one of my business partners
requested that information to repair an old 4000, and I didn't have
them.

Keep in mind that there are a couple of variations on the front end
circuit, but if you find that yours is different, it is likely the one
where the driver devices are a butt-load of to-92 devices in parallel.

:cool:

Thanks for the heads up. I can't wait for it to arrive and I can dig in!


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