Threshold 400A Amp Schematic. - diyAudio
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Old 1st April 2005, 07:53 AM   #1
sulky is offline sulky  United States
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Default Threshold 400A Amp Schematic.

Firstly, I would like to say how impressed I am with this fine forum. Glad to have found this site...

Anyway, I have a Threshold 400A amplifier and I am on a quest to find a copy of the schematics for this unit. I want to give this amp a good checkup and some potential upgrading, a schematic would be very useful in this regard. The amp has two fuses on the rear as opposed to some of these units that I believe have five.

I have searched all over the web and elsewhere and can not seem to find a copy of this classic amps schematic. If anyone out there has a copy, scan, or link to the schematics for this amp and can help me out please respond and let me know.

Thanks !
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Old 1st April 2005, 08:01 AM   #2
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You can find the schematic here:

http://www.passlabs.com/np/

Try the 400a-4000.tif file.

Regards
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Old 1st April 2005, 01:39 PM   #3
sulky is offline sulky  United States
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Join Date: Mar 2005
Location: USA
rtirion:

Thanks for the assistance. I new there had to be a copy around but just couldn't find it. Thanks...
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