Help THRESHOLD 400A AMP, Nelson?

[vsr123]

Hi
Does anyone know what the rating of this amp is per channel? How much heat is dissipated by this amp? Is it comparable to an Aleph 3? What are the power rails and capacitance for its PSU?

thanks so much
vsr

 

[Cobra2]

http://www.threshold-audio.com/discontinued.html

Arne K

 

[roddyama]

If I'm not mistaken, this amp, like the 800A, gained efficiency by using a dynamic bias circuit.

 

[Nelson Pass]

That is correct. It was rated at 100 watts/ch and idled at
about 125.

 

[vsr123]

thanks everyone

thanks for those prompt replies. I was looking at using an old amp I saw in a surplus store as the chassis+heatsink for an aleph 3, I guess the heatsink should be sufficient.
Does anyone know about the PSU rails (I dont know if they are working or not as yet)? Can I just use this for the Aleph 3?

thanks
vsr

 

[Nelson Pass]

The rails are about 45 volts. This would be more appropriate
to an Aleph 2 than a 3, whose rails are +/-25