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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Power Consumption in Class A Solid State Amps.....Help needed. posted by rmzidann on April 21, 2007 at 11:59:14:
A pure class A amp will draw the EXACT same power from your mains line at idle as it does as full ouptut capacity.This is the case with my Pass Labs Aleph 3 which is pure class A and it draws 250 watts ALL the time no matter if it is idling or pounding out it's rated 30 WPC into 8 ohms or 60 WPC into 4 ohms.
As the Aleph 3 idles at 4 times it's rated output, I think we can safely say that it is a "pure" class A design :-)
As per Nelson Pass: "The "purity" of class A has been an issue in the last few years, with "pure" class A loosly defined as an idling heat dissipation of more than twice the maximum amplifier output. For a 100 watt amplifier, this would be 200 watts out of the wall at idle"
Hope this helps,
~kenster
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Follow Ups
- Depends on the "purity" of the Class A design...... - kenster 15:17:19 04/21/07 (0)
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