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DIY For Audio
A 1000VA transformer is a scary thing!
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<blockquote data-quote="JimGore" data-source="post: 429932" data-attributes="member: 3"><p>The current bias is set for around 1 amp per rail so it runs in class A for about the first couple of Watts. Probably heavier than most class AB amps, but nowhere near actual class A. From actual average voltage measurement I made on the output of the amp driving my speakers, it seems I only use about 0.4 Watt RMS over a 2 minute period for reasonably loud listening. I would therefore say that even though the amplifier is a class AB unit, in my system in runs in full class A mode for everything other than the heaviest transients.</p><p></p><p>The previous iteration where I burnt out the power transistors I had literally biased them to death running about 4.5 Amps per rail :-[</p></blockquote><p></p>
[QUOTE="JimGore, post: 429932, member: 3"] The current bias is set for around 1 amp per rail so it runs in class A for about the first couple of Watts. Probably heavier than most class AB amps, but nowhere near actual class A. From actual average voltage measurement I made on the output of the amp driving my speakers, it seems I only use about 0.4 Watt RMS over a 2 minute period for reasonably loud listening. I would therefore say that even though the amplifier is a class AB unit, in my system in runs in full class A mode for everything other than the heaviest transients. The previous iteration where I burnt out the power transistors I had literally biased them to death running about 4.5 Amps per rail :-[ [/QUOTE]
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DIY & Tutorials
DIY For Audio
A 1000VA transformer is a scary thing!
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