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RE: Why More Power?

The generally conceded measure for amplifier power is the 'watt'. 1 watt is 1 volt @1 amp.
Certain adjustments need to be made for reactive loads where the VA is more useful and results in a measure called power factor.

You can have different measures, however, based on time limits. 'D' amps, for example, are time limited due to heat sink issues. Some A/B amps will not pass the Stereophile preconitioning period without overheating. Heat Sinks are conceded to be expensive and heavy to ship, and take up more space.

For purposes of this discussion, I'll go with the manufacturers listed 'rms power'.

And since Maggies are GENERALLY a benign, low-reactance load of low sensitivity, I feel fairly safe in using the amplifier manufacturers power rating.

Some interesting things DO pop up when checking further, however. The Pass XA30.5 is rated at 30 watts. However, at redline, fully in A/B mode, it's a LOT more power. Enough more power that I would NOT hesitate for an instant to Biamp my MG1.6s with a PAIR of 'em. Add another (aprox) 3db when going to an active OR passive line level crossover.
I doubt I'd ever make the bias meter even flicker!

Does this help?
Too much is never enough

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