03-08-2026, 03:59 PM
Rich
Measure the voltage under load, with at least the amp turned on: this will draw the quiescent current (they put it through to get rid of crossover distortion) which for CLASS AB could very well be in 100-300mA (gets the output pretty warm).
This will load the power supply. Somehow I think it is unregulated type, just the bridge and the caps. These will show much higher volts without the load.
You need the one with the amps on.
Unless you already have them on. Then I agree, not too much margin, but good caps will last awhile.
Measure the voltage under load, with at least the amp turned on: this will draw the quiescent current (they put it through to get rid of crossover distortion) which for CLASS AB could very well be in 100-300mA (gets the output pretty warm).
This will load the power supply. Somehow I think it is unregulated type, just the bridge and the caps. These will show much higher volts without the load.
You need the one with the amps on.
Unless you already have them on. Then I agree, not too much margin, but good caps will last awhile.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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