You will get those for 125 V too I suppose.
The load and output fluctuate with music.
The OP wants to estimate the output.
Nobody is going to sue him if it is 44 W/ch instead of 45 W/ch.
This is connected to mains, and the amp connected to it, it simply informs the user how much mains power the amp is taking, tell me how it will drain power from the secondary side of the circuit?
The indicator is mains powered...
Or he can get an integrating power recorder, the kind used in power stations, and rig it for audio frequencies.
Those record MW, we are talking Watts here.
Last point is the usefulness and frequency of use, it makes no sense in spending lots of money for something which will see only occasional use.
I agree that estimating power like this is not the standard method, but those standard methods need some specialist equipment, not really needed either.
The load and output fluctuate with music.
The OP wants to estimate the output.
Nobody is going to sue him if it is 44 W/ch instead of 45 W/ch.
This is connected to mains, and the amp connected to it, it simply informs the user how much mains power the amp is taking, tell me how it will drain power from the secondary side of the circuit?
The indicator is mains powered...
Or he can get an integrating power recorder, the kind used in power stations, and rig it for audio frequencies.
Those record MW, we are talking Watts here.
Last point is the usefulness and frequency of use, it makes no sense in spending lots of money for something which will see only occasional use.
I agree that estimating power like this is not the standard method, but those standard methods need some specialist equipment, not really needed either.
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You some other options:
1. AC Watt meter like the Valhalla Scientific 2000, 2100, 2111 and others. They have 50 kHz Bandwidth and the input voltage go up to 600 volt. I use them for both primary power & speaker type loads.
2. Audio Precision, Audio Analyzer or similar: They compute and read in Watts @ different Z that you enter.
The AC Power meters like the P3 or similar are self powered 100-132 volts and read Watts for 50/60 Hz only (limited bandwidth).
Duke
1. AC Watt meter like the Valhalla Scientific 2000, 2100, 2111 and others. They have 50 kHz Bandwidth and the input voltage go up to 600 volt. I use them for both primary power & speaker type loads.
2. Audio Precision, Audio Analyzer or similar: They compute and read in Watts @ different Z that you enter.
The AC Power meters like the P3 or similar are self powered 100-132 volts and read Watts for 50/60 Hz only (limited bandwidth).
Duke