Current

[BWLover]

What is the amount of current that the RB-1090 outputs? I read somewhere that the RB-1092 outputs 40 amps of current...so what does the 1090 have?


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[PewterTA]

It's definitely not 40 amps.... it runs on a 15amp circuit....

I think when it was running it hovered around 50 watts though. I could be wrong on that, it's been well over a year since I put the meter on the amp.

[Kevin P]

Doing some math I came up with:

380W @ 8 ohms: 55.2 volts x 6.9 amps

700W @ 4 ohms: 52.9 volts x 13.225 amps

Values are approximate of course, since speaker impedance tends to vary with frequency, but it gives you an idea how many volts and amps are needed to drive X watts into 8 or 4 ohm loads.

Of course in reality the average power is a lot less unless you're clipping the heck out of the amp and making your speakers melt down.


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[srb]

It's definitely not 40 amps.... it runs on a 15amp circuit....

On a continuous basis, no. But given a power supply with adequate storage/filter capacitance, the instantaneous peak current output can far exceed the continuous current available from the mains AC supply circuit.

Steve