Materials needed: music source, amp to be tested for power output, speaker w/power handling greater than amp's output, AC meter. Hook up speaker to amp & simultaneously connect AC meter to amp's speaker output. Play music on amp and turn up volume slowly just till distortion is audible. Peak voltage over 2.83 (volts per watt) = aproximate wattage output.
How to measure the power output?
I need to know the power output of my Roger RS-4 integrated amplifier before buying speakers. However, no indication marked on the amp. How can I measure its power roughly? I tried to measure the sould lever by Sound Level Meter by comparing with my Yamaha VX496 with 65W@8ohm power output. Both RS-4 and VX496 were set at 9 o'clock position. The reading for VX496 is more than RS-4. Does it means RS-4 get less than 65W@8ohm? The same result come out when I measure the level at 12 o'clock postion.