Bob007 0 Report post Posted December 9, 2005 Hi, This question is about how Crown rates power output. With my CE2000 connected to 2 Dale 50 watt 2 ohm resistors in serious, at full power, single channel, I measured 72 volts at the output terminals. If I am doing the math correctly that is 1296 watts. Other amps I have tested this way always fell within, or less than rated output. I know these resistors are rated at 50 watts so I never test for longer than it takes to get a reading. Is it possible that the CE2000 can output 1296 watts single channel for short periods like this? Or is my load causing an erroneous reading. At what current does the amp start to limit? 72v into 4 ohms would be 18 amps. Thanks in advance.... Bob Share this post Link to post Share on other sites

DGlass 0 Report post Posted December 9, 2005 You don't say but I am going to assume you were using a 1K Hz signal for the test. It sounds to me like you were reading Peak Voltage not the RMS voltage. Take the peak voltage and multiply it by .707 72 x .707 = 50.904 volts rms (~51 volts) Using Ohms Law: Power is equal to the voltage squared divided by the impedance. (51v x 51v)/4ohms = 650.25 watts That's pretty close to the published 4-ohm "Max. Average Power" at 1k Hz rating of 660 watts. It looks like what you were reading was the Peak Power available at the frequency of testing not the RMS power. Share this post Link to post Share on other sites