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Started by armstrom, September 08, 2009, 03:21:40 PM
QuoteI contacted Ken Kantor and asked him how they got the 200 Watt number and he answered:The 200W number is based on peak voltage. Other numbers we list, for more sustained signals, are based on a THD of under 10%. Just FYI, the >minimum< THD you will find on the LB, at any power level, is about 1%.200 Watts is the equivalent RMS power available for 100mS tone bursts from 250Hz to 2500Hz. The actual driver impedance is used in the calculation.I also asked about continuous power and got this answerThe answer is that it depends:there are sophisticated thermal limiting/SOA mechanisms built into the amp, that make testing it the way you suggest [using a 1kHz sine wave into a dummy load]not very straight forward. The longer the signal is applied, the lower the apparent "RMS" power will be. If you measure it within 0.5 seconds, you will see an unclipped RMS power approaching 130W. At the other end of things, the RMS will tend downward towards about 60W, steady-state.
QuoteVery interesting little fella