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Epos M22 Speaker System and Butler Audio TDB 5150 Amplifier:
HT Labs Measures: Butler Audio TDB 5150 Amplifier
All channels driven continuously into 8-ohm loads:
Frequency response:
This graph shows that the TDB 5150's left amplifier channel, with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 219.8 watts and 1 percent distortion at 250.5 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 347.0 watts and 1 percent distortion at 393.7 watts. An input level of 123.5 millivolts was required to produce an output of 2.83 volts into an 8-ohm load, indicating an overall gain of +27.22 decibels. THD+N from the amplifier was less than 0.075 percent at 1 kilohertz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was –102.63 dB left to right and –118.11 dB right to left. The signal-to-noise ratio with 2.83 volts driving an 8-ohm load from 10 hertz to 24 kHz with A weighting was –119.91 dBrA.—MJP
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