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AudioControl Maestro M2 7.1 A/V Surround Sound Processor

Part IV

March, 2006

John E. Johnson, Jr.

 

At 10 kHz, analog input, THD+N measured 0.025%.

With DD, THD+N was 0.17%, using the 10 kHz test signal.

For 10 kHz and 11 kHz analog test signals, the A+B peak at - 91 dB, while the B-A peak at 1 kHz was at - 87 dB.

For DD, the A+B peak was at - 99 dB, and B-A at 1 kHz was at - 92 dB.

The measured frequency response, using an analog input, and Stereo Mode, was 20 Hz - 20 kHz ± 0.5 dB. The response rolled off sharply above 22 kHz.

The measured frequency response, using an analog input, and Direct Mode (bypasses all digital processing), was 20 Hz - 20 kHz ± 0.25 dB, and there was less noise. The response also extends to 45 kHz ± 1 dB.

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