Yamaha Aventage CX-A5100 Surround Processor Review Test Bench

Test Bench

Audio Frequency response at preamp outputs of Dolby Digital decoder: Left (aqua): –0.01 dB @ 20 Hz, –0.39 dB @ 20 kHz. Center (green): –0.01 dB @ 20 Hz, –0.40 dB @ 20 kHz. Left Surround (red): –0.01 dB @ 20 Hz, –0.39 dB @ 20 kHz. LFE (purple): Normalized to level @ 40 Hz: +0.12 dB @ 20 Hz, upper –3 dB @ 96 Hz, upper –6 dB @ 117 Hz.

Analog frequency response in Pure Direct mode:
–0.04 dB at 10 Hz
–0.01 dB at 20 Hz
–0.33 dB at 20 kHz
–1.82 dB at 50 kHz

Analog frequency response with signal processing:
–0.54 dB at 10 Hz
–0.16 dB at 20 Hz
–0.57 dB at 20 kHz
–21.70 dB at 50 kHz

Response from multichannel input to main output: –0.04 dB @ 10 Hz, –0.01 dB @ 20 Hz, –0.02 dB @ 20 kHz, –0.09 dB @ 50 kHz. Analog THD+N: less than 0.008% at 1 kHz w 100-millivolt input and volume control set to –3. Crosstalk w 100-mV input: –93.82 dB left to right, –94.21 dB right to left. Signal-to-noise ratio w “A” weighting: –130.92 dBrA.—MJP

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