AudioControl Concert AVR-1 A/V Receiver HT Labs Measures

HT Labs Measures

Five channels driven continuously into 8-ohm loads:
0.1% distortion at 95.7 watts
1% distortion at 105.8 watts

Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 81.0 watts
1% distortion at 97.6 watts

Analog frequency response in Direct mode:
–0.02 dB at 10 Hz
+0.00 dB at 20 Hz
+0.02 dB at 20 kHz
–2.93 dB at 50 kHz

Analog frequency response with stereo signal processing:
–0.48 dB at 10 Hz
–0.13 dB at 20 Hz
–0.48 dB at 20 kHz
–34.53 dB at 50 kHz

This graph shows that the AVR-1’s left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 101.8 watts and 1 percent distortion at 119.7 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 176.4 watts and 1 percent distortion at 197.8 watts.

Response from the multichannel input to the speaker output measures –0.02 decibels at 10 hertz, +0.00 dB at 20 Hz, –0.02 dB at 20 kilohertz, and –2.92 dB at 50 kHz. THD+N from the CD input to the speaker output was less than 0.013 percent at 1 kHz when driving 2.83 volts into an 8-ohm load. Crosstalk at 1 kHz driving 2.83 volts into an 8-ohm load was –77.46 dB left to right and –75.00 dB right to left. The signal-to-noise ratio with 2.83 volts driving an 8-ohm load from 10 Hz to 24 kHz with “A” weighting was –99.24 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures +0.01 dB at 20 Hz and –0.30 dB at 20 kHz. The center channel measures +0.00 dB at 20 Hz and –0.26 dB at 20 kHz, and the left surround channel measures +0.00 dB at 20 Hz and –0.23 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is +0.23 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 82 Hz and the upper 6-dB down point at 107 Hz.—MJP

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