AV Receiver Reviews

Five channels driven into 8-ohm loads: 0.1% distortion at 114.9 watts; 1% distortion at 125.0 watts

Analog frequency response in pure direct mode: –0.11 dB at 10 Hz; –0.03 dB at 20 Hz; –0.16 dB at 20 kHz; –0.89 dB at 50 kHz.

Analog frequency response with signal processing: –0.71 dB at 10 Hz; –0.20 dB at 20 Hz; –0.19 dB at 20 kHz; –24.96 dB at 50 kHz.

This graph shows that the AVR-3805's left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1% distortion at 132.2 watts and 1% distortion at 162.3 watts. Into 4 ohms, the amplifier reaches 0.1% distortion at 218.4 watts and 1% distortion at 243.0 watts.

Response from the multichannel input to the speaker output measures –0.06 dB at 10 Hz, –0.02 dB at 20 Hz, –0.15 dB at 20 kHz, and –0.89 dB at 50 kHz. THD+N from the amplifier was less than 0.010% 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 –81.80 dB left to right and –74.57 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 –100.45 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures –0.03 dB at 20 Hz and –0.22 dB at 20 kHz. The center channel measures –0.03 dB at 20 Hz and –0.22 dB at 20 kHz, and the left surround channel measures –0.02 dB at 20 Hz and –0.18 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is –0.00 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 110 Hz and the upper 6-dB down point at 117 Hz.—MJP