AV Receiver Reviews

Two channels driven continuously into 8-ohm loads:
0.1% distortion at 124.3 watts
1% distortion at 143.2 watts

Five channels driven continuously into 8-ohm loads:
0.1% distortion at 89.5 watts
1% distortion at 111.4 watts

Seven channels driven continuously into 8-ohm loads:
0.1% distortion at 70.5 watts
1% distortion at 83.8 watts

Analog frequency response in Pure Direct mode:
–0.15 dB at 10 Hz
–0.04 dB at 20 Hz
–0.07 dB at 20 kHz
–3.27 dB at 50 kHz

Analog frequency response with signal processing:
–0.46 dB at 10 Hz
–0.16 dB at 20 Hz
–0.37 dB at 20 kHz
–59.26 dB at 50 kHz

This graph shows that the SR7007’s left channel, from CD input to speaker output with two channels driving 8-ohm loads, reaches 0.1 percent distortion at 124.3 watts and 1 percent distortion at 143.2 watts. Into 4 ohms, the amplifier reaches 0.1 percent distortion at 205.1 watts and 1 percent distortion at 225.4 watts.

Response from the multichan- nel input to the speaker output measures –0.15 decibels at 10 hertz, –0.04 dB at 20 Hz, –0.10 dB at 20 kilohertz, and –3.33 dB at 50 kHz. THD+N from the CD input to the speaker output was less than 0.010 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 –76.65 dB left to right and –76.77 dB right to left. The signal-to-noise ratio with an 8-ohm load from 10 Hz to 24 kHz with “A” weighting was –98.75 dBrA.

From the Dolby Digital input to the loudspeaker output, the left channel measures –0.10 dB at 20 Hz and –0.28 dB at 20 kHz. The center channel measures –0.10 dB at 20 Hz and –0.28 dB at 20 kHz, and the left surround channel measures –0.10 dB at 20 Hz and –0.21 dB at 20 kHz. From the Dolby Digital input to the line-level output, the LFE channel is –0.02 dB at 20 Hz when referenced to the level at 40 Hz and reaches the upper 3-dB down point at 118 Hz and the upper 6-dB down point at 121 Hz.—MJP

Video Test Bench
The Marantz passed all of our standard tests with only one minor hiccup. In the SD tests (480i input), the picture initially flickered off every few seconds. After a minute or so the flickering stopped and did not recur.—TJN