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Parasound Model 7100 Surround Controller and Model 5250 Amplifier:
At A Glance: Model 7100 Surround Controller
Connections
These listings are based on the manufacturer's stated specs; the HT Labs box below indicates the gear's performance on our test bench.
Features
HT Labs Measures: Parasound 7100 Surround Controller
Analog frequency response in Stereo96 mode: –0.09 dB at 10 Hz; –0.04 dB at 20 Hz –0.09 dB at 20 kHz; –25.84 dB at 50 kHz Analog frequency response with signal processing: –0.10 dB at 10 Hz; –0.04 dB at 20 Hz –0.09 dB at 20 kHz; –25.86 dB at 50 kHz The above chart shows the frequency response of the left (aqua), center (green), LFE (red), and left surround (blue) channels at the preamp outputs of the Dolby Digital decoder. The left channel measures –0.02 decibels at 20 hertz and +0.06 dB at 20 kilohertz. The center channel measures –0.03 dB at 20 Hz and +0.06 dB at 20 kHz, and the left surround channel measures –0.03 dB at 20 Hz and +0.06 dB at 20 kHz. The LFE channel, normalized to the level at 40 Hz, is –0.06 dB at 20 Hz, reaches the upper –3dB point at 119 Hz, and reaches the upper –6dB point at 123 Hz. Response from the multichannel input to the main output measures –1.96 dB at 10 Hz, –0.70 dB at 20 Hz, –0.00 dB at 20 kHz, and –0.01 dB at 50 kHz. The analog THD+N is less than 0.043% at 1 kHz with a 100-millivolt input and the volume control set to 97. Crosstalk with a 100-mV input was –83.67 dB left to right and –86.09 dB right to left. The signal-to-noise ratio with a 100-mV input from 10 Hz to 24 kHz with "A" weighting was –111.17 dBrA.—MJP
Article Continues: At A Glance & HT Measures: 5250 »
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