Test Bench for Shootout: Three Mid-Price A/V Receivers Page 3
DOLBY DIGITAL PERFORMANCE All data were obtained from various test DVDs using 16-bit dithered test signals, which set limits on measured distortion and noise performance. Reference input level is -20 dBFS, and reference output is 1 watt into 8 ohms. Volume setting for reference level was -7. All level trims were at zero, except for subwoofer-related tests; all speakers were set to "large," subwoofer on. All are worst-case figures where applicable.
Output at clipping (1 kHz into 8/4 ohms) 1 channel driven: 196/297* W (22.9/24.7* dBW) 5 channels driven (8 ohms): 121 W (20.8 dBW) 6 channels driven (8 ohms): 119 W (20.8 dBW) Distortion at 1 watt (THD+N, 1 kHz) 8/4 ohms: 0.02/0.03% Noise level (A-wtd): -75.7 dB Excess noise (with sine tone) 16-bit (EN16): +0.6 dB Frequency response: 20 Hz to 20 kHz +0.7, -0.1 dB
* Speaker-impedance setup switch set to 8-ohm position; 210 watts into 4 ohms with switch at 6-ohm position
MULTICHANNEL PERFORMANCE, ANALOG INPUT Reference input and output level is 200 mV; volume setting for reference output level was -18. Distortion (THD+N, 1 kHz, 8 ohms): 0.02% Noise level (A-wtd): -89.9 dB Frequency response: <10 Hz to 200 kHz +0, -1.8 dB
STEREO PERFORMANCE, DIGITAL INPUT Reference level is -20 dBFS; all level trims at zero. Volume setting for reference level was -3. Output at clipping (1 kHz, 8/4 ohms, both channels driven): 160/241 W (22.0/23.8 dBW) Distortion at reference level: 0.02% Linearity error (at -90 dBFS): 0 dB Noise level (A-wtd): -75.4 dB with 96-kHz/24-bit signals: -85.4 dB Excess noise (with/without sine tone) 16-bit (EN16): 0.35/0.25 dB quasi-20-bit (EN20): 8.4/9.4 dB Noise modulation: 0.2 dB Frequency response: 20 Hz to 20 kHz +0, -0.2 dB with 96-kHz/24-bit signals: 20 Hz to 43.1 kHz +0, -3 dB
* Speaker-impedance setup switch set to 8-ohm position; 197 watts into 4 ohms with switch at 6-ohm position
BASS-MANAGEMENT PERFORMANCE Measured results obtained with Dolby Digital test signals. Subwoofer-output frequency response (crossover set to 80 Hz): 24 dB/octave above -6-dB rolloff point of 80 Hz High-pass-filter frequency response (crossover set to 80 Hz): 12 dB/octave below -3-dB rolloff point of 80 Hz Maximum unclipped subwoofer output (trim at 0): 6.9 volts Subwoofer distortion (from 6-channel, 30-Hz, 0-dBFS signal; subwoofer trim set to 0): 0.04% Crossover consistency: bass crossover frequency and slope same for all signal formats that receive bass management Signal-format consistency: consistent for all applicable formats; bass management not available for multichannel analog signals Speaker size selection: all channels can be set to "small." Speaker-distance compensation: available for all main channels.
The Yamaha RX-V2600 delivered near-benchmark performance on every test, and literal benchmarks for linearity (0 error at -90 dB) and PCM signal-to-noise, which measured -75.7, the theoretical ideal for our dithered-silence test. Power was impressive for just about any common real-world speaker load, including all-channels power. The receiver shut down when confronted with high-output/low-impedance stresses with its impedance switch set to "6 Ohms," but did fine on the same loads with the switch "mis-set" to the 8-ohm position.