Denon | AVR-5805 | Denon AVR-5805 lab

®
Full lab results on the Denon AVR-5805 digital surround receiver, tested
for the May 2005 S&V. © 2005 by Hachette Filipacchi Media, U.S., Inc.
All rights reserved.
in the lab for Web
DOLBY DIGITAL PERFORMANCE
All data were obtained from various test DVDs
using 16-bit test signals containing dither,
which sets 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
–7.5. All level trims at zero except for
subwoofer-related tests, all speakers set to
“large,” subwoofer on. All are worst-case
figures where applicable.
PCM STEREO PERFORMANCE
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) .....185/310 W (22.7/24.9 dBW)
Distortion at reference level .............. 0.02%
Linearity error (at –90 dBFS) .............. 0.02 dB
Noise level (A-wtd) ............................ –75.7 dB
(with 96-kHz/24-bit signals, –90.5 dB)
Output at clipping (1 kHz into 8/4 ohms)
1 channel driven .... 205/344 W (23.1/25.4 dBW)
5 channels driven (8 ohms) ... 121 W (20.8 dBW)
Excess noise (with/without sine tone)
16-bit (EN16) ....................................+0.1/+0.1 dB
quasi-20-bit (EN20) ...................... +5.6/+5.4 dB
Distortion at 1 watt (THD+N, 1 kHz)
8/4 ohms .........................................0.02/0.03%
Noise modulation ................................. 0.2 dB
Noise level (A-wtd) ............................ –75.5 dB
Excess noise (with sine tone)
16-bit (EN16) .........................................+0.1 dB
Frequency response (see notes)
20 Hz to 20 kHz +0, –0.12 dB (with 96-kHz/24bit signals, 5 Hz to 42 kHz +0, –3 dB)
Frequency response
20 Hz to 20 kHz +0, –0.12 dB
BASS-MANAGEMENT
PERFORMANCE
Measured results obtained with Dolby Digital,
PCM stereo, and analog test signals.
MULTICHANNEL PERFORMANCE,
ANALOG INPUT
Reference input and output level is 200 mV;
volume setting for reference output level was –3.
Subwoofer-output frequency response
(crossover set to 80 Hz)
24 dB/octave above –6-dB rolloff point of 81 Hz
Distortion
(THD+N, 1 kHz, 8/4 ohms) ..........0.004/0.006%
High-pass-filter frequency response
(crossover set to 80 Hz)
12 dB/octave below –3-dB rolloff point of 80 Hz
Noise level (A-wtd) .......................... –101.3 dB
Frequency response
<10 Hz to 124 kHz +0, –3 dB
With one important anomaly, the Denon AVR5805 performed at or near historic levels
for A/V receivers: power, noise, and distortion measurements were all record-setters on
my test bench. The anomaly was frequency
response, which on first measurement rolled
off by 6 dB per octave below roughly 100
Hz in all modes and on all digital inputs.
Analog inputs were only affected when a DSP
surround mode was engaged, suggesting a
DSP error as the culprit. Denon later confirmed
an operating-software glitch that failed to
defeat the THX Boundary Compensation curve
Maximum unclipped subwoofer output
(trim at 0) .............................................. 9.9 volts
Subwoofer distortion
(from 6-channel, 30-Hz, 0-dBFS signal;
subwoofer trim set to 0) .......................... 0.05%
even for “large” speaker channels unless you
manually “uncheck” it on the setup menu.
Doing so returned response to within 0.1 dB
at 20 Hz. Denon assured us that the corrected
software will be carried by all subsequent
production units.
Bass management was provided for all
inputs, including multichannel analog, and for
all media, both multichannel and stereo. The
performance was consistent for all media. All
speaker channels can be set to “small,” and
speaker-distance compensation is available for
all main channels, including Zone 2.
— D.K.
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