Page 5: The Denon AVR-1909 7.1 A/V Receiver On the Bench - Page 6 Secrets of Home Theater and High Fidelity

Home

Receivers

Denon AVR-1909 7.1 A/V Receiver - Page 5: The Denon AVR-1909 7.1 A/V Receiver On the Bench

Receivers

Denon AVR-1909 7.1 A/V Receiver - Page 5: The Denon AVR-1909 7.1 A/V Receiver On the Bench

Written by Kevin Lichterman

Sunday, 08 February 2009 16:00

Article Index
Denon AVR-1909 7.1 A/V Receiver
Page 2: Setup of the Denon AVR-1909 7.1 A/V Receiver
Page 3: The Denon AVR-1909 7.1 A/V Receiver Remote Control
Page 4: The Denon AVR-1909 7.1 A/V Receiver in Use
Page 5: Other Features of the Denon AVR-1909 7.1 A/V Receiver
Page 5: The Denon AVR-1909 7.1 A/V Receiver On the Bench
Page 6: Conclusions About the Denon AVR-1909 7.1 A/V Receiver
All Pages

Page 6 of 7

I tested the receiver with two channels driven. Distortion measurements were within an 80 kHz bandwidth.

At 20 volts into 8 ohms (50 watts RMS), IMD was 0.055%

The measured frequency response was 10 Hz - 100 kHz, - 2 dB, and was flat from 10 Khz - 20 kHz.

THD+N vs. Frequency is shown below for 8 ohms and 4 ohms. The 20 volt at 4 ohms graph line suggests that this receiver may not do very well with 4 ohm speakers (because distortion stays relatively high all along the graph line).

THD+N vs. Power Output is shown below for 8 ohms and 4 ohms. At 8 ohms, clipping (1% THD+N) occurred at 115 watts output, while at 4 ohms, clipping occurred at 140 watts output. There is not much difference in output between the two impedance loads, so I say again that this receiver should probably be limited to use with 8 ohm speakers.