d&b audiotechnik D40 - Audio Power Output Measurement References

Technical specifications
*Audio power output – Measurement references:
All data is valid for 23 °C (73.4 °F) ambient temperature and
230 V AC/50 Hz mains supply.
The power rating of noise signals is defined as the maximum of the
instantaneous output power divided by a factor of two.
The power of burst signals refers to the power during the "on"
period.
The duration of the peak output of a sine wave signal is defined at
a drop of 0.5 dB/10% relative to the maximum output power.
EIA-426B noise
Crest factor Load Power rating Power average
12 dB 4 ohms
8 ohms
4 x 2400 W
4 x 2000 W
4 x 300 W
4 x 250 W
9 dB 4 ohms
8 ohms
4 x 1300 W
4 x 2000 W
4 x 325 W
4 x 500 W
6 dB 4 ohms
8 ohms
4 x 700 W
4 x 1150 W
4 x 375 W
4 x 575 W
1 kHz burst
On/off time Load Power
20 ms/0 dB
480 ms/–20 dB
4 ohms
8 ohms
4 x 1200 W
4 x 1150 W
200 ms/0 dB
600 ms/–20 dB
4 ohms
8 ohms
4 x 700 W
4 x 750 W
1 kHz sine wave
Channels used Load Max. output power Duration of max. output
1 4 ohms
8 ohms
1 x 2400 W
1 x 2000 W
110 ms
2000 ms
4 4 ohms
8 ohms
4 x 2400 W
4 x 2000 W
5 ms
4 ms
d&b D40 Reference manual 1.5 en 9