d&b audiotechnik Q Series, Руководство пользователя

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d&b Q-Series 31
The D6 and D12 amplifiers
power consumption and power loss
Signal waveform CF Duty P
out
[W]
P
in
[W]
P
loss
[W] I
in
[A] U
in
[V]
1560 360 6.8 230
Sine wave 1.4 1/1 1200 1645 445 14.3 115
1715 515 17.2 100
Highly 520 120 2.3 230
compressed 2.4 1/3 400 550 150 4.8 115
music
1
570 170 5.7 100
Music with 215 65 1.0 230
low dynamic 4.0 1/8 150 220 70 2.0 115
range 220 70 2.2 100
Key:
CF: Crest factor, Duty: Duty cycle, P
out
[W]: Max. average output power (sum of both channels), P
in
[W]: Input power (effective power)
P
loss
:
Power loss (thermal power),
I
in
[A]:
Resulting current,
U
in
[V]:
Mains voltage
D6 Power balance
Signal waveform CF Duty P
out
[W]
P
in
[W]
P
loss
[W] I
in
[A] U
in
[V]
20.6
2
230
Sine wave 1.4 1/1 2400 3480 1080 41.2
2
115
47.4
2
100
Highly 9.2 230
compressed 2.4 1/3 800 1230 430 18.4
2
115
music
1
20.2
2
100
Music with 5.3 230
low dynamic 4.0 1/8 400 640 240 10.6 115
range 11.2 100
D12 Power balance
Mains supply Maximum number
D6 D12
230 V/16 A 4 2
115 /100 V/15 A 2 1
D6 and D12 power consumption and power loss
The power required from the mains supply and the waste heat
produced by the amplifier power loss vary depending on the load
impedance and the signal levels and characteristics (e.g. speech,
music). In practice, the theoretical peak power consumption of a
system will only be sustained for a short period of time. Basing
mains current and air conditioning plant requirements on the
peak power consumption of the sound system would result in a
generously overspecified installation. The key factor in power
consumption calculations is the crest factor of the music or speech
signal - the ratio of peak to sustainable RMS voltage of the
signal. The table below gives power figures for various types of
signal waveforms.
Mains supply
Maximum number of devices per phase conductor when full
output power is required:
In the USA and Japan we recommend the operation over two
phase conductors (phase to phase – 240 /200 V) or the use of
mains leads with a much higher cross section.
1
Maximum practicable operation
2
Only in conjunction with appropriate mains power supply installation