Generator Operation/Ups Requirements; Power Amplifiers - D&B D80 Manual

Maximum cable length for 5 % voltage drop at 3600 W mains power draw
Cable cross section 100 V
2 Not permitted
1.3 mm - AWG 16
Not permitted
1.5 mm 2
Not permitted
2.1 mm 2 - AWG 14
2 Not permitted
2.5 mm
2 12 m/39.5 ft
3.3 mm - AWG 12
15 m/50 ft
4.0 mm 2
19 m/62 ft
2
5.3 mm - AWG 10
2 22 m/72 ft
6.0 mm
31 m/101 ft
8.4 mm 2 - AWG 8
d&b D80 Manual 1.8 en
120 V 208 V
Not permitted 21 m/69 ft
Not permitted 24 m/79 ft
Not permitted 33 m/108 ft
Not permitted 40 m/131 ft
18 m/60 ft 53 m/174 ft
21 m/69 ft 63 m/206.5 ft
28 m/92 ft 83 m/272 ft
32 m/105 ft 95 m/312 ft
44 m/144 ft 133 m/436 ft

12.1.6. Generator operation/UPS requirements

To operate the amplifier using a mains generator or uninterruptible
power supply (UPS), observe the following:
– With the D80 amplifier the apparent power figure (VA value)
is about the same as the effective power figure (W value).
– Use a generator or UPS that can deliver the maximum power
required by the entire system. Assume a short time power
draw of 7 kVA per D80. This is particularly important when
using a UPS without dedicated short-time overload capability.
– Run the generator or UPS at 220 to 240 V, if available. 50 or
60 Hz is not an issue.

12.2. Power amplifiers

The power amplifiers fitted to the D80 utilize Class D technology
similar to a switch mode power supply. Compared to the known
linear amplifier concept (Class A, AB, G or H), Class D power
amplifiers produce less heat and allow for a compact and light-
weight design.
While supplying very high maximum output swing, it maintains high
efficiency with any kind of signal and load and runs as cool as
possible. Channels share the same power supply and are thermally
coupled to provide even higher average power figures when
unevenly loaded. TOP/SUB setups and active cardioid subwoofers
are cases of typical use. A sophisticated circuit design decreases
the impact of the load on the amplifier performance and enables a
well defined sound reproduction. A comprehensive set of
protection features individually prevents each channel from
overload and/or damage/defect. Channels that are not affected
will continue to operate, if safely possible.
230 V
25 m/82 ft
29 m/95 ft
40 m/131 ft
49 m/161 ft
64 m/210 ft
78 m/256 ft
102 m/334.5 ft
116 m/380.5 ft
162 m/531.5 ft
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