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MAINS OPERATION & RESULTING POWER AMP TEMPERATURES
The following tables are useful in determining power supply and cabling requirements.
The power drawn from the mains network is converted into acoustic output to feed the connected
loudspeaker systems plus heat. The difference between drawn power and dispensed power is referred
to as leakage power or dissipation (P
d
). The amount of heat resulting from power dissipation might
remain inside of a rack-shelf and needs to be diverted using appropriate measures. The following table
is meant as auxiliary means for calculating temperatures inside of rack-shelf systems/cabinets and the
ventilation efforts necessary.
The column “Pd” lists the leakage power in relation to different operational states. The column “BTU/
hr” shows the dispensed heat amount per hour.
MAINS OPERATION & RESULTING TEMPERATURES
Xa 4000
U
mains
[V]
I
mains
[A]
P
mains
[W]
P
out
SUB+TOP
[W]
Pd
(5)
[W]
BTU/hr
(1)
idle 230V 1 80 - 80 273
Max. Output Power @ 8Ω
(1)
230V 10,6 1640 600+500 540 1840
Max. Output Power @ 4Ω
(1)
230V 18,2 3000 1100+900 1000 3410
1/3 Max. Output Power @ 4Ω
(1)
230V 10,3 1580 366+300 914 3120
1/8 Max. Output Power @ 4Ω
(1)
230V 4,5 610 137+113 360 1230
1/8 Max. Output Power @ 4Ω
(2)
230V 5,5 790 137+113 540 1840
1/8 Max. Output Power @ 4Ω
(2), (4)
254V 5,5 840 166+137 537 1830
Normal Mode (-10dB) @ 4Ω
(1)
230V 4,1 550 110+90 350 1190
Rated Output Power (0dB) @ 4Ω
(1)
230V 17,2 2800 1000+800 1000 3410
Alert (Alarm) Mode (-3dB) @ 4Ω
(1)
230V 12,3 1920 500+400 1020 3480
1/3 Max. Output Power @ 2Ω
(2)
230V 16,7 2720 600+533 1587 5420
1/8 Max. Output Power @ 2Ω
(1)
230V 7,2 1050 225+200 625 2130
1/8 Max. Output Power @ 2Ω
(2)
230V 8,8 1260 225+200 835 2850
(1)
Sine Signal Modulation (80Hz/1kHz)
(2)
Band-limited Pink Noise
(3)
1BTU = 1055.06J = 1055.06Ws
(4)
10% Mains Over Voltage
(5)
Pd = Leakage Power
The following factors allow direct proportional calculation of the power consumption for different mains
supply voltages:
100V = 2.3; 120V = 1.9; 220V = 1.05; 240V = 0.96
9