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Mains Operation
The following tables provide a useful aid in determining power supply and cabling requirements. Column
The following tables provide a useful aid in determining power supply and cabling requirements. Column
The following tables provide a useful aid in determining power supply and cabling requirements. Column
"1/8 max. output power into 4 ohms
were measured with the power amplifi er being operated at maximum output and a Pink Noise signal
according to EN62368 applied at the input, which approximately represents the strain of an audio signal
driving the power amp at maximum modulation.
Temperatures inside of the power amplifi er
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 a rack-shelf system/cabinet and the
ventilation efforts necessary.
The column "P D " lists the leakage power in relation to different operational states. The column "BTU/hr"
shows the dispensed heat amount per hour.
PA2450L
idle
Max. output power into 8ohms
Max. output power into 4ohms
1/3 max. output power into 4ohms
1/8 max. output power into 4ohms
1/8 max. output power into 4ohms
1/8 max. output power into 4ohms
Normal Mode (-10dB) into 4ohms
Rated output power (0dB, rated) into 4ohms
Alert-Mode (-3dB) into 4ohms
PA4150L
idle
Max. output power into 8ohms
Max. output power into 4ohms
1/3 max. output power into 4ohms
1/8 max. output power into 4ohms
1/8 max. output power into 4ohms
1/8 max. output power into 4ohms
Normal Mode (-10dB) into 4ohms
Rated output power (0dB, rated) into 4ohms
Alert-Mode (-3dB) into 4ohms
(1)
Sine wave 1kHz
(2)
Pink noise acc. to EN 62368
(3)
1BTU = 1055.06J = 1055.06Ws
(4)
10% mains over voltage
(5)
P D = Power dissipation
The following factors allow direct proportional calculation of the mains current (
supply voltages: 100V = 2,3; 120V = 1,9; 220V = 1,05; 240V = 0,96
MAINS OPERATION & RESULTING TEMPERATURE
(2)
(2)
" states the values to be used for normal operation. These results
(1)
(1)
(1)
(1)
(2)
(2) (4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2) (4)
(1)
(1)
(1)
U mains
I mains
P mains
[V]
[A]
[W]
230
0,2
28
230
5,4
923
230
8,8
1605
230
5,6
953
230
3,7
598
230
3,2
530
253
3,6
629
230
3,2
550
230
8,1
1482
230
6,1
1065
U mains
I mains
P mains
[V]
[A]
[W]
230
0,4
54,7
230
3,9
653
230
6,3
1126
230
4,0
665
230
2,7
428
230
2,4
385
253
2,6
450
230
2,4
385
230
6,1
1080
230
4,6
790
9
P out
P D
BTU/
[W]
[W]
hr
(3)
0
28
96
2x300
323
1102
2x480
645
2201
2x160
633
2160
2x60
478
1631
2x60
410
1399
2x73
484
1651
2x48
454
1549
2x450
582
1986
2x225
615
2098
P out
P D
BTU/
[W]
[W]
hr
(3)
0
55
187
4x100
253
863
4x160
486
1658
4x53
452
1541
4x20
348
1187
4x20
305
1041
4x24
353
1205
4x16
321
1095
4x150
490
1638
4x75
490
1672
for different mains
I mains)
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