Lab.gruppen iP Series IP 900 User Manual page 11

MAX OUTPUT POWER
iP 900 8 ohms
4 ohms
2 ohms
note 1 Average power with music as program source. The amplifier driven to clip level.
note 2 Normal music power with 9dB headroom, IEC standard power rating.
T able 1.
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The heat power can b e calculated as in the following example:
We consider a headroom of at least 5dB (1/3 of full power) and a
producing 320 watts per channel. The 1/3 power per channel is accordingly 320 / 3 = 106.5 watts, and
total output 2 x 106.5 = 213 watts.
The power consumption according
power consumption of the amplifier with different loads and power levels.
T he heat power produced is the difference between the power consumption and output power:
570 - 213 = 357 watts per amplifier.
The chart below shows the heat powe
iP 900 8 ohms
4 ohms
2 ohms
note 1 Average power with music as program source. The amplifier driven to clip level.
note 2 Normal music power with 9dB headroom, IEC standard power rating.
T he efficiency can also be calculated, it being the output-power divided by the input-power:
213 watts / 570 watts= 37%.
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XLR Input connectors are ac
in the following way:
P IN 1 GROUND/SHIELD
PIN 2 HOT (+)
PIN 3 COLD (-)
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Power
[W]
2x 200
2x 320
2x 470
to the chart above is then 570 watts. This chart shows the active
r produced in watts, in kcal per hour, and also in BTU per hour.
HEAT POWER
1/3 Power(1)1/8 Power (2) 1/3 Power(1) 1/8 Power (2)1/3 Power(1)1/8 Power (2)
[W] [W]
212 185
357 290
617 468
tive balanced and wired according to the IEC 268, that is pin 2 hot, and wired
= =
MAINS INPUT POWER
1/3 Power 1/8 Power
note 1 note 2
345 235
570 370
930 585
4 ohms load on an amplifier
kcal / h kcal / h
180 160
310 250
530 400
=
Idle
60
60
60
BTU / h BTU / h
720
1220
2110
= ========================
630
990
1600
NM