Lab.gruppen iP 900 - Manual (Page 11)

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