Lab.gruppen iP Series IP 1350 User Manual page 11

MAX OUTPUT POWER
iP 1350 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.
Table 1.
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The heat power can be calculated as in the following example:
We consider a headroom of at least 5dB (1/3 of full power) and a 4 ohms load on an amplifier
producing 500 watts per channel. The 1/3 power per channel is accordingly 500 / 3 = 167 watts, and
total output 2 x 167 = 334 watts.
The power consumption according to the chart above is then 840 watts. This chart shows the active
power consumption of the amplifier with different loads and power levels.
The heat power produced is the difference between the power consumption and output power:
840 - 334 = 506 watts per amplifier.
The chart below shows the heat power produced in watts, in kcal per hour, and also in BTU per hour.
iP 1350 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.
The efficiency can also be calculated, it being the output-power divided by the input-power:
334 watts / 840 watts= 40%.
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XLR Input connectors are active balanced and wired according to the IEC 268, that is pin 2 hot, and wired
in the following way:
PIN 1 GROUND/SHIELD
PIN 2 HOT (+)
PIN 3 COLD (-)
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Power
[W]
2x 300
2x 500
2x 700
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]
295 250
507 415
863 665
= =
MAINS INPUT POWER
1/3 Power 1/8 Power
note 1 note 2
495 325
840 540
1330 840
kcal / h kcal / h
250 220
440 360
740 570
= =
Idle
72
72
72
BTU / h BTU / h
1010 850
1730 1420
2950 2270
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NM