Lab.gruppen iP 1150Q - Manual (Page 11)

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 1150Q 8 ohms 307 235 260 200 1050 800
4 ohms 453 370 390 320 1550 1260
2 ohms 705 605 610 520 2410 2060
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
The efficiency can also be calculated, it being the output-power divided by the input-power:
267 watts / 720 watts= 37 %.
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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 (-)
Figure 4. XLR input connector Figure 5. XLR balanced
Within the Neutrik® Combojack there is a ¼”(6.3mm) phone jack, which is wired in parallel with the
XLR.
TIP HOT
RING COLD
SLEEVE SHIELD/GROUND
Figure 6. ¼” TRS plug
The input impedance is high enough (20 kohms
balanced) to allow ”daisy-chaining”, or multiple
parallel input connections. The headroom of the
input circuits is also high enough to accept the
maximum output level from virtually any low-level
signal source. Balanced signals are less sensitive to
AC hum and radio interference. The source
impedance should be less than 1 kohms to avoid
high frequency loss in long cables.
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