Connections; Input Connections - Lab.gruppen iP Series IP 450 User Manual

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The chart below shows the heat power produced in watts, in kcal per hour, and also in BTU per hour.
iP 450
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:
105 watts / 250 watts= 42%.
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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
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
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.
To daisy chain amplifiers, use the screw-terminal (Phoenix connector), labeled Link, provided on each
channel. It is connected in parallel with the Neutrik® Combo jack on each input.
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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]
97
60
143
90
222
125
=
=
kcal / h
kcal / h
80
50
120
80
190
110
Figure 5. XLR balanced
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
=
=
BTU / h
BTU / h
330
200
490
310
760
430
NM
========================

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