iP 1150Q
4 x 130 watts @ 8 Ω
4 x 200 watts @ 4 Ω
4 x 270 watts @ 2 Ω
(Measured just below clip level,
with all channels driven)
◆ Compact design:
2U high
◆ Intercooler® cooling
system with front-to-rear
◆ Easily accessible dust filter
◆ Improved low-end power
◆ Neutrik Combo jack
◆ Bridged mono outputs in
one SpeakOn connector
The iP 1150Q is a space-saving four channel power amplifier, ideal
for use in installations as well as in cost-effective live sound
The iP 1150Q offers a choice of applications, such as in multi-channel monitor systems, four-channel reproduction and compact amplification in active
2-, 3-, and 4-way systems.
The iP 1150Q gives the possibility to bridge connect one or two of the two
pairs of channels (channel A and B and/or channel C and D).
The Iron Power (iP) family of power amplifiers is the new compact and
versatile line of professional power amplifiers with classic toroidal iron transformers. To achieve a compact design, the latest semiconductor technology is
utilized. This, together with Lab.gruppen’s proprietary copper cooling system, Intercooler®, enhances the 2 ohms capacity. A easily accessible dust filter
on the front ensure a clean front-to-rear airflow.
A new Bi-phase wiring scheme also increases the capacity of the power
supply. This extends the power bandwidth in the low end.
Besides the traditionally superb Lab.gruppen sonic performance, there is a
full line of features to make the iP family functional in all situations from
installation to cost-effective live sound systems:
Versatile input connection
With the Neutrik Combo-jack we offer both the professional XLR-type
standard and the semi-pro 1/4 ” TRS phono-jacks.
Soft Start
Toroidal transformers require a huge amount of start current to build up a
magnetic flux when the amplifier is switched on. Therefore Lab.gruppen have
included a soft start circuit to minimize the risk of blowing the wall fuse and
to reduce flickering in the lighting.
Sophisticated protection circuitry, combining:
– ALS™ short circuit protection; the Adaptive Limiting System permits very
high peak currents, but keeps the amplifier within the Safe Operation Area.
– DC protection; protects against infrasonic signals
– VHF protection; protects the loudspeakers against strong very high
frequency non-musical signals above the audible range.
– Thermal protection; prevents the amplifier from being overheated. The
protection indicators on the front panel are switched on, as a warning, before
the protection process is initiated.
– AC protection; shuts down the power supply if the line voltage is outside
the operating voltage.
– Clip limiter; prevents severely clipped waveforms from reaching the
loudspeakers, whilst maintaining full peak power.
8 Ω four channels
4 Ω four channels
2 Ω four channels
8 Ω bridged stereo
4 Ω bridged stereo
EIA at 1 kHz and 1% THD
130 W
200 W
270 W2)
400 W
540 W2)
Max output voltage
8 ohms load
Peak voltage, no load
32 Vrms
51 V
Distortion etc.
THD 20Hz-20kHz
and 1W to full power
THD @ 1kHZ and –1dB
under clip
DIM 30 at –3dB under clip
FTC 20-20kHz @0.1%THD
120 W
180 W
245 2) W
360 W
490 2) W
0,05 %
0,01 %
0,008 %
Hum and Noise
Channel separation @10kHz
Output impedance
Slew Rate
<-105 dB
70 dB
30 mΩ
30 V/µs
Common mode rejection
32 dB
20 kohm
50 dB
Front Panel
Gain controls
Protect indicator
Clip Indicator
Signal present indicator
On Indicator
(4) channel A, B, C and D
(4) yellow LEDs
(4) red LEDs
(4) green LEDs
(4) green LEDs
31 positions detent
80°C at heatsink or >12kHz at full power or shorted output
Fast peak – slow release
-40 dB below full output
DC rail voltage for channel A, B, C and D
Rear Panel
Input connectors
Output connectors
Clip limiter A and B
On-Off (switchable)
A+B / B+C / C+D
Operation voltage
Minimum start voltage
Full output power at 4ohms
Peak inrush current (Soft start limited)
230 V version
130 V-265 V AC
180 V
230 V AC
10 A
115 V version
65 V – 135 V AC
90 V AC
115 V AC
Current Draw @ 4ohms&230V
Quiescent power (no load)
1/8 of full power (-9dB)
1/3 of full power (-5dB)
At full power (0 dB) @1 kHz 1% THD
0.6 Arms
2.9 Arms
4.5 Arms
7.9 Arms
1.2 Arms
6 Arms
9 Arms
16 Arms
Net Dimensions mm (inch)
Shipping Dimensions mm (inch)
Net Weight
Shipping Weight
483 (19”) W x 88 (3,5”) H x 325 (12.8”) D
560 (22”) W x 180 (7.1”) H x 500 (19.7”) D
13.2 kg (29 lbs)
14.8 kg (32.5 lbs)
(4) Neutrik Combo XLR type, 3 pin & 1/4” jack
(2) Neutrik 4-pole Speakon connectors
Emission EN 55 103-1, E3
Immunity EN 55 103-2, E3, with S/N below 1% at normal operation level 4)
EN 60 065, class I
1) Specifications measured with 230 VAC
4) Normal operation level 1/8 of full power or –9dB below clip level.
2) Component tolerance dependent
3) Continuous power, one channel driven or peak power both channels driven
(Thermal protection may occur at high continuous power)
LAB. GRUPPEN reserve the right to alter functions or specifications without prior notice.
Lab.gruppen AB, Gullregnsvägen 16, S-434 44 Kungsbacka, Sweden.
Tel. +46 300 168 23. Fax +46 300 142 46. e-mail: info@labgruppen.se www.labgruppen.se
2002-03 V1