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Lab Gruppen FP 2600 Power Amplifier

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The FP 2600 Power Amplifier from Lab Gruppen incorporates the latest semiconductor technology now utilized in the ferrite Power (fP) amplifiers. This, together with Lab.Gruppen's proprietary copper co... Click To Read More About This Product

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The FP 2600 Power Amplifier from Lab Gruppen incorporates the latest semiconductor technology now utilized in the ferrite Power (fP) amplifiers. This, together with Lab.Gruppen's proprietary copper cooling system, Intercooler, enhances the 2 ohms capability. Two easily accessible dust filters on the front ensure a clean front-to-rear airflow. A new Bi-phase wiring scheme also increases the capacity of the switch mode 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 fP family functional in all situations from installation to high performance live sound systems:

Regulated switch mode power supply
The unique Lab.Gruppen switch-mode power supply technology offer a number of essential advantages that make it superior to other and seemingly similar power supply designs. The most important features are the regulated power supply and the extreme power efficiency. The regulated power supply easily deals with a very high variation in the AC mains voltage: it can drop by up to 20% below its nominal level”e.g. to 180 V instead of 230 V”without any problem. Perhaps even greater benefits result from the extreme efficiency of Lab.Gruppen amplifiers: only a fraction of the energy from the AC mains is turned into heat. A regulated power supply also presents some other sonic advantages, such as better cone control and the same fast response as a conventional power supply.

Multiple positions Gain switch
To meet the demands for a flexible gain structure in the system, Lab.Gruppen offers a multiple position gain switch. The maximum amplifier gain can be set to all industry standards: 20, 23, 26, 29, 32, 35, 38 and 41 dB.


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
2 x 430 watts @ 8 Ohms
2 x 840 watts @ 4 Ohms
2 x 1200 watts @ 2 Ohms
(Measured just below clip level, with both channels driven)
Compact design, 2U high
Low weight,8 kg (18 lbs)
MLS Switch: Lab.gruppen's unique power matching for different loads
Multiple positions gain switch
Easily accessable dust filters
Improved low-end power bandwidth
Link connector with XLR-type connector
Bridged mono outputs in one Speakon connector
Extruded front panel for increased stability
Ma output power 1) EIA EIA FTC
EIA at 1 kHz and 1% THD 20”20 kHz at 0.1% THD
MLS-switch ”3 dB 0 dB Full 0 dB Full
16 Ohms per channel 110 W 215 W 210 W
8 Ohms per channel 240 W 430 W 420 W
4 Ohms per channel 430 W 840 W 800 W
2 Ohms per channel 870 W 12002),15403) W 1175 W
16 Ohms bridged 480 W 860 W 840 W
8 Ohms bridged 870 W 1680 W 1600 W
4 Ohms bridged 1740 W 24002),30003) W 2350 W

Max output voltage
8 ohms load, MLS @ 0 dB 45 Vrms 59 Vrms
Peak voltage,no load 65 V 85 V

Distortion etc.
THD 20Hz-20kHz and 1W to full power 0.4 %
THD @ 1kHZ and ”1dB under clip 0.01 %
DIM 30 at ”3dB under clip 0.0608%

Hum and Noise <”110 dB

Channel separation @10kHz 70 dB

Output impedance 60 m Ohms

Slew Rate 60 V/s

Gain, selectable [dB] 20,23,26,29,32,35,38,41
Impedance 20 kohm
Common mode rejection 50 dB

Front Panel
Gain controls (2) channel A,B 31 pos detent
Clip Indicator (2) red LEDs
Output headroom indicators (10) green LEDs Fast peak”slow release
Temp Indicator (2) yellow LEDs 80 degree C at heatsink
Protect indicator (2) yellow LEDs >12 kHz at full power or shorted output
On Indicator (2) green LEDs DC rail voltage for channel A and B

Rear Panel
Input connectors (2) Neutrik Combo XLR type, 3 pin
and 1/4 "jack
Link connector (2) XLR type, 3 pin male
Output connectors (2) Neutrik 4-pole Speakon connectors
Clip limiter A and B On”Off(switchable)
MLS switch 0,”3 dB
Link-switch Ch.A”B

Power 230 V version 115 V version
Operation voltage 130 V”265 V AC 65 V”135 V AC
Minimum start voltage 175 V 85 V AC
Full output power at 4 ohms 180 V”265 V AC 90 V”130 V AC
Peak inrush current (Soft start limited) 5 A 5 A

Current Draw @ 4ohms
Quiescent power (no load) 1 Arms 2 Arms
1/8 offull power (”9 dB) 6 Arms 12 Arms
1/3 offull power (”5 dB) 9 Arms 18 Arms
At full power (0 dB) 16 Arms 22 Arms

Net Dimensions
mm 483 W x 88 H x 347 D
inch 19" W X 3.5" H x 13.7"D
Shipping Dimensions
mm 560 W x 180 H x 500 D
22" W x 7.1"H x 19.7 "D
Net 8kg (21.2lbs)
Shipping 11.6 kg (25.6 lbs)
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