POWER AMPLIFIER
KEY FEATURES:
4 ✕ 370 watts @ 8 Ω
4 ✕ 380 watts @ 4 Ω
4 ✕ 500 watts @ 2 Ω
(Measured just below clip level,
with all 4 channels driven)
◆ Compact design, 2U high
◆ Low weight, 8 kg (18 lbs)
◆ MLS™ Switch: Lab.gruppen’s
unique power matching for
different loads
NEW FEATURES:
◆ Easily accessible dust filters
◆ Improved low-end power
bandwidth
◆ Extruded front panel for
increased stability
fP 2400Q
The fP 2400Q is a lightweight and space-saving power amplifier, ideal for use in high
quality touring sound systems as well as in demanding permanent installations.
The fP 2400Q 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 fP 2400Q 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).
It also features Lab.gruppen’s unique power matching solution, the MLS switch, which
offers endless combinations for solving most of the problems related to different impedances
and maximum power capacities of loudspeakers.
The latest semiconductor technology is utilized in the new 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-torear airflow.
A new Bi-phase wiring scheme also increases the capacity of the switch mode power suppply. 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
Today there are many lightweight, switch-mode amplifiers in the market. However, the unique Lab.gruppen switch-mode power supply technology offers 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 (90 V) instead of 230 V (115 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.
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.
fP 2400Q
SPECIFICATIONS
Max output power 1)
EIA
EIA at 1 kHz and 1% THD
MLS-switch
–3 dB
16 Ω four channels
95 W
8 Ω four channels
200 W
4 Ω four channels
380 W
2 Ω four channels
5002), 6503) W
16 Ω bridged stereo
380 W
8 Ω bridged stereo
760 W
4 Ω bridged stereo
10002), 12803) W
Max output voltage
8 ohms load, MLS @ 0 dB
Peak voltage, no load
EIA
0 dB Full
200 W
370 W
5902), 7003) W
N/A
740 W
12002), 14003) W
N/A
40 Vrms
60 V
54 Vrms
81 V
Distortion etc.
THD 20 Hz–20 kHz and 1 W to full power
THD @ 1 kHZ and –1 dB under clip
DIM 30 at –3 dB under clip
Hum and Noise
0.07 %
0.02 %
0.008 %
<–107 dB
Channel separation @10 kHz
30 mΩ
Slew Rate
60 V/␮s
Inputs
Gain
Impedance
Common mode rejection
32 dB
20 kohm
50 dB
(4) channel A, B, C, D
Clip Indicator
Output headroom
indicators
–slow release
Protect indicator
(4) yellow LEDs
On Indicator
(4) green LEDs
230 V version
115 V version
130 V–265 V AC 65 V–135 V AC
175 V
85 V AC
200 V–265 V AC 100 V–130 V AC
5A
5A
2.8 Arms
12 Arms
18 Arms
32 Arms
483 (19˝) W ✕ 88 H ✕ 316D
19˝ W ✕ 3.5˝ H ✕ 12.4˝ D
31 positions
detent
Shipping Dimensions
mm
inch
560 W ✕ 180 H ✕ 500 D
22˝ W ✕ 7.1˝ H ✕ 19.7˝D
Fast peak
Weight
Net
Shipping
8.6 kg (19 lbs)
10.2 kg (22.5 lbs)
(4) red LEDs
(4 ✕ 2) green LEDs
Current Draw @ 4ohms&230V
Quiescent power (no load) 1.4 Arms
1/8 of full power (–9 dB) 6 Arms
1/3 of full power (–5 dB) 9 Arms
At full power (0 dB)
@1 kHz 1% THD
16 Arms
Net Dimensions
mm
inch
80°C at heatsink or
>12 kHz at full power
or shorted output
DC rail voltage for
channel A, B, C and D
Rear Panel
Input connectors
(4) Neutrik Combo XLR type, 3 pin
and 1/4˝ jack
Output connectors (4) Neutrik 4-pole Speakon® connectors
Switches:
Clip limiter A and B
MLS switch
Link-switches
Power
Operation voltage
Minimum start voltage
Full output power
at 4 ohms
Peak inrush current
(Soft start limited)
70 dB
Output impedance
Front Panel
Gain controls
FTC
20–20 kHz at 0.1% THD
0 dB Full
180 W
360 W
530 W
N/A
720 W
1000 W
N/A
On–Off (switchable)
0, –3 dB
A+B / B+C / C+D
Approvals
CE:
Emission
Immunity
Safety
ETL listed:
FCC:
EN 55 103-1, E3
EN 55 103-2, E3, with S/N below 1% at normal operation level4)
EN 60065, class I
Conforms to ANSI/UL STD 6500 and Certified to CAN/CSA E60065-00
Complies with Class B digital device, Part 15 of the FCC Rules.
NOTES:
1) Specifications measured with 230 V AC
2) Component tolerance dependent
3) Continuous power, one channel driven or peak power both channels driven
(Thermal protection may occur at high continuous power)
4) Normal operation level 1/8 of full power or –9 dB below clip level.
Lab.gruppen reserve the right to alter functions or the specification without prior
notice.
Lab.gruppen AB, Gullregnsvägen 16, SE-434 44 Kungsbacka, Sweden.
Tel +46 300 56 28 00 Fax +46 300 56 28 99 e-mail: info@labgruppen.com www.labgruppen.com
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