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FP 2400Q 4-Channel Power Amplifier

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Overview

Lab Gruppen amplifiers are engineered to amazing levels of sonic quality, performance, and reliability.

The fP 2400Q is a lightweight and space-saving 4-channel power amplifier, ideal for use in high quality touring sound systems as well as in demanding permanent installations. The fP 2400Q offers a diverse choice of applications, such as: multi-channel monitor systems, 4-channel reproduction, and compact amplification in active 2-, 3-, and 4-way systems.

The fP 2400Q makes possible the bridge connection of one or 2 of the 2 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 varying 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-ohm capacity. Two easily accessible dust filters on the front ensure a clean front-to-rear airflow. Additionally, 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.

Regulated switch mode power supply
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 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.

Sophisticated protection circuitry
ALS short circuit protection uses Adaptive Limiting System to permits very high peak currents while keeps the amplifier within safe operation area. DC protection circuitry 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. A clip limiter prevents severely clipped waveforms from reaching the loudspeakers, while maintaining full peak power.

Features

4 x 370 watts @ 8 Ohms
4 x 380 watts @ 4 Ohms
4 x 500 watts @ 2 Ohms
(Measured just below clip level, with both channels driven)
Compact design, 2U high
Low weight, 8.6 kg (19 lbs)
Intercooler cooling system with front-to-rear airflow
MLS Switch: Lab.gruppen's unique power matching for different loads
Easily accessable dust filters
Improved low-end power bandwidth
Extruded front panel for increased stability

Specs