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Product 487160

Lab Gruppen FP 6400 Power Amplifier   

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The fp 6400 incorporates Lab Gruppen's Class TD high efficiency amplifier design, which eliminates the heat and cooling problems found in other extre...Click To Read More About This Product

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

The fp 6400 incorporates Lab Gruppen's Class TD high efficiency amplifier design, which eliminates the heat and cooling problems found in other extreme high power amplifiers. The Class TD amplifiers maintain the same sonic quality as a traditional Class AB amplifiers. Besides the traditionally superb Lab.gruppen sonic performance, FP6400 offers a full line of important features:

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.

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.

  • 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 1300 watts @ 8 Ohms
  • 2 x 2300 watts @ 4 Ohms
  • 2 x 3200 watts @ 2 Ohms
  • (Measured just below clip level, with both channels driven)
  • Compact design, 2U high
  • Low weight,10 kg (22 lbs)
  • MLS Switch:Lab.gruppen's unique power matching for different loads
  • Multiple positions gain switch
  • Intercooler cooling system with front-to-rear airflow and easily accessible 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

FP 6400 Power Amplifier

  • Max output power 1) EIA EIA EIA EIA FTC
    EIA at 1 kHz and 1% THD 20”20 kHz at 0.1% THD
    MLS-switch ”5 dB ”4 dB ”2 dB 0 dB Full 0 dB Full
    16 Ohms per channel 220 W 260 W 410 W 650 W 640 W
    8 Ohms per channel 430 W 520 W 820 W 1300 W 1280 W
    4 Ohms per channel 830 W 1000 W 1600 W 2300 W 2200W
    2 Ohms per channel 1660 W 2000 W 2400,30503) W 29002),32003) W 2500 W
    16 Ohms bridged 860 W 1040 W 1640 W 2600 W 2500 W
    8 Ohms bridged 1660 W 2000 W 3200 W 4600 W 4400 W
    4 Ohms bridged 3400 W 4000 W 4800,61003) W 58002),64003) W 5000 W

    Max output voltage
    8 ohms load 62 Vrms 70 Vrms 85 Vrms 104 Vrms
    Peak voltage,no load 88 V 101 V 121 V 149 V

    Distortion etc.
    THD 20Hz-20kHz and 1W to full power 0.1 %
    THD @ 1kHZ and ”1dB under clip 0.04 %
    DIM 30 at ”3dB under clip 0.06 %
    Hum and Noise <”110 dB
    Channel separation @10kHz 70 dB
    Output impedance 60 m_
    Slew Rate 20 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 80C at heatsink
    VHF indicator (2) yellow LEDs >12 kHz at full power
    On Indicator (2) green LEDs DC rail voltage for
    channel A and B
    AC Indicator (1) green LED AC power present
    AFS Indicator (1) green LED Fuse saver activated

    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,”2,”4,”5 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 4ohms 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) 14 Arms 28 Arms
    At full power (0 dB) 20 Arms 40 Arms
    @1 kHz 1% THD (AFS limited) (AFS limited)
    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 10 kg (22 lbs)
    Shipping 11.6 kg (25.6 lbs)

Review Snapshot

by PowerReviews

(based on 1 review)

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Reviewed by 1 customer

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Great Bass Amp

By Glassman

from Dallas, texas

Used this amp on subs at a Festival in Florida, in the summer. I paired them with EAW SB1000 subs, they sound great, hold up to the Florida heat and well as their own. These are about the durable amp on the market right now. Bass is smooth with these, especially playing reggae. They are worth the price. Get some!!

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