fP 6400

POWER AMPLIFIERS

KEY FEATURES:

2 x 1300 watts @ 8

Ω

2 x 2300 watts @ 4

Ω

2 x 3200 watts @ 2

Ω

(Measured just below clip level, with both channels driven)

◆ Light weight and compact: only 10 kg (22 lbs), 2U high

◆ MLS™ Switch:

Lab.gruppen’s unique power matching for different loads

NEW FEATURES:

◆ Replaces the LAB 4000

◆ 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

◆ Extruded front panel for increased stability

◆ Bridged mono outputs in one SpeakOn connector fP 6400

The fP 6400 is a lightweight and space-saving power amplifier, ideal for use in high quality touring sound systems as well as in demanding permanent installations.

Heat and cooling are fundamental problems in extreme high power amplifiers such as the fP 6400. Already in 1990, Lab.gruppen patented a high efficiency amplifier, in fact an evolution of the Class D amplifier. Lab.gruppen

therefore call it Class TD. It obtains the same high efficiency as Class D, but avoids its drawbacks. Class D has a power-amplifier topology using Pulse

Width Modulation (PWM) to achieve high efficiency, but it needs a recovery filter between the output stage and the loudspeaker. Lab.gruppen’s Class TD amplifiers do not need this filter and this is one reason why the Lab.gruppen

Class TD obtains the same sonic quality as a traditional Class AB amplifier.

Besides the traditionally superb Lab.gruppen sonic performance, fP6400 offers a full line of important features:

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 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.

Sophisticated protection circuitry, combining:

– 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.

SPECIFICATIONS fP 6400

MAX OUTPUT POWER 1)

EIA at 1 kHz and 1% THD

MLS switch

16

Ω

per channel

8

Ω

per channel

4

Ω

per channel

2

Ω

per channel

16

Ω

bridged

8

Ω

bridged

4

Ω

bridged

Max output voltage

8 ohms load

Peak voltage, no load

Distortion etc.

THD 20Hz-20kHz and 1W to full power

THD @ 1kHZ and –1dB under clip

DIM 30 at –3dB under clip

Hum and Noise

Channel separation @10kHz

Output impedance

Slew Rate

Inputs

Gain, selectable [dB]

-5 dB

220 W

430 W

-4 dB

260 W

520 W

-2 dB

410 W

820 W

0 dB Full

650 W

1300 W

FTC 20-20kHz @0.1%THD

0 dB Full

640 W

1280 W

830 W 1000 W 1600 W 2300 W

1660 W 2000 W 2400, 3050 3) W 2900 2) , 3200

2200 W

3) W 2500 W

860 W 1040 W 1640 W 2600 W 2500 W

1660 W 2000 W 3200 W 4600 W

3400 W 4000 W 4800, 6100 3) W 5800 2) , 6400

4400 W

3) W 5000 W

62 Vrms 70 Vrms 85 Vrms

88 V 101 V 121 V

0,1 %

0,04 %

0,06 %

<-110 dB

70 dB

60 m

Ω

20 V/

µ s

20, 23, 26, 29,

32, 35, 38, 41

20 kohm

50 dB

104 Vrms

149 V

Impedance

Common mode rejection

Front Panel

Gain controls

Clip Indicator

Output headroom indicators

Temp Indicator

VHF indicator

On Indicator

AC Indicator

AFS Indicator

Rear Panel

Input connectors

Link connector

Output connectors

Switches

Clip limiter A and B

MLS switch

Link-switch

Power

Operation voltage

Minimum start voltage

Full output power at 4ohms

Peak inrush current (Soft start limited)

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

Net Dimensions mm (inch)

Shipping Dimensions mm (inch)

Net Weight

Shipping Weight

Approvals CE

(2) channel A, B

(2) red LEDs

(10) green LED’s

(2) yellow LEDs

(2) yellow LEDs

(2) green LEDs

(1) green LED

(1) green LED

(2) Neutrik Combo XLR type, 3 pin & 1/4” jack

(2) XLR type, 3 pin male

(2) Neutrik 4-pole Speakon connectors

On-Off (switchable)

0, -2, -4, -5dB

Ch.A-B

230 V version

130 V-265 V AC

175 V

180 V-265 V AC

5 A

31 pos detent

Fast peak –slow release

80

°

C at heatsink

>12kHz at full power

DC rail voltage for channel A and B

AC power present

Fuse saver activated

115 V version

65 V – 135 V AC

95 V AC

90 V – 130 V AC

5 A

1 Arms

6 Arms

14 Arms

20 Arms (AFS limited)

2 Arms

12 Arms

28 Arms

40 Arms (AFS limited)

483 (19”) W x 88 (3,5”) H x 347 (13,7”) D

560 (22”) W x 180 (7.1”) H x 500 (19.7”) D

10 kg (22lbs)

11.6 kg (25.6lbs)

Emission EN 55 103-1, E3

Immunity EN 55 103-2, E3, with S/N below 1% at normal operation level

Safety EN 60 065, class I

1) Specifications measured with 230 VAC

2) Component tolerance dependent 4) Normal operation level 1/8 of full power or –9dB below clip level.

4)

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 the specification 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: [email protected] www.labgruppen.se

2002-03 V1