Advertisement
Efficiency is also assured, and in the
case of the LAB 2002 and the LAB 4000,
this is especially apparent; its power sup-
ply draws only 4 kW and yet it produces
2 1400 W. (In a conventional amplifier
this would yield only 2 650 W – nearly
3 kW are wasted as heat).
Another feature is that the storage
medium for the energy is the transformer
core. In all other topologies smoothing
capacitors are used on the primary side
of the switch transformer with limited
life as a result.
Minimum Load Switches (MLS™)
Thanks to the regulated SMPS, the
maximum power available for the
output stages can be adjusted without
increased heat dissipation or efficiency
loss. This allows users to match the
output power with the loudspeaker
impedance. MLS™ switches are available
on four SMPS models, the LAB 1200C,
LAB 1600, LAB 2002 and the LAB 4000.
Radio interference
Lab.Gruppen switch mode amplifiers
were the first with low enough emis-
sions, not to interfere with wireless
microphone systems. The LAB 1300C
was the first professional switch
mode amplifier to be approved to the
European EMC directive.
All products have also been approved
for immunity against electromagnetic
fields, high voltage flashes and radio
interference.
Graph showing the RF emission from the LAB 1300C.
Upper lines are the IEC-limits.
* Continuous power on one channel driven or
peak power on both channels driven.
(Thermal protection may occur at high
continuous power.)
** Not recommended selection.
(Overcurrent protection may accour.)
fi 1300C
Power specifications: stereo
EIA at 1 kHz and 1% THD
Cooling; Two proportional speed fans
Protection; Short circuit, DC, high temperature, turn on,
VHF, over and under voltage and clip limiters
Dimensions in mm (inch); 483 (19")W
Weight; 8 kg (18 lbs)
fi 1600
Power specifications: stereo
EIA at 1 kHz and 1% THD
Cooling; Two proportional speed fans
Protection; ALS™ short circuit protection, DC, high temperature, turn on,
VHF, over and under voltage and clip limiters
Dimensions in mm (inch); 483 (19")W
Weight; 8 kg (18 lbs)
fi 2002
Power specifications: stereo
EIA at 1 kHz and 1% THD
Cooling; Two proportional speed fans
Protection; Short circuit, DC, high temperature, turn on,
VHF, over and under voltage and clip limiters
Dimensions in mm (inch); 483 (19")W
Weight; 10 kg (22.1 lbs)
fi 4000
Power specifications: stereo
EIA at 1 kHz and 1% THD
Cooling; Two proportional speed fans
Protection; AFS (Adaptive Fuse Saver), short circuit, DC, high temperature, turn on,
VHF, over and under voltage and clip limiters
Dimensions in mm (inch); 483 (19")W
Weight; 10 kg (22.1 lbs)
8 ohms
4 ohms
350 W
650 W
88 (3.5")H
310 (12.2")D
MLS
8 ohms
4 ohms
4
430 W
840 W
2
230 W
450 W
88 (3.5")H
310 (12.2")D
MLS
8 ohms
4 ohms
0 dB
1100 W
1900 W*
–2 dB
650 W
1100 W
–4 dB
350 W
680 W
88 (3.5")H
347 (13.7")D
MLS
8 ohms
4 ohms
0 dB
1300 W
2100 W
– 2 dB
820 W
1600 W
– 4 dB
520 W
1000W
88 (3.5")H
347 (13.7")D
2 ohms
900 W
2 ohms
1540 W*
870 W
2 ohms
2900 W*
1400 W*
1200 W
2 ohms
3200 W*
2200 W
2000 W
Advertisement
