fi 300
Power specifications: stereo
8 ohms
4 ohms
2 ohms
EIA at 1 kHz and 1% THD
100 W
150 W
160 W
◆
Cooling; Conventional (no fan)
◆
Protection; Short circuit, DC, high temperature, turn on, VHF and clip limiters
◆
Dimensions in mm (inch); 483 (19")W
2
44 (1.75")H
2
280 (11")D
◆
Weight; 7.5 kg (17 lbs)
fi 500
Power specifications: stereo
8 ohms
4 ohms
2 ohms
EIA at 1 kHz and 1% THD
180 W
290 W
320 W
◆
Cooling; One proportional speed fan
◆
Protection; Short circuit, DC, high temperature, VHF and clip limiters
◆
THX version; LAB 500T
◆
Dimensions in mm (inch); 483 (19")W
2
88 (3.5")H
2
265 (10.5")D
◆
Weight; 11 kg (24 lbs)
fi 1000
Power specifications: stereo
8 ohms
4 ohms
2 ohms
EIA at 1 kHz and 1% THD
380 W
600 W
700 W
◆
Cooling; Two proportional speed fans
◆
Protection; Short circuit, DC, high temperature, VHF and clip limiters
◆
THX version; LAB 1000T
◆
Dimensions in mm (inch); 483 (19")W
2
88 (3.5")H
2
355 (14")D
◆
Weight; 18 kg (40 lbs)
fi 1200C
Power specifications: 4 channel
MLS
8 ohms
4 ohms
EIA at 1 kHz and 1% THD
8
370 W
650 W*
4
200 W
380 W
◆
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
2
88 (3.5")H
2
335 (13.2")D
◆
Weight; 8.7 kg (19 lbs)
Efficient cooling system with turbulent air flow.
Lab.Gruppen force cooled amplifiers
have front to rear cooling. The main rea-
son for this is because there is usually
cooler air outside the rack than inside or
behind (usually a closed rack with mini-
mal venting because of cables).
Lab.gruppen
– the company and the products
Lab.gruppen currently produce
eight power amplifier models of which
five utilize switch mode power supplies
(SMPS) and three utilize conventional
power supplies. These models range
from 2
3
150 W to 2
3
2400 W.
Whilst many competitors strive to
produce as many models as possible it
should be noted that since 1987 none of
our SMPS products have been “discon-
tinued”. Products are often improved
allowing existing users to upgrade in
many cases.
An area of pride is safety compati-
bility – all of the products meet the
European safety approval IEC-65, and
the switch mode products meet the
European EMC rules. During the first
quarter of 1995 most products were
CE approved.
For installations in cinemas there are
two variants, which are THX approved.
Cooling system
Lab.Gruppen fan cooled amplifiers
utilize a special copper cooling system
called Intercooler
®
(copper conducts
heat twice as good as aluminium).
Output devices (always bi-polar) are
mounted directly on a compact heat-
sink that produces turbulent airflow for
maximum heat dissipation. The airflow
in front of the heatsink is maintained by
a pressure chamber and two propor-
tional speed fans. A major advantage of
the Intercooler® is that there are only a
few degrees difference between all the
devices. Compare this to a conventional
cooling tunnel where there can be varian-
ces of up to 40 degrees between devices.
With such a difference, matching com-
plementary devices makes no sense!