Lab.gruppen LAB 1000 User Manual

thanks to a horizontal pressure chamber in front of it,
(in a conventional tunnel design the end of the heat
sink opposite to the fan invariably gets hotter than
that directly in front of the fan). When cool air hits
the geometric fins of the Intercooler
TM
, turbulence is
produced thereby enabling efficient cooling.
Safety approvals
LAB.GRUPPEN amplifiers are designed to meet the
IEC65, a stringent electrical safety approval from the
International Electro-technical Commission. The
IEC65 is recognized world-wide with most countries
having an equivalent.
EMC approvals
EMC stands for Electro Magnetic Compatibility. This
implies that the equipment should have low emission
of radio frequencies, directly as electromagnetic fields
in the air, and as conducted from the cables from and
to the unit. The unit should also be able to handle
electromagnetic fields, high voltage flashes, and radio
interference, coming into the unit via the air or cables.
Emission
The regulation now cover the frequency range from
150 kHz to 300 MHz. The maximum level radiated
from a unit has to be below 100 µV, ( 0.0001 V ).
Immunity
The equipment should be able to handle three
different types of interference:
• Electrostatic discharges up to 8 kV, hitting the
chassis or cables.
• Transients and bursts up to 1 kV, conducted
through the cables to the unit.
• Electromagnetic fields up to 3 V/m, radiated on
the unit and the cables in the frequency range of
27 - 500 MHz.
We have extended the tests in two cases and chosen a
standard used for heavy industrial situations. First, we
have tested conducted disturbances in the frequency
range 150 kHz - 80 MHz, by injecting 3V amplitude
modulated (80%) signals into all the cables ( inputs,
outputs and mains ). This covers noise from AM
transmitters, which are still in use in some areas.
Secondly, we have extended the range for
electromagnetic fields to 26 - 1000 MHz, with a level
of 6 V/m and 80% AM modulated.
In the range 895 - 905 MHz, we test with a field
strength of 35 V/m and 100% pulse modulation.
This
emulate the signals from a mobile phone close to the
unit. In all cases the noise plus distortion is below 1%,
at normal operation level, ( normal operation level is
1/8 of full power or -9 dB under clip point according
to IEC 65).
EMC-declaration
This audio power amplifier conforms with the
EMC-directive 89/336/EEC and relates to the
following standards:
EN 55013:1990
EN 50 082-1
IEC 801-2, ed.1(1984)
IEC 801-3, ed.1(1988)
IEC 801-4, ed.1(1984)
SS-ENV 50 141 ed.1 (1994)
9

Lab.gruppen LAB 1000 Specifications

Power Output

max output power at 8 Ω stereo	350 W
max output power at 4 Ω stereo	550 W
max output power at 2 Ω stereo	600 W
max output power at 8 Ω bridged	1200 W
max output power at 4 Ω bridged	1300 W

Power Output (EIA)

max output power at 8 Ω stereo (EIA)	380 W
max output power at 4 Ω stereo (EIA)	600 W
max output power at 2 Ω stereo (EIA)	700 W
max output power at 8 Ω bridged (EIA)	1300 W
max output power at 4 Ω bridged (EIA)	1400 W

Calculated Peak Power

peak power at 8 Ω stereo	500 W
peak power at 4 Ω stereo	900 W
peak power at 2 Ω stereo	1300 W
peak power at 8 Ω bridged	1800 W
peak power at 4 Ω bridged	2600 W

IHF Peak Power

ihf peak power at 8 Ω stereo	450 W
ihf peak power at 4 Ω stereo	750 W
ihf peak power at 2 Ω stereo	900 W
ihf peak power at 8 Ω bridged	1500 W
ihf peak power at 4 Ω bridged	1800 W

Distortion

thd 20 Hz-20 kHz and 1 W-600 W at 4 Ω	0.08 %
thd at 1kHz and 600W at 4 Ω	0.03 %
dim 30 at 300 W at 4 Ω	0.02 %
ccif (13 and 14 kHz) at 200 W at 4 Ω	0.02 %
smpte (60 Hz and 7 kHz) at 300 W at 4 Ω	0.05 %

Power and Operating Conditions

power bandwidth	10 Hz-50 kHz
slew rate	40 V/µs
output impedance at 1 kHz	0.07 ohm
hum and noise below max power	<- 105 dBA
channel separation at 1 kHz	90 dB
channel separation at 10 kHz	75 dB

Phase and Delay

deviation from perfect delay 150 Hz-20 kHz	± 2°
total delay input to output at 4 ohms	4.1 µs
sensitivity for full output into 4 ohms	0.775 or 1.7 Vrms
gain switchable	36 dB or 29 dB
impedance	20 kohms, balanced

Power Requirements

operation voltage	120 V - 260 V AC
full output power	230 V AC
peak inrush current	83A

Dimensions and Weight

width	483 mm (19”)
height	88 mm (3.5”)
depth	355 mm (14”)
weight	18 kg (40 lbs)