Bang & Olufsen Beolab 4000 MKII 6642 Service Manual - page 17
6.1
Specification guidelines for service use
Specification guidelines for service use
BeoLab 4000 MKII
Type
6642 (EU), 6643 (GB), 6644 (US), 6645 (J), 6646 (AUS), 6647 (KOR)
6648 (CN)
Power supply:
Voltage
100-240 Volt
Power consumption
Typical: 6 W, Standby: 0.5 W
Cabinet finish
Grey, black, dark grey, yellow, red/black, blue/black
Front cloth
Grey, black, dark grey, yellow, red, blue
Dimensions W x H x D
28 x 32 x 16 cm (with wall bracket)
Weight
4.5 kg
Indicator
LED for On (green) or Off (red)
Operation
Left, Right or LINE, switch
Protection
Thermal protection of SMPS
Tweeter protection
System data:
Effective Frequency range
55–20,000 Hz
Sound Pressure Level (SPL)
97 dB/IEC noise 3 m/stereo/room
Input impedance
47k
W
Harmonic distortion
Electronics:
Active crossover network
Linkwitz/Riley
High pass filter
30 dB/octave, 51 Hz
Low frequency equalization
51 Hz/+10 dB
Bass equalization
ABL (Adaptive Bass Linearization)
Acoustics and cabinet
:
Cabinet principle
Bass reflex
Woofer
114 mm (4½”), 8
W
Tweeter
18 mm (¾”), 8
W
Magnetically shielded
Yes
Crossover frequency
3.3 kHz
Net volume, bass
4 litres
Power amplifier:
Signal to noise ratio
>= 84 dBA (1W in Woofer)
Input sensitivity/impedance:
Input sensitivity Power Link & Line
125 mV (88 dB SPL) Auto switch on
Power link sockets
1V/47 k
W
Power link channel separation
>55 dB/10,000 Hz
Standby function
Automatic On-Standby
Switch off time (line)
3 min.
Power amplifier, bass
30 W, Class D, ICE power®
Power amplifier, treble
30 W, Class D, ICE power®
Long-term maximum output power
56 W
Connections:
Power Link
2 x 8-pin socket
Pin 1
Power up/down not used
(interconnected between the two Power Link plugs )
Pin 2
Signal GND
Pin 3
Left in (also used for line in. Note: pin2&7 in the plug
must be connected when used for line in)
Pin 4
Loudspeaker on/sense => 2.5V, OFF =
Pin 5
Right in
Pin 6
Data (Not used)
(interconnected between the two Power Link plugs )
Pin 7
Data GND
Pin 8
(Not used)
(Jacket:
No connect)
Subject to change without notice