Installation - Mbl 9007 Bedienungsanleitung

3. Installation

3.1 Power Switches
The mbl 9011 has 3, the mbl 9008 A has 2 and the mbl 9007 has 1 main power transformer(s) to produce high power output
and to provide optimal impedance matching. They are switched depending on the respective load. The power amplifiers are
equipped with a separate shielded transformer, supplying the voltage amplification stage.
Due to the high maximum output power capability (when the "Boost"-switches 2 or 2+3 are switched on) high current flow in
the primary supply area is created. Therefore you need a second power cord for the „Boost"-operation.
mbl 9011 power switches
Recommended power-switch positions for different loudspeaker impedances
Power switch
Power switch 1
Power switch 1+2
Power switch 1+2+3
mbl 9011 | mbl 9008 A | mbl 9007
Speaker load mono
8 O
8 O / 4 O
8 O / 4 O / 2 O
mbl 9008 A power switches
Speaker load stereo
8 O / 4 O
8 O / 4 O / 2 O
8 O / 4 O / 2 O
15
Power amplifier
mbl 9011/9008 A/9007
mbl 9011/9008 A
mb 9011