mbl 9011 | mbl 9008 A | mbl 9007
15
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.
Recommended power-switch positions for different loudspeaker impedances
Power switch
Speaker load mono
Speaker load stereo
Power amplifier
Power switch 1
8
O
8
O
/ 4
O
mbl 9011/9008 A/9007
Power switch 1+2
8
O
/ 4
O
8
O
/ 4
O
/ 2
O
mbl 9011/9008 A
Power switch 1+2+3
8
O
/ 4
O
/ 2
O
8
O
/ 4
O
/ 2
O
mb 9011
mbl 9011 power switches
mbl 9008 A power switches
