MBL 9007 - Installation Procedures

mbl 9011 | mbl 9008 A | mbl 9007
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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 dierent 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