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Wiring the BUGERA
8
CAUTION: WE HIGHLY RECOMMEND THAT
!
BIAS ADJUSTMENTS BE CARRIED OUT BY
QUALIFIED PERSONNEL!
Wiring the BUGERA
CAUTION!
!
Hot! Risk of injury! During use, the valves
will get very hot and high surface temper-
atures may be reached at the rear of this
unit. To avoid burning yourself, make all
connections while the unit is still cold.
ATTENTION! TO AVOID DAMAGE TO YOUR
!
AMP, NEVER USE THE BUGERA VALVE AM-
PLIFIER WITHOUT A LOUDSPEAKER CON-
NECTED!
The BUGERA amplier has two paralleled LOUDSPEAKER
outputs which are used to connect one or two speaker
cabinets.
If you only connect one speaker cabinet, be sure that the
IMPEDANCE switch is set to match the impedance of the
connected cabinet.
If you want to connect two speaker cabinets, both cabi-
nets should have to the same impedance. Be sure to
have set the IMPEDANCE switch correctly. In this case,
set it to half the value of one of the cabinets. When us-
ing two
16-Ohm cabinets, the switch therefore needs to be set
to 8 Ohms; and with two 8-Ohm cabinets, set it to the
minimum impedance of 4 Ohms.
CAUTION: The loudspeakers in the combos are connect-
ed in series. This results in an impedance of 16 Ohms.
Impedances
BUGERA head with a speaker cabinet