B&K ST1200 Series - Manual (Page 14)

Page 12
The ST1200 series II may be bridged to drive a high impedance speaker. To use,
place the source group jumper for both channels on the ‘L BUS’ jumper terminal. Place
the volume group jumper for both channels on the ‘NO VOL’ jumper terminal. Place the
jumper module on the ‘-L’ terminal.
Finally, connect the speakers (+) to the right channels (+) terminal and the speakers (-)
to the left channels (+) terminal. Input your source signal into the left channel input
(
).