B-52 US Series Professional Power Amplifiers - Instruction Manual
THE BEAUTY OF POWER
US SERIES AMPLIFIERS
or 50Hz, based on the position of the switch. This
improves the bass performance of most full range
speakers (50Hz) and subwoofers (30Hz) by reducing
uncontrolled and excessive speaker cone motion. En-
gaging the HPF switch when using full range speak-
ers makes more power avail able to the speaker’s
rated frequency range, leading to higher SPLs. Engag-
ing 30Hz HPF with subwoofers helps to control cone
excursion leading to cleaner and louder bass.
5. lIMITeR SWITCh
When the sound source signal is too high, the out-
put signal will distort. To prevent this, both channels
feature clip limiters to prevent gross distortions on the
outputs. It is recommended to avoid clipping but if
it does occur, the clip limiters will greatly reduce the
amount of distortion and stress on your speakers and
amplifier. It is recommended to keep these switches in
the ON position as this will result in better sound and
increase the life of your loudspeakers.
6. BRIdge / STeReO / PARAllel SWITCh
Use this switch to change the amplifier’s operating
mode to STEREO, BRIDGED MONO or PARALLEL
MONO. Set this switch to the STEREO position for
normal stereo, or 2-channel operation.
When set to PARALLEL, the input signal connected to
channel 1 is routed to both channels. The PARALLEL
MONO mode is convenient when running a long
mono signal cable to a remote power amplifier(s),
and then connecting speakers to both of the channels
in order to reproduce the same signal. In PARALLEL
mode the input of channel 2 is inactive and should
not be used in this configuration.
In the BRIDGED position, the mono input signal con-
nected to channel 1 is routed to both the right and
left amplifier channels, yet in this mode the speaker is
connected between the two channels’ hot outputs and
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