Instruction manual

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