Pyramid Technologies PB448X - Manual (Page 9)

features and controls
7
input gain controls use these controls to match the outputs of
your head unit to each pair of amplifier
inputs. Starting with your head unit volume
control set at about the 2 o’clock position,
increase the amp gain controls until
distortion begins to occur, and reduce slightly
from this point.
high level inputs if your car stereo does not have RCA output
jacks, you can connect the speaker output
from the stereo system to the amplifier.
speaker connections these terminals are 14K gold plated to
guarantee high conductivity and minimum
signal loss.
subwoofer crossover
on/off switch
this flexible amplifier can be set up with
left/right (or bridged) rear subwoofer
system(s). This switch activate the rear
subwoofer crossover.
power fuse the fuse protects the amplifier and your car’s
electrical system from short circuit conditions.
power terminals use these connectors to deliver power, ground,
and remote turn-on control to the amplifier.
power LED this indicator is illuminated when power
is applied.
subwoofer crossover
frequency control
when activated, this control sets the upper
frequency limit for signals sent to the rear
channel(s).
protection indicator if the amplifier is incorrectly wired or not
matched to the speaker system, the protection
indicator will come on and the amplifier will
turn off. Disconnect the power wire to reset the
amplifier.
low level inputs this amp features gold-plated RCA input
jacks for high impedance input. Use these
with car stereo output which uses RCA-type
connector cables.
bridged mode switch the amplifier can be bridged to form a
high-power two channels unit. Make sure
that the speaker system on the bridged
channel is capable of handling the rated
power and is of the proper impedance.
ntrol