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FINAL INSTALLATION
.
Proper installation of your amplifier should also address several areas; adequate mounting and
ventilation, proper signal input interface, correct use of internal crossover networks, “clean”
power/ground wiring, proper fusing, and power/speaker wiring.
ADEQUATE MOUNTING AND VENTILATION
Inevitably this amplifier will be mounted in locations with limited space. If possible, try mounting the
amplifier on a vertical surface with the fins up/down for best vertical air movement. The mounting
screws supplied with this unit should be used for the most secure installation.
SIGNAL INPUT INTERFACE
This amplifier can accept input signals up to 6 volts rms over the RCA input jacks.
Due to high input
signal capabilities, people may want to interface the high level output of a radio
(24
Vrms) to the input
of the amplifier.
This can be easily done by connecting the
“+”
lines of the two speaker outputs to the
center conductors of the RCA jacks. One common signal ground reference wire is connected from the
radio chassis to the shields of the RCA lines connecting to the amplifier input.
High or Low Level Signal Input
“HIGH LEVEL CHASSIS GROUND
“LOW LEVEL AUDIO
RCA LEADS
t
RR-
USE OF INTERNAL CROSSOVERS AND TONE CONTROLS
Internal active crossover networks allow for this amplifier to be configured in three possible modes;
OFF (FULL-RANGE) disables the crossover so
&l
frequencies pass through the amplifier, HP
(HIGH-
PASS) passes only frequencies above the crossover control setting, and LP (LOW-PASS or
SUBWOOFER) passes only frequencies below the crossover control setting. In the LP
(SUBWOOFER) mode the slope of the crossover is 12
dB/octave
at low frequencies
(@
20 Hz), but
at the higher end of the control
(0220
Hz), the slope approaches 24
dB/octave.
This prevents
male voices from sounding bad if the control setting is set up around the 220 Hz value.
I
LP (LOW PASS) CROSSOVER
I
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-.
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/4
’
12
dB
pe’
OCTAVE
OdB
-3
-12
-24
-36
1_
/
/
/
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/
ssow
,/
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,
-
I2
dB
per
OCTAVE
1
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