2
SETTING LEVEL
•
Set the amplifier
LEVEL
control to minimum before you turn on the amplifier for the first time.
•
For lowest distortion and lowest noise the amplifier
LEVEL
should be set at the lowest setting that yields
sufficient loudness without distortion. For lowest noise your source radio volume control should be near
maximum that does not cause distortion.
•
To find the best amplifier
LEVEL
setting:
With the amplifier
LEVEL
at minimum, slowly increase the source radio volume to around 3/4 without distortion.
Then, slowly turn up the amplifier
LEVEL
control to the maximum desired loudness. Listen very carefully and
turn down the amplifier
LEVEL
control if you hear any distortion.
SUBWOOFER REMOTE VOLUME CONTROL LED LIGHT
1.
While playing music the LED light should be Green.
Occasional red LED light flash indicates that the amplifier has reached maximum loudness.
2.
If the red LED light flashes with the beat of the music,
TURN DOWN THE VOLUME before you damage your speaker.
3.
If the red LED light is on continuous,
TURN DOWN THE VOLUME before you damage your speaker.
SETTING SUBWOOFER HIGH PASS SUBSONIC FILTER
•
A subwoofer should have a high pass filter often called a subsonic filter. The purpose of a subsonic filter is to
limit very low frequencies that your subwoofer can not play loud enough without damage. Removing subsonic
frequencies can allow your subwoofer to play louder.
•
For a sealed box the high pass is typically set between 8 Hz and 30 Hz to increase power handling capacity.
•
For a vented box the high pass filter must be set 5 Hz lower than the port tune frequency to prevent woofer damage.
DIRECT / MASTER SWITCH
•
For normal operation set the switch to “
MASTER
”.
•
The
DIRECT
switch position bypass the crossover functions, subharmonic synthesizer, level control and remote
controls.
DIRECT
mode can be used with an external DSP controlling all functions and level or if the amplifier
is controlled by a second amplifier.
DIRECT
is also used if two amplifiers are connected in bridge or parallel
cascade.
UNBAL / BAL SWITCH
The standard switch position is input “
UNBAL
”. Flipping the switch to “
BAL
” will change the input to“balanced input
floating ground” and may reduce vehicle electronics noise.
DIAGNOTIC AND PROTECTION LED PANEL
•
Peak Output:
Red LED light flash indicates that the amplifier has reached maximum loudness.
•
DC Protect:
Output fault- the amplifier must be returned for service.
•
158 F:
Maximum temperature before thermal protection, you need better cool air venteliation.
•
135 F:
Safe operating temperature.
•
Over Current:
Speaker impedance is too low OR there is a short circuit.
•
Over Voltage
: DC power voltage is too high, some vehicles have a fast battery charge mode that trigger this. -
•
Fuse
: The power fuse is blown and must be replaced.
•
Fuse:
The power fuse is blown and must be replaced.
