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Connect the radio power antenna lead from the receiver
to the amplifier Remote terminal. This turns the amplifier
on whenever the receiver is turned on. If a power
antenna lead is not available connect this wire to the
radio or accessory (ON/Off switched by key) fuse.
Remote / Turn on Terminal
The 8V output of your receiver is no risk for the 4V input stage of the receiver.
The reason for this is that the receivers head unit produces a maximum of 70%
output at full volume and the dynamic of the music signal produces no persistent
peak of 8V to the input stage.
A crossover is a device that removes unwanted
frequencies from a speaker or amplifier. A tweeter can be
easily be destroyed by bass notes if they are not filtered
out. Likewise a subwoofer will not sound natural if it is
playing midrange notes. A crossover removes these
sounds from the speaker. Careful adjustment is needed
to ensure that all the speakers are playing the right
sounds and that you are left with no "holes" or low spots in
the frequency response.
A subsonic filter acts like a crossover but at very low frequencies. It
removes sound that is so low the speaker can not reproduce it. You see
the cone moving but hear no sound. This can be very hard on your
woofer especially at high power. If you are using a ported subwoofer
enclosure at high power you should use a Subsonic Filter to limit cone
movement at very low frequencies.
This amplifier is a mono design. Meaning it has only 1 channel.
It is equipped with a single large block terminal for speaker
connection. Make this connection carefully and neatly. If the
wires ever come in contact with each other the amp will go in
protection.
Know your total ohm load before you make any connections.
Note: Do not attempted to run loads below 2 ohms. For best results use a 2 ohm or
higher load.
This amplifier has an adjustable Bass Boost. Both the frequency and
the level of the boost are adjustable. Start with a small increase in
the level control. Then "sweep" the frequency up and down. If you
do not hear any improvement then the woofer does not need any
boost. Use Bass Boost carefully. The demands on power output are
tremendous. Try to minimize the use by changing woofer position or
the enclosure size.
SETTING THE GAINS
Crossover Controls
Subsonic Filter
Speaker outputs
Bass Boost
Audio Input Section / Input Level Switch
Because of the wide range of head unit output configurations the amplifier has an
adjustable input sensitivity or “Gain”. The gain is not a volume or a power limiting
control like a throttle. It makes the amplifier more sensitive to input from the
stereo (head unit). With the gain up (loud output level at a lower volume setting on
the head unit) the amplifier will reach its maximum rated power output too early.
At higher gain settings (as explained above) the amp also becomes more sensitive
to noise from the car electrical
system. Wrong gain adjustments
can cause distortion and also
may damage your speaker. Try
to get the right gain adjustments
at about 70% output volume of
the head unit. Keep the gain
adjustment of the amp as low as
possible.
The amplifier is equipped with a microprocessor that diagnoses the code that the
amplifier is failing:
Thermal Protection
The amplifier has reached its maximum safe operating temperature.
Short Protection
The amplifier has detected a short circuit and shut down to avoid damage.
Repeated Short
The amplifier is detecting a consistent short circuit condition and will not turn
back until it is resolve.
Over Volt Protection
The battery voltage is unusually high and could damage the amplifier.
Protect Light
PROTECT
The input level switch does not take effect to the input sensitivity but switches an
electrical adaptation of the input signal. Use it like described. The switch should be
in position “low” if normally used (operating with cinch wires on pre-amp output
equipped radios)
ATTENTION! When using speaker output (wiring the speaker output
direct to the amplifier) of the factory radio be sure that the input
level switch position is ALWAYS in the “high” position.
NEVER operate the switch during the amplifier is turn on.
Non-observance can cause radio damage!