Once the head unit is pulled from the dash, find the remote turn-on located in the wiring harness of the head unit. The majority of vehicles will be using an after
market head unit when using an amplifier. These after market head units generally use a blue or a blue with white wire as the remote turn on for the amplifiers.
However, when using a factory radio, the power antenna wire should be as a turn on lead if applicable (colors will vary from make/model). Only if a lead is not available
at the source, a sw12 volt supply, such as a toggle switch, should be applied.
Use a minimum of 18-gauge wire, preferably blue, to connect the amplifier to the head unit. If possible, route this wire along side of the power wire using the same
precautions. Connect the remote output of the head unit to the wire using a barrel connector or a mating terminal as required by the source unit. You can solder
these wires together, but be sure to use heat-shrink over the connection. Do not place the radio back into the dash yet.
LOAD
All TEK amplifiers reach their potential output into a 2 ohm stereo or 4 ohm mono load. Any lower impedance can send the amplifier into current protection and
possibly damage the circuitry. To prevent damage, use the following formulas to help you figure out the load you are placing on your amplifier. If you have any
difficulties, please contact your local Crossfire dealer or Crossfire's Technical assistance at 562-483-8111.
SPEAKER OUTPUT
SPEAKER OUTPUT
Parallel Wiring
Series Wiring
A x B
A + B = R
Equation
A
B
R
A + B = R
Equation
A
B
R
(A x B)(C x D)
(A + B) + (C + D)
Parallel Wiring, Dual Voice Coil
Series/Parallel Wiring Dual Voice Coil
R
R
A
B C
D
A
B C
D
(A + B) x (C + D)
A + B + C + D
= R
Equation
=R
Equation
WIRING
Always choose speaker wire wisely. Make sure that the wire is appropriate for the speaker you are applying it to. It is highly recommended not to use anything smaller
than 16awg. Consult your dealer.
As with the power wires, use caution around sharp corners or body parts that may easily cut through the insulation on the wire. If running into the doors, it is
important to use a protective boot in the door jam to protect the wire from being pinched as well as keeping water or moisture from entering the vehicle. Use the
factory boots whenever possible. And always make sure the wire is out of the way of the window track.
To connect the wire to the speaker, strip off approximately 1/2" inch (12mm) of the insulation and terminate the wires using insulated speaker terminals (not
supplied) or by soldering the connection to the loudspeaker. Be sure that the polarity at the loudspeaker is correct.
Single Channel Operation (bridged)
L
R
BRIDGED
FUSE
+12V REM GND
POWER
SPEAKER
-
+
MODELS
TEK35.2
TEK50.2
TEK75.2
TEK100.2
TEK150.2
WIRE DIAGRAMS
REMOTE TURN-ON
In between the power and ground of the amplifier is a remote turn-on terminal. This terminal must be connected to a sw12 volt source to make the amplifier
operational. Typically, remote turn-on leads are provided at the head unit that will turn on and off the amplifier in correspondence with the source. This means you will
most likely have to remove the head unit from the dash to find the 12V output wire.
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