MODELS
TEK35.4
TEK50.4
LOW IN
R
L
LEVEL
HPF FULL LPF
FREQ
LEVEL
FREQ
HPF FULL LPF
POWER
LOW IN
50Hz 150Hz
50Hz 150Hz
R
L
HIGH IN
HIGH IN
L R
L R
LOW IN
LOW IN
R
L
LEVEL
LEVEL
ON OFF
ON OFF
FREQ
FREQ
HPF FULL LPF
HPF FULL LPF
POWER
POWER
50Hz 150Hz
50Hz 150Hz
HIGH IN
HIGH IN
L R
L R
CROSSOVER
CROSSOVER
BOOST
BOOST
MODELS
TEK35.2
TEK50.2
TEK75.2
TEK100.2
TEK150.2
High Level Inputs
Tap to Source
Speaker Output
+
-
+
-
Left lead
Right lead
+
-
+
-
Left lead
Right lead
Tap to Source
Speaker Output
+
-
+
-
Left lead
Right lead
CROSSOVER
On the side panel of your amplifier is a potentiometer marked 50Hz - 150Hz. This controls the relative crossover point for the amplifier. To apply the crossover feature,
locate the switch on the same side panel that reads HPF/Full/LPF. For highpass applications, such as component sets or coaxials, choose HPF. For lowpass applications,
such as subwoofers, choose LPF. If you are looking for a full range application, place the switch on FULL. Full will override the crossover completely.
Note: The four channel amplifiers will have two sets of crossover controls, one for front and rear.
Listed below are recommended crossover points for various size speakers. These are only guidelines. Actual crossover points recommend by the speaker
manufacturers may vary.
Speaker
size
Crossover
recommendation
4"
(100mm) component/coaxial
HPF 130Hz - 150Hz
5.25" (130mm) component/coaxial
HPF 80Hz - 110Hz
6"
(160mm) component/coaxial
HPF 70Hz - 100Hz
8"
(200mm) woofer
LPF 90Hz - 120Hz
10" (250mm) subwoofer
LPF 70Hz - 100Hz
12" (300mm) subwoofer
LPF 70Hz - 100Hz
15" (380mm) subwoofer
LPF 50Hz - 80Hz
BOOST
If your system is lacking low bass response, locate the boost switch next to the crossover. By placing this switch in the on position, 6dB of boost centering around
45Hz will be added. In the OFF position no boost is added to the output signal. This boost switch is available on all Crossfire TEK amplifiers with the exception of the
TEK35.4, TEK50.4, TEK55.5, and the TEK400.1. Crossfire highly recommends using this feature only on amplifiers powering subwoofers.
PREAMP FEATURES
PREAMP FEATURES
6
