CLASS D WIRING CONFIGURATIONS
WIRING USING (1) TERMINAL
The Class D amplifi ers are single channel amplifi ers. Unlike Crossfi re Class A/B amplifi ers, these operate as single channel,
therefore one amplifi er cannot be bridged by itself. Please see diagram below.
Each subwoofer has a single 2 ohm voice
coil and are connected in parallel to one
terminal, the amplifi er will see a 1 ohm load.
On the side panel of your amplifi er is a potentiometer marked 50Hz-250Hz on all Class A/B Amplifi ers, 50Hz-150Hz on all
Class D Amplifi ers. This controls the relative crossover point for the amplifi er. To apply the crossover feature, locate the switch on
the same side panel that’s labeled HPF/FULL/LPF. For highpass applications, such as componet sets or coaxials, choose HPF.
For lowpass applications, such as woofers, choose LPF. If you are looking for full range application, place switch on FULL. Note
that full will override the crossover completly
Listed below are recommended crossover points for various size speakers. These are only guidelines. Actual crossover points
recommended by the speaker manufacturers may vary and we suggest you follow those recomendations.
Speaker size Crossover recommendation:
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
If your system is lacking low bass response locate the
dial on the amplifi er. A boost from 0-12dB
centered around 45Hz can be added by turning the dial
clockwise. With the dial turned all the way counter clock-
wise 0 boost will be added. This boost function is available
on specifi c models only. Please see specifi cation chart for
verifi cation. Crossfi re highly recommends using this fea-
ture only on amplifi ers powering subwoofers.
PREAMP FEATURES
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