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9
Tri-Mode Speaker Wiring
Tri-Mode Operational Output is a unique feature which allows a Crossover (Subwoofer) to Be operated in
MONO mode, while the main speakers are playing in STEREO.
To engage the amplifier in this mode, place the Crossover (Subwoofer) switch in the "OUT"position. Use a
100v non-polar capacitor for a high pass crossover and a wire coil inductor to block high frequencies from
the Crossover (Subwoofer) as shown in the figure below. Please review the table below for inductor and
capacitor component values to determine the desired crossover frequencies.
Component Values
for 6dB Passive Crossover
Frequency Inductor Capacitor
80Hz
100Hz
120Hz
152Hz
7.5mH
6.5mH
5.5mH
4mH
470uF
330uF
330uF
220uF
GROUND
To REMOTE OUTPUT
from HEAD UNIT
To BATTERY
SPEAKER IMPEDANCE
4-8 OHMS!
LEFT
SPEAKER
RIGHT
SPEAKER
SUBWOOFER
MINIMUM IMPEDANCE
8 OHMS!
HIGH PASS FILTER CAPACITORS
LOW PASS FILTER INDUCTOR
Two Channel Amplifiers:
D400.2, D650.2 and D1000.2 Amplifiers