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Dual 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
HIGH PASS FILTER CAPACITORS
LOW PASS FILTER INDUCTOR
CH3
SPEAKER
CH4
SPEAKER
SUBWOOFER
MINIMUM IMPEDANCE
8 OHMS!
SPEAKER IMPEDANCE
4-8 OHMS!
CH1
SPEAKER
CH2
SPEAKER
SUBWOOFER
MINIMUM IMPEDANCE
8 OHMS!
GROUND
To REMOTE OUTPUT
from HEAD UNIT
To BATTERY
Four Channel Amplifiers:
D350.4 and D500.4 Amplifiers