To REMOTE TURN-ON
from HEAD UNIT
To REMOTE
TURN-ON
from HEAD UNIT
To REMOTE TURN-ON
from HEAD UNIT
Tri-Mode Operation is a unique feature which allows two channels of an amplifier to
drive a subwoofer operated in MONO mode, while simultaneously driving full range
speakers in STEREO.
to determine the desired crossover frequencies.
- 12 -
- 13 -
Four Channel Speaker Wiring
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CH 3
SPEAKER
CH 1
SPEAKER
CH 2
SPEAKER
CH 4
SPEAKER
Bridged Speaker Wiring
Four Channel Amplifiers:
R280.4, R350.4 Amplifiers
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SUBWOOFER
SPEAKER
SUBWOOFER
SPEAKER
SPEAKER IMPEDANCE
4 - 8 OHMS!
SPEAKER IMPEDANCE
4 - 8 OHMS!
Dual Tri-Mode Speaker Wiring
To engage the amplifier in this mode, place the Crossover (Subwoofer) switch in the
"FULL" position. Use a 100v non-polar capacitor for a high pass crossover and a wire
coil inductor to block high frequencies from the Subwoofer, as shown in the figure
below. Please review the table below for inductor and capacitor component values
F r e q u e n c y I n d u c t o r C a p a c i t o r
80Hz 7.5mH 470uF
100Hz 6.5mH 330uF
120Hz 5.5mH 330uF
150Hz 4mH 220uF
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+
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SUBWOOFER
SPEAKER IMPEDANCE
4 - 8 OHMS!
SPEAKER IMPEDANCE
4 - 8 OHMS!
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CH 1
SPEAKER
CH 2
SPEAKER
SUBWOOFER MINIMUM
IMPEDANCE 8 OHMS!
HIGH PASS
FILTER (CAPACITORS)
LOW PASS
FILTER (INDUCTOR)
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HIGH PASS
FILTER (CAPACITORS)
LOW PASS
FILTER (INDUCTOR)
CH 3
SPEAKER
CH 4
SPEAKER
SUBWOOFER
SUBWOOFER MINIMUM
IMPEDANCE 8 OHMS!
Four Channel Amplifiers:
R280.4, R350.4 Amplifiers
Four Channel Amplifiers:
R280.4, R350.4 Amplifiers
