Boss Audio Systems GT 1380 Four Channel Speaker Wiring, Bridged Speaker Wiring, Component Values

Four Channel Speaker Wiring

Four Channel Amplifiers		+
GT 1180, GT 1380, GT1480	CH1		CH2
	SPEAKER	+	SPEAKER

GROUND	+
10			CH4
	CH3
To REMOTE TURN-ON	SPEAKER	+	SPEAKER
from HEAD UNIT
To BATTERY
Bridged Speaker Wiring
Four Channel Amplifiers	LEFT SPEAKER	SPEAKER IMPEDANCE
GT 1180, GT 1380, GT1480	(SUBWOOFER)	+	4 - 8 OHMS!

GROUND

To REMOTE TURN-ON

from HEAD UNIT	RIGHT SPEAKER	+	SPEAKER IMPEDANCE
			4 - 8 OHMS!
	(SUBWOOFER)

Dual Tri-Mode Speaker Wiring				AUDIO
Tri-Mode Operational Output is a unique feature which allows a subwoofer to be operated in MONO
mode, while the main speakers are playing STEREO simultaneously on one pair of amplifier output
channels.
To engage the amplifier in this mode, place the Crossover (Subwoofer) switch in the FULL position.
Use a 100V non-poplar capacitor for a high pass crossover and a wire coil inductor to block high
				SYSTE
frequencies from the subwoofer, as shown in the figure below. Please review the table below for
inductor and capacitor component values to determine the desired crossover frequencies.
Four Channel Amplifiers	SUBWOOFER MINIMUM	SUBWOOFER
GT 1180, GT 1380, GT1480	IMPEDANCE 8 OHMS!
Component Values	CH 1	+	CH 2
	SPEAKER		SPEAKER
for 6dB Passive Crossover					11
	+		+	SPEAKER
	LOW PASS FILTER			IMPEDANCE
	(INDUCTOR)			4 - 8 OHMS!
				S

HIGH PASS FILTERS (CAPACITORS)

GROUND

HIGH PASS FILTERS

To REMOTE TURN-ON(CAPACITORS) from HEAD UNIT

+		+	SPEAKER IMPEDANCE
To BATTERY			4 - 8 OHMS!
CH3		CH 4
	+
SPEAKER		SPEAKER
LOW PASS FILTER

(INDUCTOR)		SUBWOOFER MINIMUM
	SUBWOOFER	IMPEDANCE 8 OHMS!

To BATTERY