Boss Audio Systems B12ES, User Manual

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Low-Level Input Wiring
The subwoofer offers you two wiring alternatives for audio signal input from your source unit (head unit). Low-
level input wiring is preferred for waudio input. It provides an exceptional clean sound from the source unit.
Important! Do not connect both the high-level and low-level inputs from your source unit to the subwoofer at
the same time.
L R
To the RCA audio outputs
of your head unit
• Using RCA cables (not included), connect two RCA jacks ( LINE INPUT L/R ) on the subwoofer to the RCA
audio outputs on your head unit. Make sure the left and right channels are correctly matched.
• To reduce the possibility of noise entering the signal chain, use high-quality, well insulated RCA cables. Run
the RCA cables away from large cable loops, electric fan and power cables.
High-Level Input Wiring
The subwoofer offers you two wiring alternatives for audio signal input from your source unit (head unit). Use
high-level input wiring for audio input from the source unit only when RCA audio outputs are not present on
the source unit.
Important! Do not connect both the high-level and low-level inputs from your source unit to the subwoofer at
the same time.
To the speaker wires
of your head unit
Green
Purple
*
*
Purple/Black
R+
R-
L+
L-
Green/Black
To metal frame
of your vehicle
Black