Adds sub-woofer level controls or balances a multiple amplifier installation.
Provides Dash Mounted Sub-Woofer volume control^Range is +/-8 dB^Adds sub-woofer level controls or balances a multiple amplifier installation.
Xpress Bass Knob provides dash mounted sub-woofer volume control. It adds sub-woofer level controls or balances a multiple amplifier installation. Range is +/-8 dB. Mount it in or under the dash.
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