RGHR45 + RWB90B 2-Pair

This four-zone marine audio package combines the RGHR45 Bluetooth gauge hole receiver with two pairs of RWB90B 8" black wakeboard tower speakers featuring 360-degree swivel brackets. The RGHR45 controls four independent volume zones: zone 1 powers its built-in 28W x 4 RMS amplifier, zones 2 and 3 each manage a full-range RCA output pair for external amps, and zone 4 handles a dedicated subwoofer output. All zones are adjustable from the receiver or the included wired remote with zone controls. A 3" TFT color display shows track info, video, photos, and rear camera feeds. IP66 waterproofing and Humiseal-coated PCB boards protect the internals.

The RWB90B speakers use 8" polypropylene cones with 360-degree swivel nylon brackets reinforced with embedded steel. At 200W RMS each with high sensitivity, they push enough volume and bass to fill open water at cruising speed. Stainless steel terminals, rustproof hardware, and fully marinized drivers handle salt and fresh water exposure. The brackets fit tower tubing, roll bars, and cages across boats, Jeeps, and ATVs. Three pairs of RCA pre-amp outputs on the receiver make it easy to add amplifiers as you expand the system with more speakers or a subwoofer.