45KM104 + ATOM 8B + RMWK4 V2 + MRCA25 3-Pack

This bundle builds out a full boat audio system around the Kicker 45KM104 10-inch subwoofer, pairing it with a Rockville ATOM 8B 8-channel amplifier, an RMWK4 4-gauge wire kit, and three MRCA25 RCA cables to wire the whole setup. The 45KM104 handles 175W RMS and 350W peak through a 4-ohm voice coil built to ASTM UV and salt-fog standards, fitting sealed or ported enclosures between 1 and 2.4 cubic feet. The ATOM 8B is a compact 8-channel amplifier rated for 3,500W peak and 880W Dyno-Certified RMS, configurable to run 8, 6, or 4 channels off a single receiver, with independent crossovers for channels 1 through 4 and 5 through 8 so full-range speakers and subwoofers can run off the same amp. Built-in Bluetooth with auto-pairing, a voltage display, and a marine-grade conformal-coated board with stainless steel end caps and mounting hardware round out the amplifier. The RMWK4 kit supplies the power, ground, speaker, and remote wire needed for the install, along with fuses and terminals, while the three MRCA25 cables handle the RCA runs from the head unit to the amp. Together, the four pieces give a boat builder the subwoofer, the amplifier to power a full multi-zone system, and the wiring to connect it all, without sourcing cable and connectors separately.