Of course, since it was going to house an audio system, Dobson and Funkhouser set about determining placement of the components in a sensible way that would distribute weight efficiently and elevate everything from any concern of standing water, should there be any leaks in the sealed-off areas they went on to fabricate.
Power Management is Key
Without the ability to plug into a wall, this cooler relies on its on-board 12-volt battery for power. Dobson used a compact Werker deep-cycle AGM motorsports battery with a very respectable 20AH reserve capacity. The battery rack holding it mounts securely using the same bolts for the rear hinged axle, so the distribution of weight is sensibly right over the rear wheels. The battery provides the power for the JL Audio M-200/2 marine full-range Class D amplifier that drives all of the cooler’s speakers. “The JL marine amplifiers are very conservative on current consumption for their robust power output, so this was an obvious choice for us,” explained Funkhouser. The M200/2 drives four JL Audio MX-650 6.5-inch marine coaxial speakers, two speakers per channel, so the amplifier runs at a two-ohm stereo load.