Kits typically include media receivers, marine speakers or speaker pods, subwoofers or powered sub enclosures, amplifiers, LED light controllers, and cabling/interconnect accessories.
Many bundles include Bluetooth for hands-free calling and audio streaming; some receivers specify Bluetooth 4.2, support general Bluetooth streaming, and allow multiple phone connections.
Several components use compact or short-chassis designs, and some sub enclosures are low-profile or down-firing—specifically designed for tight or limited-space installations.
At least one LED controller specifies an operating voltage range of 10–15V DC and a control/operating range of up to 15 meters.
Speaker frequency responses in these kits generally span roughly 60 Hz up to 20–22 kHz—for example, some are specified at 60 Hz–20 kHz and others at 70 Hz–22 kHz.
