Chaparral 224 Sunesta The existing Clarion marine radio was utilized in this installation. No need to replace something that is already working great. The JL Audio speakers are a home run, great looks, great performance and built to last. The JL Audio marine grade speakers look great in this boat! The JL Audio sub uses the airspace of the boat as an enclosure, so no big box is needed. The Marine Grade JL Audio Amplifier is tucked away on the side and the wires neatly secured.