Bowers & Wilkins Marine 8

Marine 8 is a two-way loudspeaker with a 25mm (1in) tweeter and a 200mm (8in) polypropylene bass/midrange driver. It boasts an IP66 rating for incredible ruggedness when installed, and although it is the larger of the Marine loudspeakers it fits into a shallow depth of 93mm (3.7in) with a cut-out of 249mm (9.8in).