Bowers & Wilkins Marine 8 - In-Wall / In-Ceiling Outdoor Waterproof Speaker Each

Marine 8 is a two-way loudspeaker with a 25mm (1-in) tweeter and a 200mm (8-in) polypropylene bass/midrange driver. Marine 8 is designed to survive almost anything, and its big 20cm mid/bass driver ensures a powerful, weighty sound.

eBay