Pioneer TS-ME770TSB marine coaxial Tower speaker (195 mm).

Pioneer TS-ME770TSB Marine Grade ME-Series 2-Way Coaxial Tower Speaker 7.7" (195 mm). (250 W) 

ME-Series Marine Entertainment Combining Pioneer Sound Quality with All-Weather Durability.
Pioneer's ME-series marine speakers are protected from the effects of sun and water exposure, meeting both IPX7 & ASTM D4329 to achieve all-weather reliability. 
They offer you fantastic sound, high reliability and an attractive design, by Pioneer.

Utilising a Mica reinforced IMPP(TM) monocoque cone and a rubber surround, they are constructed using advanced in-mould bonding techniques, meaning they have superior water resistance whilst maintaining high quality and a powerful sound.
Internally, a symmetrical motor design combined with high strength suspension optimises stability, linearity and clear, low distortion sound reproduction.
For the most natural sound, they also feature a lightweight Dome Type tweeter carefully positioned with a unique shaped wave guide to provide natural, clear vocals with wide dispersion. 
Great for fantastic sound.
Thanks to Pioneer's original canister design, the TS-ME770TSB also features a Vortex generator. 
When the boat is traveling at speeds of more than 100 KPH / 54 knots, regular Marine Tower speakers can cause turbulence. 
Pioneer's Marine Tower speakers have what's called a Vortex generator built into the design itself, reducing unwanted turbulence and increasing the aerodynamics, therefore improving your overall enjoyment factor.
The TS-ME770TSB Tower Marine speaker comes with a matte pearl black sports design, that can integrate seamlessly with flexible mounting options when connected using the UD-ME30CP Mounting Bracket, sold separately
If you want to personalise and add an extra touch of colour, the TS-ME770TSB included built-in RGB lighting, to illuminate the entire cone area.

Pioneer's TS-ME770TSB Tower Marine speaker is 250 W Max. / 100 W Continuous Power Handling (RMS)