Use box speakers when you don’t want to cut holes in your boat to flush mount speakers. Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 16 32 All Sale! Poly-Planar MA840 Black Sub Compact Dual Cone Box (pair) Waterproof Marine Speakers $92.95 Original price was: $92.95.$38.95Current price is: $38.95. Rated 3.86 out of 5Add to cart