These speakers are sold individually, not in pairs. Works well in open air or mounted in an enclosure.
This item has all of the same features as the Poly-Planar MS150 with the addition of a dedicated 100 watts peak 50 watts RMS waterproof amplifier. The amp is made to mount on the back of the speaker, but can also be mounted elsewhere. Great for a situation where you want to add a sub woofer, but don't want to add a separate amplifier to power it.
Built in crossover to dedicate the speaker to only reproducing the low frequencies without muddying up the sound.
A waterproof speaker designed to complement your marine audio system by providing heavy duty bass response, with up to 150 watts RMS. The MS250's corrosion proof contruction featers a polypropylene cone with TPU surround for a long life in the marine environment. Easy to install, even in difficult locations, either from behind or in front of the cutout. Download manual or factory spec sheet