Rock The Boat Audio
Home > Marine Speakers > Poly-Planar > MA840B

Poly-Planar MA840 Black Sub Compact Dual Cone Box (pair) Waterproof Marine Speakers

Code: 16123      Last Updated: 2022-06-30 20:59:37
[click to enlarge]
Only 7 left in stock
Ships out the same day or next business day

Product Details:

Priced and sold per pair

Ideal speaker to position on locations in which no other speaker will fit. Speakers feature low magnetic field with stainless steel grill and bracket.

Compact bracket mount will fit almost anywhere
Each speaker handles 40 watts peak power 20 watts RMS
Low Magnetic Field Design reduces compass interference
3" Main Cone
Dual cone design
Polypropylene Cones and Stainless Steel Grille stand up to harsh marine effects
Heavy Duty ABS Plastic enclosures
4"H X 4-1/4"W X 4-1/2"D
Includes gimbal stainless steel bracket mounts

These speakers can be mounted to a bar using p clamps not included which are sold at most hardware stores in the electrical conduit section

1 year manufacturer warranty
Download manual or factory spec sheet

Related Items:

People Who Purchased This Also Purchased:


Rated 4/5 based on 7 reviews
Post your own review of this item

5/5 Stars
Submitted by , ott

These were smaller than I expected and the lead wire going in to them is a very light gauge. However I am very happy with the sound they produce. I mounted one on each corner of the upper deck of my pontoon and everyone that hears them thinks they were a lot more expensive than they really were.

5/5 Stars
Submitted by , lufkin, texas

I purchased the Poly-Planer MA840 Black Sub compact speakers and installed them on the dash of my center console boat. They sound great and very clear I am happy with them and will recommend them to my friends.

5/5 Stars
Submitted by , Hoonah, Alaska

I connected them to a Pioneer DEH-S6220BS CD Player, using the Pioneer Smart Sync App for a 31-band equalizer and Bass Boost!, they sound great on our boat. And Bluetooth music from my iPhone also sounds great!

4/5 Stars
Submitted by , virginia beach

Really good sound, great product for the price, size is great for limited space. would recommend them to anyone.

4/5 Stars
Submitted by , maryland

was tired of not being able to hear from the speakers in the center console, tucked these up under the T-Top. not a bad sound considering the price

3/5 Stars
Submitted by , Canada

The speakers are OK, not quite the sound I expected, but overall good!!!

1/5 Stars
Submitted by , 80921

Bought a set of these and a of the larger ones. The MA9060 are great but the one of these I hooked now has a bad buzz like it's blown. It's on a Jensen MS2A without an amp of any kind. Bothe the speaker and the stereo are kind of crappy