Polk Audio AA2652-A MM651UM 6.5-Inch Coax Ultra Marine Speaker

I haven't installed these yet but after all these reviews im excited, but that wont be until springtime... they are well built, I at least can give that review. my main reason to write something here was to clarify that this price is for the PAIR of speakers , i know it sounds silly but no where in the description does it say PAIR and after a FEW conflicting answers from amazon I was able to confirm that this price was for 2 speakers. Shipping was lighting fast with prime as always so props for that as well ... looking forward to springtime!! ***UPDATE*** now that its summer these bad boys are running 100w to each and sound amazing! have 4 of these running and to say its loud is an understatement ,super crisp on the top end with some good punch on the low ... highly highly recommended Mike

I'm a big fan of Polk Audio in general. Was curious about the Ultra Marine speakers and decided to use them in an ice chest stereo. I was going to use cheaper speakers, but I like my sound too much. I used a 320 watt Power Acoustic amp and high grade wire. They sound good. The highs are fantastic, but the bass is great at mid volume (which is plenty loud) but distorts the mids and highs at higher volumes. I do believe this is because you can only get so much acoustic clarity out of an ice chest box. I'll say this though, my kids spilled juice on it pool side in the sun. It dried onto the speaker. I sprayed it with a light hose. It cleaned very well and has not changed the sound at all.

We just installed 4 MM651UM units in our 2008 Glastron DS215 along with a new ipod control Kenwood deck and they sound great! They replaced Glastron's original equipment Clarion units. The Polks have proven to be more efficient and lighter with overall better sound quality than the Clarion units. The speakers delivered crisp, well balanced sound that was not too bright and bassy enough to satisfy our teenagers all day on the lake. Also appreciated is the improved construction and protection over the stock units. Polk integrated a protective mesh over the tweeter which the Clarion's did not, resulting in 4 tweeter cones that had been kicked in over time. Overall very pleased with these new units. We look forward to great times at the lake!

After much research, it seemed the Polk MM651 commonly came out on top for marine speakers. I have installed them on two of my boats and they sound amazing when properly amped. However, out of eight speakers four of them have broken at the tweeter/grille connection and start to buzz because the silver part of the grill separates from the black plastic housing that holds the tweeter. All of mine separated first on the grill arm that has the Polk logo on it, then the arm directly across from that. This same pattern of breaking occurred on four of eight speakers. I've had them installed for roughly a year on the first boat and lost one speaker. Then within two months lost three more speakers do to this same problem on pontoon boat. I have not contacted Polk as of yet, but will. I'm hoping Polk takes care of this or redesigns the grill mounted tweeter. Other than that, at the price, sound quality and output are unbeatable! ***Update***: After one call to Polk reporting what happened with my speakers, they promptly sent me four brand new speakers with the newer model. I have not been able to install these yet, but I was very impressed by the way customer service handled this....can't ask for more than that! Thanks for standing behind your product Polk!

Speakers did not fit cannot remove grill. Could not install without removing Grill in my application. Return policy terrible. Cost me 40% restocking fee. Make sure that they will work in your application!

I have only seen photos of these installed on my new Chris Craft Corsair (well, new to me, at least!). But they look absolutely fantastic. Very high end. I had worried that the grey/black look might grate with the overall look of the boat's cockpit, which is all stainless steel and teak. But it looks great, much nicer than another bland white unit I had first considered. I get the boat next week and will update my rating when I have been able to put the speakers through their paces. But, if they sound as good as they look, then I am going to be one very happy customer!

I was excited to get these sexy speakers into my boat, and at first they sounded great. I thought since the cone didn't have a tweeter stem, they'd last forever. WRONG. A few months into ownership, the silver arms holding the tweeter started to come apart and began to audibly rattle as you're playing music. Then about 5 months later, one of the speakers just died. No real reason, just died on me. I had extensively researched my speakers, and had much higher expectations from Polk Audio. Will probably go with infinity or something else in the future.

Simply phenomenal. I have 4 of these installed in a 21 foot bowrider and powered by a Rockford Fosgate R600/4D amplifier and they simply rock. My boat is pretty loud inside at cruising speeds but these deliver clear, full, musical sound at very high volume that easily overcomes the engine and wind noise onboard the boat. I'm truly amazed by how good these sound, considering the relatively low cost and the fact that at the end of the day they are just 6.5" coaxials. Good, good stuff.