Just a quick update regarding the Polk Audio mm651 speakers. There are numerous reports of them going back due to tweeter stalks and the glue that holds them in place. They are falling apart over a shorter period of time than most would like. Polk has still not addressed or admitted this, so be careful when considering polk audio speakers.
Im on my 3rd set in 2 years and contacted POlk Customer Service a week ago and have yet to hear back from them.

 

It's funny reading component reviews from 3 years ago. FWIW, I too had the MM651's behind a RF PBR300x2 and loved them. Many people were running them at the time. After a couple of months one started buzzing. It turned out to be the tweeter coming into contact with the speaker grill because the stalk that supports the tweeter had shifted. Polk exchanged them under warranty. The second set did the same thing to an even greater degree. By this time Infinity Kappa 62.11s were in production and had received favorable reviews so I tried a set in the fairing. I also did added lowers at the same time and moved the Polks to them. I could hear both at the same time. The 62.11s's are at least as good as the Polks. I replaced the lower speakers with them. Don't get me wrong, the Polks rocked and not everyone has suffered stalk failure. If I were to upgrade my factory speakers today I'd for sure start with the Infinity's. There's a lot of info in the audio section. Google Polk MM651 stalk failure and several forum threads show up.

 

One other thing....the Infinity speaker grills don't fit the lowers so you will need grills of some kind. I reused my Polk grills with success.

 

I have a set of mm651 on my bike,, still working good. Not happy with the fm reception with the soundstream amp , buts thats another topic. Could it be on the stalks that the polyfill is holding in heat? Just asking. I googled Polk tweeter failures and the ones that shown are in this forum. I didnt use polyfill in my batwing because I didnt trust it to get wet and not dry out.

 

i had a pair go bad while in my lowers, no polyfill in mine. I do have it in the front fairing and it's never gotten wet so far

 

after 24k miles...my left MM651...died...glue on tweeter stalk or whatever...it just quit working...i guess 24k miles is plenty on a 2012...now that i have the fairing off...looking for suggestions on what's the next best alternative...kindda hate listening 1 channel...

thx

 

7.1" would be my choice depending on the amp you're running but if you don't want to drop the coin on those, then the next best thing IMO is the Kappa 62.11i

 

Agreed, replaced my Polks with the Kappa's, then replaced one set of Kappa's with the BT 7.1's. Curse you Nutz, this is all your fault lol

 

first day without rain and you're not riding John?

 

Breaking in my new truck today