I just bought a new 2013 Accord Sedan V6 with the 370 watt 7 speaker system. On some music the rear speakers under the rear windshield vibrate the deck on which they are installed against its backing or windshield until it sounds as if the speakers are blown. I'm going to take it in for the dealer to repair, but am wondering if this is a common problem? It almost seems that the deck holding the speakers is not secured onto the metal backing supporting it. Has anyone else had this problem?

 

Haven't had that problem myself, but that sounds like what is wrong..
Let us know if that was it.!

WheelBrokerAng

 

more likely they are causing the third brake light housing to vibrate against the rear glass. the stock speakers should have foam isolating them and it is very rare for stock bolts to be loose since they are torqued by robots.

turn down the bass and defeat the active noise cancelling (ANC) if you want better, clearer sound.