Polk Audio DB651 6.5-Inch Coaxial Speakers


  • 6.5-inch high-performance marine-certified coaxial speakers, perfect for boats of all types
  • 180 Watts power handling with 4-ohm impedance
  • 0.75-inch liquid-cooled silk-polymer composite dome tweeter
  • Polymer/Mica composite cone with butyl rubber surround for big sound and durability
  • Swivel-mount tweeter allows precise aiming of sound

Product Description
6-1/2″ 2-way car speakers (pair) * supplied adapter rings allow for fit into 6-3/4″ locations * Dynamic Balance polymer/mica composite woofer with butyl rubber surround * 3/4″ pivoting liquid-cooled silk/polymer composite dome tweeter * power range: 6-60 watts RMS (180 watts peak power) *Amazon.com Product Description
Turn up your vehicle’s audio performance with the db651, a 6-1/2-inch coax speaker designed to drop into a variety of applications in no tim… More >>

Polk Audio DB651 6.5-Inch Coaxial Speakers

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  1. #1 by S. Webster on May 13, 2010 - 10:28 am

    These 6.5″ speakers are too small to fit the doors in my 2001 Toyota Sienna LE. The supplied plastic adapter is too large. I returned these (at my expense) and will be trying a 6.75″ size next.

    After ordering I checked the Amazon.com car speaker finder tool, and it says these speakers will fit my model. It is incorrect. The speakers seem fine, but the website is lacking.
    Rating: 3 / 5

  2. #2 by J. Freeman on May 13, 2010 - 12:05 pm

    These speakers which are advertised as 6.5 inch are actually 5.5 inches, the adapter ring doesn’t work for my application, so now I’ll have to custom fabricate a plate to install them in my truck. I’ve read that the sound quality is decent so I’m going to go ahead with the installation and find out for myself, I just wanted to make sure that other people know the truth about these speakers size before they buy.
    Rating: 1 / 5

  3. #3 by Joel M. Shanus on May 13, 2010 - 1:16 pm

    As an owener of a new SMART car these speaker were recommended by many owner of other SMART cars. The spec’s and performance of these speaker are great. They replaced the stock speakers,the fit was perfect, there is plenty of room. The MOD went smoothly,and the end result was better then I had expected. I did add a Sub Woofer, Boss 8″Slim Bass600 from this site. The sound is the best of any vehicle I have owened.These speaker are the best money can buy.Check my MOD Pix’s on this site http://www.smartcarofamerica.com Then go to gallery click on p1nball/ thats my gallery. See the whole process!!! LOL p1nball
    Rating: 5 / 5

  4. #4 by Dennis R. Fletcher on May 13, 2010 - 3:44 pm

    I read a lot of reviews from quite a few owners on these speakers,. the speakers were professionally installed. the power source was a clarion 400w/50wrms per channel amp and a alpine upperend head unit. the results were: not that impressed even with the sound down to 4-5 on the volume and the amp at a neutral setting ; they are ok not great not horrible either. I listened to a jazz station they sound better ,but, pop to rock ehh..They were ststed by many owners as being fantastic ect,ect,. Not so, they are ok. the freq resp is no where near what the manufactor and some owners stste. I was looking for a Driver to handle some bass and let me tell you my old P Gold 2 ways rated at 45 w did a better job, in my ‘92 honda prelude,. I’ll have to try some other brand such as Alphasonic or another brand that delevers,. I’ve had Polk in the Home good product however cerwin vega blew them away.. I’ve got an energone 8″ sub at home that blows most 10″ subs away within $3-4 hundred and above range… “when I want my bass I want my bass ,but, do not want the hassell of a premium sub system in my little sports car! Anyone have any ideas?
    Rating: 2 / 5

  5. #5 by Robert J. Silva on May 13, 2010 - 4:31 pm

    Installed these on my 2006 HD Street Glide; what a difference in sound! Big improvement over the 5.25″ MB Quart speakers I had in there.
    Rating: 5 / 5