Summary: these polk db651s speaker fit perfectly into my 78 bronco...It is only a hunting vehicle so just keeping to 2 speaker un amplified system...inexpensive deck and these speakers,, sound is awesome . but that seems to be with any truck or boat ive installed the polk line.
Summary: I installed these speakers in the front doors of my 2010 chevy silverado extended cab and they were perfect. They are super loud and very clean and crisp sounding. You can hear clearly from about 10 feet outside of the truck when my stock radio is turned up all the way. They don't have great bass, but it certainly isn't bad.
Summary: I think the speakers have a nice balance for highs and mid range. They are lacking bass response and need a subwoofer to support them. Amplification will help produce a clearer fuller sound out of these speakers.
Pros: Nice highs and mid-range Fit many vehicles with limited space
Cons: Lacking bass response A decent amount of power is required to produce a full sound
Summary: I installed these to replace some old JBL GTO speakers I have had for some time, which I used to replace my factories when they pop with my new head unit in my 02 Wrangler, and they did not disappoint. Very clear and crisp highs and mids. Bass response however is only fair to midland, I would like to hear a little more boom from them. That said, for what it is, it sounds really good as all Polk speakers should. The only real complaint I have is cosmetic.
Pros: Clean look. Excellent packaging, plenty of hardware to assist in your install. Very clear and loud sound.
Cons: Not a lot of boom maybe after they break in it will get better, Plastic rings should a better mounting system.