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View Full Version : Polk db series



tommybrown
02-09-2010, 03:25 PM
I had these awful Infinity reference speakers with super harsh highs. I took those out and replaced them with the polk db series 6 1/2' component system in the front and 6x9's in the rear. These sound a lot better but for some reason I"m not completely sold on them. To me they seem to be missing some crispness or sharpness that other speakers have. I've tried adjusting my JL audio 4-channel amp but it didn't change this at all. Any thoughts on this?

misfit138
02-09-2010, 03:31 PM
Are your doors deadened & sealed?

tommybrown
02-09-2010, 03:35 PM
I believe so. The speakers aren't visible since they were installed underneath the door panels just like the factory speakers were. The tweeters are installed underneath the grills on the dash.

misfit138
02-09-2010, 03:38 PM
How can you not know if your doors are deadened & sealed? Did the installer (I'm assuming you didn't install them) apply sound deadening material or not?

tommybrown
02-09-2010, 03:39 PM
No there was not sound deadening material installed.

misfit138
02-09-2010, 03:46 PM
No there was not sound deadening material installed.

That's a problem. Deadening and sealing the doors will greatly increase your midbass. Mounting the tweeters in a better location will help with imaging too. And if I'm not mistaken, you can change the db level of the tweeters on the crossover.

You have some work to do.

Here's some deadener: http://www.secondskinaudio.com/products/vibration-mat-damplifier-lite.php?category=70

Here's a tutorial on how to get the job done: http://www.caraudio.com/forum/speakers/95925-proper-door-sound-deadening-you.html

Search google for a tutorial on stereo imaging/sound stage...