If you're building your new system on a budget, Polk Audio's DB+ Series speakers are a dynamite value as well as being stellar performers. Their journey to excellence begins with a laser-imaged design that ensures minimal distortion, a smooth response, and incredible sonic detail. 
 
3-way car speakers (pair)
marine certified — recommended for fresh water and powersports applications
6"x9" polypropylene woofer cone with rubber surround
3/4" silk dome tweeter and 1/2" supertweeter
handles up to 150 watts RMS (450 watts peak power)
frequency range: 30-22,000 Hz
sensitivity: 93 dB
top-mount depth: 3-1/4"
grilles included
 
Honed Polk perfection
These DB692 3-way speakers feature a 6"x9" polypropylene woofer cone with a strong rubber surround for solid playback and resilience under the environmental stress that comes with living in your car doors. Two silk dome tweeters deliver smooth highs with precision to give you a vibrant soundstage, while a built-in crossover keeps the highs and lows flowing to the proper drivers.
 
Handles up to 150 watts RMS
With power handling up to 150 watts RMS, you'll do fine driving this system with an aftermarket receiver, but these speakers will love life if you power them with a nice amp.
 
For custom installation
Polk includes mounting hardware, along with boldly designed grilles that add flare to your vehicle's interior if you're doing a custom installation.