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. 
 
2-way car speakers (pair)
marine certified — recommended for fresh water and powersports applications
4" polypropylene woofer cone with rubber surround
3/4" silk dome tweeter
handles up to 45 watts RMS
frequency range: 60-22,000 Hz
sensitivity: 90 dB
top-mount depth: 1.79"
 
Honed Polk perfection
These DB462 2-way speakers feature a 4x6" 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.