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I started with replacing the front door speakers. The DB6501 were a choice selection based on their overall reputation of quality and durability and price. They were consistent with the specs that I was looking for. They also include liquid cooled silk tweeters and I figured that if they meet a standard to be marine certified, then that couldn't hurt either as the marine use is generally pretty hard on equipment.
Choosing Car Speakers and Components - Polk Audio
The 6.5" woofer is larger than the 5.25" stock speaker so I modified the enclosures to mount them. The LX470 uses complete enclosures on all 4 of the door woofers and the same modifications made them all fit very well.
After I removed the factory speaker and test fit the new Polks, I found that the 4 legs of the main support cage were the only area that would contact the enclosure to keep the speaker from sitting inside. So I marked the cage position on a supplied gasket that I did not use and transferred the markings to the enclosure locating the mounting screws in place where they would not interfere with anything else. Then I used a dremel to clearance the enclosures and the speakers fit right inside.
Choosing Car Speakers and Components - Polk Audio
The 6.5" woofer is larger than the 5.25" stock speaker so I modified the enclosures to mount them. The LX470 uses complete enclosures on all 4 of the door woofers and the same modifications made them all fit very well.
After I removed the factory speaker and test fit the new Polks, I found that the 4 legs of the main support cage were the only area that would contact the enclosure to keep the speaker from sitting inside. So I marked the cage position on a supplied gasket that I did not use and transferred the markings to the enclosure locating the mounting screws in place where they would not interfere with anything else. Then I used a dremel to clearance the enclosures and the speakers fit right inside.
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