I installed these to replace the stock speakers in my RAV4. It was almost shocking to feel the difference in weight between the light plastic/paper stock speakers and these heavy metal/poly ones. The old crossover was marble size and these ones are more like a deck of cards. I was already impressed.
Installation was easy--I cut out the old tweeters and the new ones flush-mounted into the stock brackets with enough room to put the cross-over behind it. Wiring was simple to strip and tighten in the terminal strip. I had to drill one hole for the mounting bracket in each door but that's not all that bad, all things considered.
I'm still using the stock head unit (this will be fixed soon) and I noticed a huge difference. The stock speakers had a lot more low-end but tended to be very muddy with a lot of definition lost and no staging. These polks have a much more open feeling to them with crisp, well-defined highs and mids and a very neatly defined stage.
My criticisms of these speakers are twofold. First, given the robustness of the rest of the system, the relatively flimsy plastic brackets surprised me. I can't imagine putting real power to a speaker with such a weak support. Second, while the sound is a lot cleaner, it lacks the lower end now. This is a big surprise because the old speakers were 5.25 and these are 6.5 but maybe it's just they are now under powered with the stock HU.
All in all, I'd say this has been a huge improvement and, with more power and/or bass enhancement (think sub), it'll be audiophile level.
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