Bought these components to replace "premium" sound in 2011 Ford Escape. Factory speakers were paper, but with actual coaxial tweeter. Simply cut a 1/4 inch MDF plate and mounted the mid-woofer in the door. Tweeters surface mounted at top of doors by mirror adjust-knob. Used Sony 50w RMS x 4 channel amp to drive them. (have infinity Kappa 5x7s in rear doors). Sound quality using separate components is improved, and bringing the tweeters closer to your ears improves overall front staging and fullness. Tweeters not too bright, have them at +3db included on the crossover modules. Mid-woofer plays good bass, but have them crossed over at 100hz, as the 12" sub handles the real bass. Clean Infinity sound. Would recommend.