Summary: I installed these speakers to replace the dry rotting paper cones in my Saab 9-3. The metal supports behind the speaker didn't fit into the holes, so I spent a few hours with a Dremmel tool making them fit. This was my fault, ignoring the fit guides on crutchfield,(that's a good place to check for that sort of thing) but the result was well worth the extra work. These speakers are fantastic. they sound very precise, but still smooth.
Summary: Installed these in an '03 Galant (not easy, had to remove the back seat and roof support covers) and they sound great. Replaced oem Infinity speakers (cheap paper cones) and the sound is very clear and very loud. Could not produce distortion at high volumes (but I'm not a teenager anymore). I don't think you can find a better speaker in this price range.
Summary: I absoloutely love these 6x9's They fit perfectly in my '72 Chevelle rear deck and I used the plain black "old school" stamped metal grilles instead to hide what I got and make everything look stock. You already know the Infinity Reference series sound is incredibly accurate -- but I was amazed at the efficiency of 2.65 Ohms!
Summary: This three-way design from Alpine is the best bang for your buck. As a professional musician and semi-audiophile, I have a very demanding ear and these speakers deliver quality sound in every range including a very punchy bottom(thanks in part to the empty trunk) and crystal clear mid and high ranges. Granted, I don't like to listen to music extremely loud and don't require a sub-woofer for the style of music I listen to-i.e. jazz, classical and classic rock.
Summary: I put these in an old 94 Pontiac to replace some dry rotted 6x9s that had been back there for ever. These little 9623s blew me away. No amp, nothing just right off the factory radio. Deep base and crisp clean highs and mids. You absolutely cannot go wrong with these for the price. As always, Amazon had them right to my door in less than 48 hours with 5-7 day service. Shipping box was in perfect condition too.
Summary: The Infinity Reference 9623i 6" x 9" three-way speakers produce very clean highs along with full sounding mids. They can even handle increased volume to about as high as your ears can handle without any distortion. Overall, these speakers are a great value at the Amazon price of $70. The only drawback is their power handling. These speakers have a max power input of only 100 Watts, which is lower than many amps that are used in high-powered car audio systems.
Summary: After a difficult installation, I finally got them in. At first,I wasn't sure if they made any difference. But after I sealed them in, Boy what a differance. Deep solid bass, Think well amplified 10" subs, Solid!! There was some noise the first couple of days, but after they settled a bit, they sound great.