Summary: I've had good enough luck with JL Audio products over the years. Facing a very limited space in a 1971 Alfa Romeo Montreal, I decided to try some Versapods and 4" speakers. There were very few 4" speakers offered with an included grille, as most are intended to replace OE units in their existing location. It required a tiny amount of grinding to open up the Versapod to accept the JL's, but only a moment's work.
Pros: Small size. Included grille
Cons: Limited range - but that's to be expected from a 4" speaker.
Summary: I bought 1 of these to replace the 3.5" Infinity Reference in my dash slot. I had to modify the opening a bit to fit the speaker in but there is a huge sound difference. I had to install a 100uF capacitor on the Infinity to keep the lower midrange from clipping the speaker out at high volumes. The TR400-CXi handles them without a problem. The highs are much clearer and the distortion I had is gone now.
Summary: ran these for about 1 1/2 to 2yrs. i hated them ever since i got them but was never a big priority to send them back, i wish i had. i just faded them down and relied on the other speakers, i couldnt turn them up, even a little without terrible sound. and i spent 2 grand with crutchfield, they put my whole system together so it wasnt a compatability issue. after a while the main speaker rubs on the shaft that supports the tweet in the middle.
Summary: Put these in the rear doors for my extended cab Chevy Truck. They sounded good, but not quite as good as the front 6.5's in the same model. Still a much needed improvement over the rattling stock speakers. Great price, great product, and great service! Thanks Crutchfield and JL Audio!
Summary: I opted out of the 4x6 in the dash and decided to use the TR400-CXi w/the adapters in my '90 Chevy p/u. Had to cut out the factory grills for the tweeters to stick thru and it's well worth it. Very clean/accurate. My JVC KDR-610 drives them well and volume is good when turned up with any kind of music.
Conclusion: We installed one of these in a 1980 camaro z28 and it added great, clear sound. It, along with two rear-deck mount 6x9's are being driven by a 350/4 JL Audio amp. I would suggest not only this speaker, but this entire JL Audio line to anyone... Happy Customers!!!!
Summary: I bought these speakers trusting that they would be awesome, I mean they are JL Audio and the facts are all there. I was very wrong, the speakers sounded alright at very low volumes, but as you turned up the volume to normal to loud hearing, it was very bad. The speakers started to sound like a radio station that you barely get frequency to, very unclear. Can't turn it up, because they don't get very loud.