Review written by Rob from Daytona Beach, FL

The only complaint I had at first is that they didn't perform too well in the doors with all the free air space, bass was fluttery and highs were harsh. As soon as I put them in a custom kick-panel the bass was clean and tight, and I set the tweeter crossover for -3db. They sound fantastic.
As for the design, the materials and craftsmanship seem good. The cone is properly glued to the chassis (which I've had problems with JL and MB Quart coming apart) and the chassis itself is pretty beefy.

In the box you're supplied with a mounting bracket that allows the speakers to fit most, if not all, factory 6.5 locations. Don't bother with the supplied wiring whatsoever if you plan on using an external amp, get yourself some nice 12-14 gauge wire.

If you're strapped for space, consider the 63.9is model, (s) standing for shallow. For the price, its hard to beat.

Review written by BigNasty from Albuquerque, NM

This is a wonderful speaker. I currently have a pair mounted in the doors of my 08 Tundra powered by a Soundstream Tarantula 4-channel amp. The highs are very clean and detailed. The bass is good, however I would recommend a sub for lower frequencies. Infinity did a good job with this one. I highly recommend them!!!!

Review written by SiN from Hamilton, Bermuda

These speakers are very good and they have very clear sound. I like the fact that they included adapters because I have a peugeot 207 which is a french car and they helped me mount my speakers perfectly

Review written by Joey from Anniston, Alabama

Good highs. Looks great. More bass than you would expect with a shallow design. Shallow design makes it easier to mount and it also comes with nice mounting options.

Review written by patrick from jacksonville, NC

I have had better speakers but these do sound good. They are clear and loud. I recommend these for the price

Review written by Michael from San Bernardino, CA

These speakers are great for the price! They sound crystal clear when i turn it up, with no distortion at all. I have been using these speakers for about 6 months now. Using a 120rms amp to power these and they still sound as if i just bought them. You wont regret this product.

Review written by Richard from San Diego, CA

Great deal on a great set of speakers! Unbelievable sound!!!

Review written by Mike from Greenwood, In

Great sound quality, great price. Only problem was that the magnet was too big for my doors. I drive a 96 Mercury Tracer and in the front doors there is a brace that partially impedes on the speaker slot, had to cut some plastic and metal and drill a few new holes, but all around worth it!

Review written by Stefan from Naples, FL

trust me i have a pair of the previous model and they are just excellent! At high volumes you can still hear every word clearly. I have all the bass filtered to my subs though they can pound if insist on using them for bass. Excellent brand for a phenominal price!