This speaker component works good. It has a good fidelity sound. I like them, it was worth buying it. I recommend these speakers, the only important thing is to tune them up really good. I'm talking about the equalization, once you do that really good you'll get the best quality from them, but trust me those sound really good. That's all I can say to the people who want to buy them.

I've had a lot of different component sets and some costing 3-4 times these JBL's but these are simply the best set of 6 1/2's made!! JBL/Harmon knows how to build audio equipment that is second to none. The DIYMA forums tests speakers through Klippel testing and the JBL 660GTi 6 1/2's performed at the top of the list!! These absolutely rock! You won't be disappointed in these components I promise. I just bought two sets since the price dropped and so should you!!!

... then these speakers are the ones for you. Amazing, crisp sound quality.

Best I've ever heard. I listen mostly to trance - and these speakers do this particular style of music such incredible justice!

The design stays true to JBL's continuing mission of providing workmanship second to none. They have yet to be properly tuned to my remaining car audio - but currently I catch next to NO distortion. Assured that once I tune them - I will receive none whatsoever. Granted, its imperative to pair these with a correctly rated amp.

I look very much forward to when I next get behind the wheel - as the music I choose to play - regardless of volume - is reproduced to the same exacting standards that its creator intended.

I've had these speakers in my Charger for over one year and have yet to find a system that sounds as good as it. One of the woofers went out with a bad voice coil and Sonic Electronix hooked me up with a replacement woofer. The clarity and seperation are superb. The only negative of having a audiophile quality system is that I can definitely hear how poorly some CDs are mastered. I am using the Pioneer Premier P800 PRS head unit and two Stage 4 PRS A900 amps. I have the speakers bi-amped and have the crossovers set in the neutral setting. I have been using JBL speakers exclusively since 1975.

Amazing speakers. I have had seven pairs of components and these by far are the best I have ever owned. I compete in car audio. No one will touch my scores with me running these speakers.

I originally attempted to purchase 2 pairs of Boston Acoustic's SPZ60's. Fortunately the 2nd pair was on back order and in haste and slight wincing at the cost, I purchased a pair of the JBL 660Gti's for rear fill. Well, there is really no comparison between these speakers and although the SPZ's are very nice speakers, the JBL's are on a completely different level in sound reproduction. I sold the SPZ's and replaced them with another set of JBL 660Gti's. These speakers sound amazing.

Great speakers, I wish I could find midrange speakers with clear voice quality. These 660GTI's are more for bass..

I had a pair of MB Quart 6.5 components in my vehicle that I thought sounded great but..... they lacked the umph that a speaker should have when you really wanted it. I heard about the 660GTi speakers from JBL and decided to give them a try. I'm utterly shocked at the sound quality they give out - even at loud volumes!! Absolutely zero distortion and amazing performance. After tweaking of amps and deck, I've never hear a speaker give out more than I expected!!! Well done JBL!!! Bit expensive, but still worth it in the end!!!