Conclusion: Wow.. couldn't believe how big of a difference these speakers made my set up sound. I upgraded to these from some hifonics atlas components which sounded great but just weren't loud enuff, I have a cadence sw312d4 in a spl box tuned to 34hz 1200 rms 2400 max running off a hifonics Brutus amp. I love my music blaring loud but clear and d.mn... these do an awesome job.
Conclusion: These are very good and loud 6.5 components. I've followed Jbl products which they are very durable and have good quality. I recommend these for good highs and average lows. These are priced very affordable and are my substitutes to Focal 6.75 165's.
Conclusion: As everyone says... These are powerhouses that have tons of low mid bass! I love them. The tweets aren't shrill or harsh like a lot of other brands. I have 75 watts rms running to them off an alpine mrp300 and they just crank! Possibly my favorite components I have had. If not I would tie them with my last kappa set. Great value for the low price! I would def. buy these again.
Conclusion: Best 99 bucks i ever spent, loud clear and stage perfectly, way to go jbl. I've been in car audio for over 2 decades, almost owned everything, diamond rockford focal, these jbl's get the job done...very pleased.
Conclusion: Replaced some infinity components that were weak in the midbass. Got a great deal on the jbls. Sound much better in the low end and midbass. Highs are decent but couldnt say if i 100% like them or not. I am still using the infinity crossover.
Dan from Mississauga, ON, Canada, Sonic Electronix
29 December 2014
Conclusion: These speakers sound great in my Saab 93. The mid-woofers JUST fit to the point where my installer shaved a little bit off the back of the door grille to ensure they didn't hit when they're moving. They have a lot of mid, I mean, when a chick hits the lower notes it's almost too much but that can be sorted out with an eq/x-over. I'm powering with Pioneer GM-D8604 and they sounds great. One of the speakers where blown and Sonic Electronix returned it.
Excerpt: Just bought my second set of P660c 4 6 inch drivers and 4 tweeters added concert sound to my 2500HD Diesel. Excellent sound when driven by the GT05ez midrange was great clear along with the tweeters great highs love them all