i have the infinity reference series all around, with no amp and they are pretty good, they just cannot pick up lows at all. im solving my problem by getting an amp and sub from a S&S Ralliart. but what i would recommend is buying from best buy. when i bought my speakers they gave me the option to get a 4 year warrenty. i took it because it was only 10 bucks a speakers. about a week ago one of my rear speakers blew out. so i took it to best buy and they actually replaced both my rear speakers for free. and they funny thing was when i went i realized that they didnt have the exact speakers i bought, so they had to give me a better version, all for free. IMO i would get them from best buy and get that warrenty so u have no worries when your blasting your music.

 

thanks for the great input, drewell

btw, whats the different with mb Quart Q216, QSC216 and QSD216

 

dude, any car installer that you talk to.. says that the infinite system is a pain in the *** to work around. I say rip it out and sell it, get a new system. I suggest Diamond Audio, d6's subs, 10's.. These subs are awesome for anything. Country to Heavy metal. Hex speakers, theres no downfall to this diamond stuff.

 

they are all different specifications, not by much though

if you are not going to amp them get the QSC 216