Hi it is me again, the newbie. I honestly do know many of the basics of car audio folks, but have now decided to dive deeper into car audio again and invest another bunch of money in the Granpa mobile, my 97 olds cutlass supreme.....yoohooo. So now I'm concerned about the details of it that I never explored in the past.
So here's the story, I'm getting a new 4 channel and new full range speakers for front and rear of my car. Previously I've had 4 full range speakers run by my head unit, and an amp driven sub. I've pretty much settled on 3 amps, my fiance gets to choose which one I get cause she's getting it for xmas for me. I'm getting a set of Polk EX3550 5.25" components for my front doors, hope I made a good choice there. Price was the motivator, 120 bucks at crutchfield. Now I'm trying to choose a set of 6x9's for my rear deck to match the EX3550's in the front door. I am replacing a set of 3way alpines that won't hold up to being amped since they are 30 watts RMS, 100 watts peak. I am going to have an amp between 70-85 watts RMS, either Rockford Fosgate or Hifonics. So what of the following 3 6x9's from polk would be best suited considering a budget of $200:
I have plenty of room in rear deck for mounting any of them, and am looking for great SQ that will match well with the components in front. I am using a Kenwood KDC MP8017 cd receiver head unit. Keep in mind I have a 12" blaupunkt sub(6 yrs old) being pushed by 200 watt rms amp.
One last question: How do I interperet frequency response ratings and efficency ratings?
Thanks once again for your input.