Blown door panel speakers

I've got a 2001 LXi convertible. Infinity sound system, of course. I have a new Sony head unit, as of 6 months ago...it's not extremely powerful. ($150) The old radio blew upon a jump start. Anyway...I just noticed that my two door panel speakers are both blown. Is the power output (ohms) that much different in an after market radio? Are the factory speakers only capable of handling the original radio output?

Please advise...I'm ready to purchase and install two new speakers, but I want to make sure that's all I have to do. I read some posts about a 'line level converter'...is that needed?

All you should really have to do is replace the blown speakers and it should work fine. The thing you want to make sure is right is the watts on the speakers vs. the output on the infinity amp that sits under the passenger seat. If you have an amp for the interior speakers the wattage output on the head unit shouldn't matter since the speakers are run from the amp (I believe). Pretty much any speaker will most likely work because most factory speakers are really really sub par no matter who "manufactures them". I pulled my infinities out of my 99 sebring and was really suprised and the poor quality of the speakers, especially since I have purchased after market infinities in the past ('96ish) and was very satisfied running 4 off a 700w amp. Blowing newer infinities on 200w's seems a little questionable to me. I have a feeling that infinity just sticks their label on the cover and has nothing to do with the actual speakers that are in the car. Your problems with the speakers are most likely with the speakers being of poor quality rather than the deck being too good, (I've blown 2 of 4 "infinity" speakers off the factory setup). If you wanna save em make sure your bass on the eq is turned down cause these speakers can not even remotly handle bass and survive without tearing the cone.

As far as a line level converter is concerned you shouldn't need one, especially with an after market deck. A line level converter is used to convert standard speaker wire to inputs that amps need for audio feed. Mostly these are just used for installing after-market amps with a factory deck that doesn't have preamp outs. Most non-factory decks made in the last 10 years have at least 1 preamp out on the back.