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"o get them to install the tweeter in the door too? I think i like it there anyway. and no there are 2 types of XR Comps CSI (silk) and CXI (aluminum)"

CSI is the component system
CXI are the coaxials

Both have the same aluminum dome tweeter

http://mobile.jlaudio.com/products_comp ... page_id=32

But yeah, get them to install the tweets close to the midbasses and on a similar axis.

yeah i realized that when i double checked their site, sorry

well are the components worth the extra 40 bucks since the coaxials have cross overs anyway?

Ok its between the


CDT EF-61CF 140 rms - $220 shipped
JL XR650 CXi 70 rms - $190 shipped
JL XR650 CSi 70 rms - $225 shipped
JL VR650 CXi 60 rms - $130 shipped
JL VR650 CSi 60 rms - $180 shipped

so basically your saying JL are better quality than the CDTs? and that the 140 rms doesnt translate into louder and better sound correct? Do you guys think comps and coaxials will be a lot different in sound quality since they are getting mounted in the same area and both have crossovers? Also between the XR and VR is 10 watts rms gonna make much of a difference in volume to justify the price?

You'll have more installation options, and to me that's definately worth it.

Jonathan wrote:You'll have more installation options, and to me that's definately worth it.

yeah but im pretty much gonna put em in the door with the midranges lol

"so basically your saying JL are better quality than the CDTs?"

I like them a lot better. CDT gives you generic Vifa drivers then rapes you with the price of their crossover.

"and that the 140 rms doesnt translate into louder and better sound correct?"

Power is never a bad thing unless it's misused. JL conservatively rates the components, so as far as true music power I'd give them a 300/2 or equivalently powered amp.

"Do you guys think comps and coaxials will be a lot different in sound quality since they are getting mounted in the same area and both have crossovers?"

Depends. You'll be surprised how much difference a small change in tweeter location or angle can make. Good results can be had with both, but I'd rather have the security of knowing that I got the best possible imaging with the space I have to work with.

"Also between the XR and VR is 10 watts rms gonna make much of a difference in volume to justify the price?"

The differences are for the purpose of SQ, not volume. 10W isn't a lot of difference when you're comparing 60W and 70W, you have to double the power to net a 3db gain. But the SQ of the XRs is better than the VR.

Since you seemed interested in the XXX mids..i'd pick up a set of extremis' instead. Who doesnt enjoy a mid with lots of throw? It'd run you around $200 and some change for the pair and then you could throw in a tweet and crosssover of your choice. Not a bad option IMO.

Problem is that the midbass isn't all that well inclined for a car door. IB speakers need a Qts in the .5 range to have decent lower and midbass performance. Low Qts speakers in an IB application are overdamped, meaning they will have little efficiency down low without help of an enclosure to raise the Q and resonance of the system. This is why Low Qts speakers are more inclined to small sealed and ported enclosures, while High Qts drivers are more inclined to larger sealed and infinite baffle applications. Excursion can't help that one, and 3-4mm of excursion is plenty due to the cabin gain of the vehicle.

Midrange performance of the Extremis isn't all that stellar, either, the Koda midbass driver had better midrange.

Jonathan wrote:Problem is that the midbass isn't all that well inclined for a car door. IB speakers need a Qts in the .5 range to have decent lower and midbass performance. Low Qts speakers in an IB application are overdamped, meaning they will have little efficiency down low without help of an enclosure to raise the Q and resonance of the system. This is why Low Qts speakers are more inclined to small sealed and ported enclosures, while High Qts drivers are more inclined to larger sealed and infinite baffle applications. Excursion can't help that one, and 3-4mm of excursion is plenty due to the cabin gain of the vehicle.

You've got a good point. I have heard of people having good results with them in car, but I agree they are more suited for a HT application. Another downfall is the fact that the Extremis only come in an 8ohm config. I believe Adire is coming out with new 4ohm Extremis soon if i recall correctly. Any idea if this set will be any more suited for the car?