[TazRango]

This was compiled from various sources, if you see something missing/wrong, post a reply and I will update it. More info regarding factory amps and head units will also be added soon.

The factory speakers in all non-Infinity models are 4Ω. The factory speakers in all Infinity models are 2Ω. Infinity models also have a (crappy) factory amp that must be bypassed when installing an aftermarket head unit. Infinity models can be identified by the presence of the extra tweeter in each front door.


Dakota

1987-1996 Front door: 5 1/4" | Rear cab: 5 x 7"
1997-2011 Front and rear doors: 6 3/4" (1) | Tweeter: 1" (2)

Durango

1998-2003 Front and rear doors: 6 3/4" (1) | Tweeter 1"(2)
2004-2009 Front and rear doors: 6 3/4" (1) | Tweeter 1"(2) | Rear: 6 3/4" (2) | Dash: 3 1/2"
2011-2015 Front doors: 6 x 9" | Tweeter: 1" (2) | Rear doors: 6 1/2" | Dash: 3 1/2" (2) | Rear D pillar: 2.5" (3) Subwoofer: 8" (3)

Notes:
(1) 6 1/2" speakers will also fit. Aftermarket speakers require you to reuse the factory spacer ring to avoid interference with the window.
(2) Infinity systems only
(3) 7.1 Surround systems only - surround systems also include Infinity speaker locations in Note (2)

 

[RalphP]

For standard cab Gen1's, you can add the cab rear is 5x7 .

RwP

 

[TazRango]

Is that for the entire generation? All the application charts I looked at showed only two door speakers for standard cab, no rears..

 

[RalphP]

For all standard cabs, yep.

Not all standard cabs have'em (I mean, who needs rear speakers with a AM mono speaker?) but the mounts are there.

That's where they are in my 1988, and it's got plastics back there I got out of a 1994 ... old plastics were cracked, where a previous owner had bolted 6.25" round ones in with *looks like!* a 1" impact on "SHOV'ER HOME NO MATTER WHAT!!" setting *grins* (Blown ones, too ... )

I think the extended cabs are also, but haven't verified personally (those plastics don't fit my standard cab *grins* )

RwP

 

[NitroRunner]

Ok, dumb Q time, why must the factory amp be bypassed when using aftermarket head unit?

I ask as I did not bypass mine when the stock head unit croaked and I replaced it.

The only stock Infinity speakers left in mine are the tweeters in the doors, I also had to replace the door & ext cab rears when they finally gave it up.

 

[TazRango]

Because unless you install something really pathetic like a Spark-o-Matic, the head unit is going to have more output power than the stock amp (approximately 7 watts per channel RMS IIRC) - among other things.. But the bottom line is there isn't really anything you can install that will sound worse than the stock amp.

 

[NitroRunner]

Ok, I did not know the stock amp was that weak.

I put a Pioneer DEH-X66BT in and have been happy with it.
It has Built-In Amp, MOSFET 50 W x 4.

 

[TazRango]

The 50x4 rating is "max" watts, which means nothing. RMS watts (the standardized number) is closer to 20x4, but that's still a lot better than stock