Upgrade that factory sub, ditch the anemic sub amp and get an amp that will compliment it, then DB's all around. Amps are small enough these days you could stuff it behind the HU.
If you look at the speaker specifications from JBL and Polk, you'd see that the JBL GTO actually puts out very slightly less sound volume than the Polk DB series do when driven by the exact same wattage.
A speaker's Sensitivity specification is how much sound volume it produces with a given power level input.
The JBL GTOs put out a 91 dB sound pressure level when driven by a 1 watt input.
The Polk DBs put out a 92 dB sound pressure level when driven by a 1 watt input.
That 1 dB sound pressure level difference between the Polk DB and JB GTO is certainly not enough to be able to hear, our ears can only tell a 3 dB sound pressure level difference, but the Polks are definitely very (!) slightly louder at the same power wattage input.
Both of those speakers are considered high sensitivity which means neither requires a lot of power to put out a lot of sound.
https://www.jbl.com/gt7-gto9/GTO329...r_GTO329___color=Black-GLOBAL-Current#start=1
https://www.polkaudio.com/products/db6502
To run these you will need (at least) a factory sub. I have this setup and with just the speakers it was incredibly anemic. Once I swapped in a low-end sub in the center console the system balanced out and is pretty great now (though I have some rattle reduction to do sometime).
A sub is not required to see the benefit of upgrading the four main speakers. I upgraded to just the Polk DB speakers in my previous TJ with an aux amplifier and the improvement in sound quality was startling. My previous TJ did not have a subwoofer. Adding a subwoofer is a nice thing to do, I have one now, but to say it's required isn't really true... unless you're into playing your music loud enough to irritate those in cars surrounding you.
It's actually easier for a 3 Ohm speaker to put out more sound volume than a 4 Ohm speaker because its lower impedance (electrical resistance) forces the amplifier to put out more power. In some cases more than it should. The lower the impedance of the speaker, the more apt it is to make an amplifier unstable unless the amplifier was specifically designed for the lower impedance. I spent 40 years in the technical side of the electronics industry.
I'm looking at 4x the Polk DB 522.
Any suggestions for the double din unit? Ideally, I can connect my Android phone and a high resolution backup camera. And I want a physical volume button.
Consider the Polk 6.5" for the speaker pods, it is worth it from a sound standpoint. Pics of what it looks like. Also, stuff the pods with polyfill regardless of speaker size.View attachment 71751View attachment 71752
None. Screw the speaker to the outside of the pod.I'm adding polyfill to the cart.
Crutchfield says 6.5" doesn't fit. What harness do I need to make them work?
No, we're not saying the same thing. You keep saying the JBL speakers are designed to put out more sound volume with less power. You're clearly misunderstanding the Sensitivity rating which is the industry standard for how speakers are compared to know how much volume is put out when driven with a precise amount of power.Exactly, this is what I am saying. These JBL's are specifically designed to be loud without supplying much power. Of these two speaker choices, if you are going to add an amp, I'd go with the Polks since they have more leg room for that. However, if you don't want to add an amp, then go with the JBL's because they will perform better than the Polks. That pretty much sums it up.
P.S. As I read more on this, when you said "92 dB driven by a 1 watt input", this is actually the efficiency rating. The 92 dB listed on these speakers is the sensitivity rating (2.83V/1m) notation. From what I understand, the sensitivity is a better measurement.
Polk DB stuff in mine as well.
These dash speaker pods also made a noticeable improvement.
Select Increments DPE03065 Dash-Pods (without Speakers) https://www.amazon.com/dp/B00T1AB28Y/?tag=wranglerorg-20
6.5" fits in the soundbar used in 2002 and older TJs without modification. I'm not sure about the sound pods introduced in in 2003.I'm adding polyfill to the cart.
Crutchfield says 6.5" doesn't fit. What harness do I need to make them work?
The factory speakers also used an exposure. The ones I linked to are for a larger 5.25" speaker.You know, my 2005 already has these stock pod. I reused them when I upgraded my front speakers. Is this because I had an upgraded sound system? (you know, the crappy advertised 7 speaker system that is really only 5 speakers with 2 mini tweeters in the front).
6.5" fits the soundbar used in 2002 and older TJs without modification. I'm not sure about the sound pods introduced in in 2003.
You know, my 2005 already has these stock pod. I reused them when I upgraded my front speakers. Is this because I had an upgraded sound system? (you know, the crappy advertised 7 speaker system that is really only 5 speakers with 2 mini tweeters in the front).
Buy your polyfill at your local yardage store for 25% of the cost an audio store sells it for. It's called pillow stuffing jn yardage stores. Same exact stuff.
03+ doesn't fit without modification. Not worth it IMO.
No, we're not saying the same thing. You keep saying the JBL speakers are designed to put out more sound volume with less power. You're clearly misunderstanding the Sensitivity rating which is the industry standard for how speakers are compared to know how much volume is put out when driven with a precise amount of power.
Though the difference is insignificant and the difference wouldn't be detectable by human ears, the Polk puts out 92 dB of sound from one watt of power. The JBL puts out 91 dB. 1 dB less. The JBL puts out slightly less volume. Using the specifications provided by JBL and Polk.
I'm done with this particular discussion, it's a subject I'm well versed in.
No, that's a very small part of what affects a speaker's power handling/volume producing capabilities....if two speakers are both are rated at 92 dB sensitivity, wouldn't the 3 Ohm speaker have more volume potential