Reddit reviews Rockford Fosgate R14X2 Prime 4-Inch Full Range Coaxial Speaker - Set of 2

It's a 1995 Mitsubishi Montero.
Haven't removed the door panels so I've yet to see the brand of the speakers already installed. Alright, I've got some investigating to do.

Rear panel: https://www.amazon.com/dp/B00BF6HWFY/ref=cm_sw_r_sms_apa_7z0VAb1A1DKVD

Front door: https://www.amazon.com/dp/B00BF6HWAO/ref=cm_sw_r_sms_apa_JC0VAbZAHR8WP

Dash: https://www.amazon.com/dp/B00BF6HWF4/ref=cm_sw_r_sms_apa_YD0VAbW6ANGZE

This project for my 2006 TJ may have been easy for someone who had a lot of experience with it, but I hadn't wired an Amp since high school so it was certainly interesting and at times challenging.

I wanted to keep the OEM Head Unit because it looks cool and it doesn't advertise the fact that there's now $450 of aftermarket audio parts in the soft top TJ. Plus I think it looks cool.

Problem 1 - There's no Aux Audio In, so we fixed that with a kit designed to use the port for a multi-CD changer (I bet a lot of kids don't even know what the heck that is but it would have been a fun addition back before MP3 players):

https://www.amazon.com/gp/product/B0007CK30I/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B0007TXP6A/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

I stashed the input into one of the two cigarette lights - the little bulb actually sort of fit as if it was designed for it.

https://www.amazon.com/gp/product/B071R4H85Y/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1

Problem 2 - I hated the look of the sound bar so I'd ripped it out, leaving only the 2 OEM speakers in the dash. I wanted a lot more power and a lot better sound, but I was worried about space, moisture/water, and getting speakers in without a sound bar.

The solution:

1 - Jam 2 4x4 inch Rockford Fosgates into the rear corners, zipping them down and then zipping their covers over them. This turned out to look really cool (they're not pictured) but I will need to figure out a solution to cover them up in case it rains.

https://www.amazon.com/gp/product/B00BF6HWF4/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

2 - Replace the OEM Dash 4x6 inch speakers with some great 4x6's from Rockford Fosgate that can really handle a lot of power:

https://www.amazon.com/gp/product/B002G9DO8S/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

These went in pretty clean with zip ties because they ship with this cool perforated plastic oval thing that you can chop bits and pieces out until you get a good shape. This was helpful because the OEM drilled holes were in a funny spot and definitely didn't line up (every other speaker I've ever installed lined up so it's good that RF thought of this).

3 - Now the tricky part - Kenwood makes this killer little 4x100 Amp that's designed for motorcycles, boats and 4-wheelers... I thought it would be perfect for the TJ and I was definitely right. It fit perfectly into the back of the Glove Compartment with absolutely no drama.

What was dramatic was the whole wiring job. Obviously everything had to be cut and spliced because the OEM Head Unit on the 2006 TJ does not come with Audio Red/White Outputs. That meant cutting/stripping each output wire from the TJ and cutting the Red/White inputs for the Amp and splicing those, then stripping the wires outbound to the speakers and patching them into the output of the Amp.

Hopefully it won't be too much of a problem that I jammed the power into the fuse for the Radio - that's a 10 amp mini-fuse so actually I think it will be perfect to complement the 15 amp mini-fuse that's already in the Amp wiring harness.

I have a bit of an issue with grounding - I grounded off on the same location that the Head Unit does, on the right hand side of the dash. At peak power, this is causing the Amp to come un-grounded and turn off. What I did was throttle the fader off the rear speakers by 30% and this seemed to resolve the problem with the downside being I'm getting 30% less sound from the 4x4's, but... luckily the 4x6's sound amazing so this isn't really a big deal.

https://www.amazon.com/gp/product/B00JEC0YFQ/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

The best part about this setup is that really you cannot tell when looking at the Dashboard that all this audio horsepower is in the TJ, and even the rear speakers remain pretty hidden behind the rollcage.

I realize I should have taken pictures throughout the install but oh well.

I’d say for the most part it blends in but you’ll hear a bit more vocal or bass depending on the speaker.

The only issue is there are a lot of logistical problems in doing so with this car in terms of plug and play easy install.

Assuming you have the HIFI system with the tweeter (small speaker by the mirror) and midrange(bigger speaker by the door grip) in the front door there are two (BMW propriety) connections on the midrange speaker. Unless you get a speaker crossover or speaker wire splitter, you’ll lose the tweeter (tweeter has a bass blocker, that little cylinder in the wire which acts like a crossover).

EX:
(Midrange gets signal and also passes signal to tweeter 1)

BMW Connection 1 ——->Tweeter
Speaker ———-| Midrange Speaker
Wire —> Connection 2
(2 gets the speaker signal)

*Welp can’t make a good diagram on mobile. Maybe on a desktop this looks better.

A cheap setup for the front is:

NOTE: This is a coaxial setup where all sound is in one place, not bad but the component setup is usually seen as better (what’s in the car now) because it splits the speakers apart creating a better sound stage.

To not hack into the OEM wiring:

61138373583 - End Piece which goes into existing Speaker End.

61130006664 - One Pin which go into Speaker Wire End Piece (you need two for every end piece)

Cheap 4” Speaker and adapter mount

Rockford Fosgate R14X2 Prime 4-Inch Full Range Coaxial Speaker - Set of 2 https://www.amazon.com/dp/B00BF6HWF4/ref=cm_sw_r_cp_api_i_qF4WDb4F28S6Y

OEM Hifi AMP can put out 25W at 4 OHM’s
Speaker above is 30W at 4 OHM’s RMS. The difference is minimal and you won’t start clipping, over taxing the amp and speaker unless you’re at full volume it. Rockford is a great brand overall.

Depth of the Speaker is 43.6 mm

Exact Fit Front Speaker Adapter Spacer Rings For BMW Vehicles - SAK076_4-1 Pair https://www.amazon.com/dp/B01M755KAD/ref=cm_sw_r_cp_api_i_IS4WDb4JV45YG

You put the adapter over the back of the speaker sandwich it onto the door. I used the same one in my install. Therefore the depth doesn’t matter. If you front mount the adapter you’ll be at 6.35 mm so lightly over the depth with the above speaker but you won’t run into any issues.


Congrats on the door lock working!!!!