Adding Rear 3rd Row Speakers

[GAINMOB]

I can turn sub off...when I take trips I will have 2-12's...I don't want the 3rd row bassed out completely...the subs will be off or down real low so it'll work

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[KINGDELL91]

I can turn sub off...when I take trips I will have 2-12's...I don't want the 3rd row bassed out completely...the subs will be off or down real low so it'll work

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I might look into the factory Pillars that he had pictured i love the placement of them i would just have to swap out the factory speakers. I also like the amps under the seats i might have to check if that will work for me before i install it in my rear panel cause i would really prefer to weld a battery rack in there

 

[GAINMOB]

I already have my amp in the rear panel...I was just thinking of how to put a battery back there

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[KINGDELL91]

I already have my amp in the rear panel...I was just thinking of how to put a battery back there

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Im throwing my 4ch in there my DC 3.5k wont fit with i all that i have going on with it. but yeah get you some steel bars and weld it in there bro im just waiting to get money for new batts i had 3 HC 2400's going to switch to XS Power in rear and under hood. The one in the panel will always be there and there others i will move in and out as i please

 

[KINGDELL91]

Here are the parts for my system:

Front Speakers:
Infinity Reference 6832cf (component speakers)

Rear Speakers:
Infinity Reference 6832cf (2-way speakers)

3rd Row Speakers:
Infinity Reference 1031t (1" tweeters)

8" Subwoofer:
Polk Audio db840

Amplifiers:
Kicker 08ZX200.4 (35w x 4; 2 of them) - This model has been discontinued now though, but you can probably still find them on eBay or something similar

The front and rear door speakers were direct replacements (size 5x7/6x8). For the tweeters in the front doors, which are part of the component system, I had to enlarge the stock openings a bit with a Dremel tool, but then they fit like a glove. For the 3rd row tweeters I just used a hole drill bit to drill the hole. I mounted the two amplifiers under the second row captain chairs. Even though the sub is an 8" sub, Ford uses a speaker that has mounting holes that are actually closer to 9" so I made an adapter out of a piece of MDF in order to install the new sub in the factory sub box.

One amp powered the front and rear speakers. The other amp powered the sub and 3rd row speakers. I also ran new, quality, speaker wire between the speakers and amplifiers so that noise would not be an issue. Everything sounds so much crisper, clearer and louder (although I don't really play my music loud). The bass is much better as well even though it is still an 8" subwoofer. The bass will not be heard 10 blocks down the street, but I wasn't looking for that anyway. I have been so impressed with the improved sound quality over the OEM system (and I thought the OEM system sounded pretty good) that I am considering getting satellite radio for better, clearer content since my upgraded system really amplifies the "flaws" in standard and even HD radio.

Below are a few pics...

nice where did you ground the amps?

 

[MauiBoy99]

For anyone interested, I'm doing this mod on my 2013 Expedition - add the OEM Lincoln speakers to the rear. The part numbers I got from the dealer for medium light stone colored trim (18978B) are:

• 7L7Z-18978-DAB (LH $54.96)
• 7L7Z-18978-CAB (RH $64.96)

 

[DD31]

Thanks for the part numbers. This seems like a good addition to the sound system

 

[Flexpedition]

For anyone interested, I'm doing this mod on my 2013 Expedition - add the OEM Lincoln speakers to the rear. The part numbers I got from the dealer for medium light stone colored trim (18978B) are:

• 7L7Z-18978-DAB (LH $54.96)
• 7L7Z-18978-CAB (RH $64.96)

Just want to make sure you know that these are the speakers ONLY.


They require the d-pillar trim / housing / pod for the speakers to mount to. This is the same trim where your 3rd row seat belts mount to.

Here are some example part numbers for those. They vary depending on standard/extended length and interior color.

* 7L7Z-40310-11AA dealer list price $184.57 driver side
* 7L7Z-40310-10AA dealer list price $182.85 passenger side

Google random picture:

 

[MauiBoy99]

For anyone interested, I'm doing this mod on my 2013 Expedition - add the OEM Lincoln speakers to the rear. The part numbers I got from the dealer for medium light stone colored trim (18978B) are:

• 7L7Z-18978-DAB (LH $54.96)
• 7L7Z-18978-CAB (RH $64.96)

Unfortunately, these are the speakers + grilles only, as I found out when they arrived. The actual "D" pillar trim is <31010 IIRC.

 

[12XLT]

I just bought a 12 XLT. I found this thread because I'm in search of a fuller sounding system. Reading the threads though, I may have less options because the first owner chose only the 6 speaker system (tweeters by side view mirror, speakers in front doors and speakers in rear doors). Where is the factory sub (I don't have) location because if I'm going to do this, I may as well install a sub as well.

 

[GAINMOB]

I just bought a 12 XLT. I found this thread because I'm in search of a fuller sounding system. Reading the threads though, I may have less options because the first owner chose only the 6 speaker system (tweeters by side view mirror, speakers in front doors and speakers in rear doors). Where is the factory sub (I don't have) location because if I'm going to do this, I may as well install a sub as well.

Rear cargo area on drivers side...

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[MyExpedition2016]

Looking to do this with 2017. Where do you have to tap the 3rd row speaker wires to? Is there a harness already present in the D pillar, or does this involve something more to get speakers in the 3rs row?

 

[sls1980]

Did you find out where to tap in to run sound to the third row?

Looking to do this with 2017. Where do you have to tap the 3rd row speaker wires to? Is there a harness already present in the D pillar, or does this involve something more to get speakers in the 3rs row?

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[1955moose]

You do realize that tapping into existing wire for speakers will most likely overheat the amplifier, whether built into head unit or separate. Most if not all car speakers are a 4 ohm load, and by running the wires in parallel, pos to pos, neg to neg, your dropping that impedance to 2 ohms . The amp isn't designed for that extra load, and subsequent heat. If this is what you want to do, try searching for 8 ohm speakers in the size your fitting in rear, or consider running a separate amp for them if possible.

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[sls1980]

Not sure if you understand, or I didn't state clearly. I was wondering if, since the Navigator have the option, the wiring was already there under the pillar. It wouldn't be tapping in to the rear door speakers or anything like that. It would be using the factory wiring.

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[Trainmaster]

I can speak for the earlier (2010) XLT's. The XLT models usually have a limited harness without the wiring for the subwoofer, steering wheel controls or the rear amp. You have to make a harness.

The better Ford radios have a third plug that feeds the subwoofer and rear amplifier. The base radios just have two plugs.

This probably changed for 2015.

 

[1955moose]

Sorry, didn't know Ford offered a 6 channel amp. Crutchfield can make up a custom harness for you. They did that for another member that was having problems hooking up his 2007 head unit. You might give them a call. On post #53 you asked one of the others, where did you tap in? That's why I thought you were splicing in. If it's an option, and your vehicles new enough, why can't harness be ordered through Ford?

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[Max Fernandez]

Well, I have been following this thread since some time now, trying to find the best solution for my Expedition Eddie Bauer 2007. I finally made the choice of buying a component tweeter of 1 inch from Infinity, Infinity Kappa 10.9T.

https://www.amazon.com/-/es/Infinit...001NPXGG6/ref=cm_cr_arp_d_product_top?ie=UTF8

The installation process was super easy and it took 3 hours from a technician. Space is enough to place the tweeters and crossovers on the back of the panel as shown in the pictures. I connected this to the back speakers without an amplifier (all connected to a Pioneer head unit) and sounded absolutely fantastic. As my expedition has a subwoofer OEM it compensates very well and gives the third-row seat the ambience sound I was looking for and not present before.

Keep in mind you have to buy around 5 meters of speaker wire for each side to connect.

The speakers cost USD$ 75.00, plus USD$ 30.00 for the installation... total USD$ 105 wich was not bad at all for the final result.

Keep in mind any tweeter smaller than 1 inch will be too small for the space... it could work but I would definitely recommend 1 inch as an appropriate option.

See the pictures of the install and final result... if you have any questions, please let me know. I will be glad to help.

Regards,

Max

 

[Trainmaster]

Nice work at $10 per hour. The labor in a shop here in the US would be closer to $100/hour.