Speaker upgrade subwoofer for 2003 Gen 2

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dirtrider

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I upgraded my head unit to a pioneer avic D3 about 5 years ago now. I never got around to upgrading speakers yet. Time to make that happen. I was thinking I'd put the HD radio adapter on the D3, change the door speakers, and perhaps add a subwoofer. I installed my D3 myself and am pretty comfortable working on the car but never really messed with much in the audio dept before. Looks like many of you have so here are a few questions.

Before we get to that though, my goals are to not spend very much because I just want an upgrade not a killer system. I also don't want to sacrifice any storage in back or the fold down seat option because I use it all the time.

1. Recommendations on door speakers? Years ago when I got the system I picked up one pair of polk audio db571 speakers. Never got to installing them yet. They were used and only $20 so no loss really if I don't use them for this. Amazon.com: Polk Audio DB571 5-by-7-Inch Coaxial Speakers (Pair, Black): Car Electronics


2. Subwoofer location? Not sure if under seat would even be an option with the front or fold down seats. I know the rear right passenger compartment has the blend door and hvac stuff. What's on the rear left side? I don't have air suspesion and had the basic head unit with cassette when I bought the truck (no sub).

3. What wiring is needed and best way to route it? I am guessing an install to that rear left passenger compartment. Is there any wiring in the harness that can be utilized from factory? I think I need power wire (gauge?) and then an rca cable preamp from head unit. Should I run a power wire from the fuse box (perhaps a new blank fuse location)? Then a remote wire of some sort is needed to turn on the sub right?

4. From what I understand I'd just need an amp to drive the sub. I believe the head unit is 4 channels or 2 channels and 1 sub. I can't remember the wiring but right now I am probably using all 4 channels for the speakers in the doors. Recommendations on good bang for the buck sub and amp?

5. If an install in the rear left compartment is possible what kind of grill can I get for it? I think there are stock ones right? Can I modify my left side panel and/or buy and insert for it?

6. Again assuming rear left compartment install, what kind of box for the sub and how to attach it?
 

GAINMOB

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I have the same hu...u can buy a stealthbox made by jl audio...or u can have a shop make a box to fit inside of there...most ppl say 10" but depending on space requirements a 12 should fit...I use my rear all the time as u...willing to bet NOT in the same manner...lol...I completely removed the rear sub and put my amp in there...I can post pics when I get to work

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bricekin

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The only 2 reviews for the 3rd gen stealthbox on Crutchfield are 2nd gen owners that said with minimal modifications it'll fit. If the factory subwoofer enclosure is the same from 2nd to 3rd gens then I will hopefully have an answer as to whether or not the stealthbox will fit and will provide pictures in a couple different threads of the modifications required, if any.
 
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dirtrider

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How bad was the OEM subwoofer? Looks like it was a 9" in a plastic housing??? Is it a simple plug and play with the amp mounted on top that won't require me to modify any of my storage box or cup holders on that left side panel? I'm not looking for major bass response. Just wanted to even out the system a little bit if I'm already in there changing out speakers. I see a connector there so I'm wondering if I already have the wiring that is required for the oem one. Not looking to spend tons of time on this so it may be a good option for me and it is cheap with others selling take off parts.

Then the other issue is the hole in the side panel for the subwoofer? Do I need a panel from a version with the factory subwoofer or is there a nice way to finish that off with me cutting a hole in mine?

Also need to make sure it will work with my pioneer avic D3. Can you comment on that since you have one? What is this popping I am seeing referenced on some forums?

Here are some pictures of what I have now. There is quite a bit of space in there actually. Hate to see it go to waste any longer ;).

img0589x.jpg

img0595xa.jpg

img0600mtd.jpg

img0610tw.jpg

img0608v.jpg
 
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dirtrider

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Can anyone reply if the open plug in the top picture is for the factory subwoofer? Would I be able to just put a factory subwoofer in there per questions above?
 

bricekin

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I'll take a picture of the plug on the amp tomorrow. The two problems that I see just looking at your pictures are that it does not appear that you have the factory mounting studs and the tray that you have the tape measure next to needs to be replaced with the shallower version.
 

bricekin

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Here is the picture of the plug on the amp. My harness for the amp was taped up and run along with the harness going to the C pillar. If you have it, you probably won't know for sure until you pull the radio or the rear panels. In my experience, if the vehicle wasn't optioned with something... Ford wasn't usually nice enough to leave the wiring there for it.

Remember that you'll also have to make a hole for the sound.

20130319_104651.jpg
 
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dirtrider

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Here is the picture of the plug on the amp.

On the top picture I posted you can see a purple wire, blue wire, green/black wire, and I believe yellow/black wire in a connector that presently isn't used. I was wondering if that was the harness for a subwoofer??? I see that the plug on your amp is different than the plug I have above. Did you not have this empty plug at all? What are the colors of the wires going to your amp?

From what I can see in your pics here it looks like you don't even have this empty connector??? I wonder if I just need some short harness though because it seems like the wire colors may be the same. In your 4th picture down I see purple, blue, and green going to that amp.
http://www.expeditionforum.com/153503-post3.html
 
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dirtrider

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I got my hands on the wiring diagrams. Those are connectors C405 and C465. They are not labeled as being for anything. I have no idea if C465 is for diagnostics or if those wires are something that could still be used for adding a factory subwoofer since the wire colors look the same as the factory option (but different connector - see prior posts). Here's what I've come up with so far.
img0638sm.jpg

img0636nk.jpg

img0634nj.jpg


So here is what I have now. You can see the empty connector. Violet, blue, green, etc wires.
img0589x.jpg


And for reference I am comparing the wires going to the factory amp from here (credit - bricekin). See the same violet, blue, green, etc wires.
20130314_195227.jpg
 
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bricekin

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Any update on what you've done? You said you were purchasing a Stealthbox. Is this still what you ended up doing?
 

01exp4x4

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This thread must be dead...

Too bad,
I would like to see somebody do this.

I also have an 03-06...

Anyone come up with a nice sub in a discrete spot?
 

GAINMOB

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The thread eneded in may...lol...the only options u have is the rear panel that are shown in the pics...thats where they are from factory...OR...the center console...that would have to be custom but can and has been done...the sub fires down in the bottom of the console and not sure how much space you'll have after...I think I may have saw something on the internet a couple yrs ago where the sold this as direct fit with a 10" sub

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01exp4x4

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I saw that Al & Eds Auto Sound in Southern California had the center console option available.
10" sub and no more center console storage after...
They also want $600.

I like the center console space too much.

I'm thinking that the back factory location is the spot...

Perhaps a 10 inch would do...
 

GAINMOB

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I either saw one for the center console or I saw a custom done for the center console...this was yrs ago....but the jl stealth box will fit...disregard the year it says its for and its a 10" sub...you won't find anything readily available for this becuz there wasn't a need and if there was it quickly died out...custom or jl...

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