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Old 03-26-2013, 03:01 PM   #1
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Alpine Amp & Sound Ordnance Subwoofer

What did “Brown” deliver for me today? My Sound Ordnance B-8PT powered subwoofer.

The KTP-445U was $149.99 from Crutchfield:
Alpine KTP-445U "Power Pack" Upgrade any car radio to 45 watts RMS X 4 at Crutchfield.com

The B-8PT was also $149.99 from Crutchfield:
Sound Ordnance™ B-8PT 120-watt compact powered subwoofer at Crutchfield.com

I noticed that on their website there were some “scratch & dent” on this sub for $119.99. So, I went that route, utilized my points from that site & final cost to me was $113.99. I opened the box as soon as it came & the thing looks brand spanking new…I see neither a dent nor a scratch.

I plan on installing both the Alpine KTP-445U & the B-8PT (keeping my OEM HU) this weekend utilizing the following post as guidelines :

The TJRod sticky: Installing aftermarket Radio in TJ write up

CJ7GoldenEagle: http://www.wranglerforum.com/f5/dash...al-144267.html

Phokur: Easy Console 8" Sub Upgrade (Sound Ordnance B-8PT)

igf101: http://www.wranglerforum.com/f33/ins...jk-177649.html

All of my other speakers have been upgraded to Polk Dxi (525 in dash & 650 in Soundbar) along with Super Tweeters on the dash & the Kicker Plug & Play replacement sub in the console (which is were the B-8PT is going): Finished my Polk Audio install


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75k miles (6/28/13) 04 Sport, 4.0L 5spd, D44/30-186mm front, 31" Goodyear Wrangler MR/T
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You know you drive a TJ when you have the parts for the mod, the right tools for the job, a BFH & still need a Sawzall to get the job done!
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Old 03-29-2013, 07:50 PM   #2
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Just wondering how the install on the B8PT was going. I was going to order one but had to replace the battery in the wifes expedition. Good thing I didn't click the place order button! Anyways I have to live this install through you! How does it fit, sound etc...

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Old 04-01-2013, 04:05 PM   #3
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^^ Ruth, sorry about the delay in posting but I Got-R-Done (sorry to read about the battery....always seems to be something or another. ).

Well...B-8PT swap was really, really quick & easy. Removed the center console & OEM Sub enclosure (appx: 15 min)before work with 10mm socket, T30 & a Phillips head screw driver. This link, How To Replace The Factory Subwoofer - JeepForum.com is a good one if you never have done this.

I sat at my desk at work, clipped the wires & connected the harness as described by Phokur in the 1st post above. Pretty much spot on! Since I was keeping my OEM HU I utilized the high level inputs from the rear speakers to connect my new sub. I called Crutchfield to double check which wires to use (L/R Rear Speakers recommended) and also to inquire about a replacement control knob (last pic) for the new sub that was ran over, when I dropped it in the driveway, by my lovely bride in her Mustang. I really like Crutchfield, they are sending me a new one, no charge…that is great support! Anyway, I removed the rubber pads from the bottom of the OEM sub & stuck ‘em to the bottom of the Sound Ordnance for tighter fit, air circulation and to prevent vibration on the floor panel.

I also added thick foam rubber strips on each side for more support & to stop vibrating/rattling. Plugged it in and Bam…I love this thing (Anybody want a slightly used 6.5 Kicker Plug & Play ).

If you are replacing the OEM sub you will need to change the Power Mode to “Remote” & adjust the Level, Base EQ, Phase & Freq accordingly before reinstalling back into the Center Console.
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75k miles (6/28/13) 04 Sport, 4.0L 5spd, D44/30-186mm front, 31" Goodyear Wrangler MR/T
Alice the Beagle - "I wanna ride in the Jeep, I'll give you my bone."

- Semper Paratus
You know you drive a TJ when you have the parts for the mod, the right tools for the job, a BFH & still need a Sawzall to get the job done!
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Old 04-01-2013, 04:09 PM   #4
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Amp install

Installing this amp was much more difficult for me than I expected…not complicated, but a whole lot of colored wires (some faded) & being color blind doesn’t help.

Utilizing TJROD’s sticky was extremely helpful in removing the HU. The only things I think I may have done different was not removing climate control & leaving the radio front screws in while I removed the 10mm retaining nut. For me it seems to have taken some of the tension off of the rear nut, then I could remove the screws, pull out the HU, unplug the Antenna & Harness.

This is where it became tricky…like I noted, I have a decreased ability to see certain colors (and also made my Military choices very limited as well ) and some of those wires I swear looked alike. Lucky for me the speaker wires were electrical taped together per speaker. So double checking each of the taped wires against the Schematic Diagram 10.2.2 pg 195 in the FSM , I could, with mild reservation, cut/connect the wires correctly. If you are keeping the OEM HU you have to cut the RCA’s off & connect them to the radio side.

There is also a “Blue” wire that is on the same strand as the RCA’s that needs to be attached to the remote turn on (for me it was a “Green” wire on the harness). Connected my ground, power supply, turned on the HU & it all worked…brilliant!

Complete the Switch Settings for High Pass Filter, Input Config, Signal & Gain. I used my Ipod to do that. Since I had added extra speaker wire, as recommended on the list by igf101 post, I was able to secure the amp under the steering column nice, neat & out of the way.

After that all that was left to be done was to put my dash pieces back on & enjoy the tunes .
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75k miles (6/28/13) 04 Sport, 4.0L 5spd, D44/30-186mm front, 31" Goodyear Wrangler MR/T
Alice the Beagle - "I wanna ride in the Jeep, I'll give you my bone."

- Semper Paratus
You know you drive a TJ when you have the parts for the mod, the right tools for the job, a BFH & still need a Sawzall to get the job done!
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Old 04-01-2013, 05:38 PM   #5
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We have the same amp:
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Old 04-01-2013, 06:06 PM   #6
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^^...That is an awesome place. Man that is a big glove box.
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75k miles (6/28/13) 04 Sport, 4.0L 5spd, D44/30-186mm front, 31" Goodyear Wrangler MR/T
Alice the Beagle - "I wanna ride in the Jeep, I'll give you my bone."

- Semper Paratus
You know you drive a TJ when you have the parts for the mod, the right tools for the job, a BFH & still need a Sawzall to get the job done!
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Old 04-02-2013, 12:21 AM   #7
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Thanks for the update. Looks like all went well. I have an aftermarket hu and the Polks seem to do great with it so I decided not to go with the alpine amp for them but still going to get the sound ordnance sub when funds allow. The only difference is I don't have the factory sub enclosure I have the blue insert for storage instead. So many mods such little time and money!
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Old 04-02-2013, 08:58 AM   #8
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^^. Ruth, I really think you will like the B-8PT, this is my 2nd one (diff vehicles) & there is more than plenty Bass for me. There is an updated version of it which also cost a bit more: Alpine Amp & Sound Ordnance Subwoofer My only concern might be that you may have to tone the woofer down to really hear the Polks if there isn't a bit more power for them...m

I really like the way it is hidden away in the center console. Makes me think of my grandfathers two rules regarding working on vehicles.

- #1. The K.I.S.S. (keep it simple stupid ) rule &
- #2. Build it like a "Wolf in Sheep's clothing" so as not to show it off until you need it. He meant it more toward "horse power" improvement...but it works for me in this case because it all looks like the original equipment and your can't see anything except the tweeters on the dash & the Polks in the Soundbar...but then again, locks only keep "honest people honest" for so long & lets face it if someone really wants to take it they will

Look forward to seeing how you like it

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75k miles (6/28/13) 04 Sport, 4.0L 5spd, D44/30-186mm front, 31" Goodyear Wrangler MR/T
Alice the Beagle - "I wanna ride in the Jeep, I'll give you my bone."

- Semper Paratus
You know you drive a TJ when you have the parts for the mod, the right tools for the job, a BFH & still need a Sawzall to get the job done!
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