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  #1  
Old 10-23-2012, 02:05 PM
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Default Walled F250 3 -18in SP4's

Well Figured I would add my Build log here. I have changed it several times over the last year and am now happy with the outcome, well for now. LOL

My truck is a 2007 F250 Harley Davidson Edition
ARP head studs, EGR delete, Oil cooler, Full 4in Exhaust, Innovative custom tuning, Suncoast Billet race trans and converter.





The goal here is to be very loud, low and sound good doing it. I'm hoping for 154's but want to do it peaking low, I would like 152's+ around 30hz, but main goal is to sound good, this will not be a burp box but built for demos.

Updated Equipment List for this build

Power / Electrical
Mechman 370amp alternator, over 200amps at idle.... props to Mechman
Adjustable voltage regulator set at 14.7v
4 XS D3400's, 4 runs of power, 2 runs of ground to back batteries (will add 4 more XP3000's when other amp is in)
wiring is Knu ofc 1/0 and also a 100+ft Coleman 2/0 ofc stage cable

Head Unit
Pioneer deh80-prs (running active)

Mids and Highs
Alpine PDX 4.150 on mids, Digital Designs SS2 on highs
2 Rockford Fosgate Punch Pro 6.5's
2 Rockford Fosgate Punch Pro 8's
2 Crescendo FT1 super tweeters, may add 2 more

Subs, box and sub amps
1 Crescendo BC 5500 at .5ohm (will add the 2nd amp after Holidays and run them strapped at 1ohm .5 each)
3 FI SP4 18's, dual 1, cooling, spaced spiders, loaded
The wall will be completely double walled 3/4in 13 ply Russian Baltic Birch with 1/2in all thread bracing
20cuft, 277in of port tuned at 31hz.

let the pics begin. I do all my builds by myself. I have no one to blame if it sounds like ass, lol.

The used a total of 7 sheets of Birch with very little scrap at all.
here is my last setup that was 14cu tuned at 30hz and it did a 149.8 at 30hz and 150.6 at 35hz and sounded great.


False floor that will hold the box and batteries and wiring will be underneath it.


This shows battery and amp placement, this is the old box but nothing is changing besides the actual box / wall


Doors hold one Rockford 6.5 pro Audio Mid and one crescendo FT1 tweeter


head unit, radar detector, volt meter etc


amp placement


start cutting and doubling up. Entire box is double walled
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2012 F250 Lariat, lifted on 22's and 35's
4 DSS Ethos 18's flat wall, 2 Ampere Audio 7500.1's
Mechman 370, 9 batteries, Rockford Punch Pro front
Team DSS / Team Ampere Audio
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  #2  
Old 10-23-2012, 02:06 PM
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nice!
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  #3  
Old 10-23-2012, 02:10 PM
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Baffle


rounded inside edges


monster







assembly mock up


Looking up into port showing the 45's flowing into it


Looking down in box through port opening

Port assembly\


Paint and sanding port


How about some bracing




Starting to Glass and resin inside, smooting the flow into the port


Assembled and ready, all corners rounded and smoothed inside, rounded port inside and out, box is a beast.
well over 400lbs empty

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2012 F250 Lariat, lifted on 22's and 35's
4 DSS Ethos 18's flat wall, 2 Ampere Audio 7500.1's
Mechman 370, 9 batteries, Rockford Punch Pro front
Team DSS / Team Ampere Audio
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  #4  
Old 10-23-2012, 02:11 PM
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The suspects


empty truck


This should be interesting



Hell I can do this

wall install, 3 18's - YouTube

Perfect fit





1/4in on each side of box at door handle


wow


Subs installed


Time to seal it off and make beauty panels
sorry for the shitty photo


I made the panels extend to the B-pillar. Not sure if this helped but its nasty on the low notes and moves a ton of air for one amp.






I will still add sme leather accents to the face of the wall. But im in no rush now.

It sounds amazing and is loud as piss. Not sure what it will meter but the goal was 152's on music and doing it low. Remember this isnt built for numbers but to be loud to the ear. My last 150 setup sounded louder than some 154 setups I sat in...... honestly. I dont know it may meter way higher than I am thinking. Its hard to breathe sitting in it sometimes.

here are a couple vids before it was sealed off. Its louder and lower sealed off. I will get new videos and some hair tricks on vid soon.

3 18' new setup - YouTube
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2012 F250 Lariat, lifted on 22's and 35's
4 DSS Ethos 18's flat wall, 2 Ampere Audio 7500.1's
Mechman 370, 9 batteries, Rockford Punch Pro front
Team DSS / Team Ampere Audio
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  #5  
Old 10-23-2012, 02:17 PM
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Dang looks nice, but I was wondering if there is any significance in the small pieces of wood between the subs.

The piece that's in the bottom left
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  #6  
Old 10-23-2012, 02:18 PM
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Looks good man! I hope you at least reach your goal and then some
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  #7  
Old 10-23-2012, 02:20 PM
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nice!



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  #8  
Old 10-23-2012, 02:26 PM
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Quote:
Originally Posted by xnewbx View Post
Dang looks nice, but I was wondering if there is any significance in the small pieces of wood between the subs.

The piece that's in the bottom left
YES!!
They add some serious bracing without having to eat the space of a long 45. I use liquid nails and then one screw to each side. I do this on alot of builds.
The round dowels wont hurt airflow and they can be added once complete and they help brace both pieces they connect to.

here is my last box. Mofo was seriously solid
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2012 F250 Lariat, lifted on 22's and 35's
4 DSS Ethos 18's flat wall, 2 Ampere Audio 7500.1's
Mechman 370, 9 batteries, Rockford Punch Pro front
Team DSS / Team Ampere Audio
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  #9  
Old 10-23-2012, 02:29 PM
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Quote:
Originally Posted by xnewbx View Post
Dang looks nice, but I was wondering if there is any significance in the small pieces of wood between the subs.

The piece that's in the bottom left
Sorry if you meant the rectangle pieces that are rounded actually between the subs then Im not sure honestly. There was a significant less "thud" sound when hitting on the baffle with my palm after adding them. I like to brace, hit and listen and brace more anywhere I hear a more hollow sound. lol, call it overkill I guess
__________________
2012 F250 Lariat, lifted on 22's and 35's
4 DSS Ethos 18's flat wall, 2 Ampere Audio 7500.1's
Mechman 370, 9 batteries, Rockford Punch Pro front
Team DSS / Team Ampere Audio
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The Following 3 Users Say Thank You to SWIFT For This Useful Post:
BKNIGHTS (10-23-2012), legend654 (11-17-2012), xnewbx (10-23-2012)
  #10  
Old 10-23-2012, 02:36 PM
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Very nice build!!!
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*Team Kinetik* *Team Crossfire*
Subs- 2 18" Crossfire XS-SPL V.2s
Amps- Crossfire XS-8X
Wire- 6 runs Stinger
Batts- Kinetik HC16V (7) - Juicebox LiFePO4 18V .5KW
154.1 @31 hz, 148.3 @ 16hz 30 second average (legal)
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