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Old 04-15-2012, 05:02 PM
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Default Crew cab truck, subs up port drivers side?

Hello all,
I have a 2007 F250 4 door that I am putting 2 18in FI Q's in on 3k. I have by box design and am making my floor now. Box is 14.4cu tuned at 30hz with 15in port per cube (216) total. I wanted to run subs up port to drivers side for loading reasons and my truck responds well too that. Problem is my subs would be only 6in from the roof. (huge box) this would mean I couldn't remove them without taking box out. Anybody running subs forward port to drivers side in a large setup?

I feel like it will play lower and sound better to the ear with port to side vs port subs forward without doing a full wall but wanted experienced opinions.

My truck peaked at 30hz with one 15 in a sub forward port to driver side console and hammered to lows like no other. I am not big on numbers just want a low end monster.

Thanks
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Old 04-15-2012, 05:12 PM
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ive had success with woofers forward, port up. the only thing i noticed with that setup though was an increase in roof flex. sounded good. but that was only a single Fi Q 18. 6.5 cubes @ 30hz. not sure how the port being so close to the roof would affect tuning in your scenario, but its worth a thought.
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Old 04-15-2012, 05:15 PM
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With a box that big, you are going to want to get the subs forward. Trust me. I see a TON of guys that do subs up in gigantic boxes like that and it never works.

Get the box the length of the cab and run subs forward and ports up. You won't regret it.
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Old 04-15-2012, 05:50 PM
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Subs forward will not be a problem, but do you think port would be better up than on drivers side? The door would be about 12inched from port and if up only 6in clearance. Port is 9in x 24in
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Old 04-15-2012, 06:36 PM
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Originally Posted by SWIFT View Post
Subs forward will not be a problem, but do you think port would be better up than on drivers side? The door would be about 12inched from port and if up only 6in clearance. Port is 9in x 24in
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Even if you use the entire length of the cab the box will still be 6" from the roof? If you have that little room, just wall it and get subs and port forward.
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Old 04-15-2012, 07:00 PM
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Sorry, No it wouldn't be and I would lower it if I went wide. I have 60in of width. The box was 44in wide 35 tall but I was going to make the back wall of the box that extra width so I could bolt it to the back wall on each side without actually running bolts thought the inside to secure it. If I lower it and do port up I will definitely have to bolt though the box to secure it an I wanted to avoid leaks from over time stress even if siliconed. If I wall it it won't be totally sealed but will have beauty panels around it with foam surround the edges.
For music will the wall "effect" still have the freq response I am looking for from the fronts seats. I'm sure it would meter better but don't plan to compete. If I did I would have chosen a different sub.
Thanks for your help, I really appreciate it
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Old 04-15-2012, 07:11 PM
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I don't think you'll lose any "musicality" by walling it. I've heard some amazing setups walled. As a matter of fact, the very large majority of walls I've heard were dailys that were killing the lows.

I just think that if you're gonna lose that much cab that you might as well wall. It would be different if you wanted to try to save some of your back window. With 60" of width, I would think you could get close to the window line.

What kind of depth we talking? Like 24ish? 60 x 24 x 24 is like 20 cubes. That should be plenty. And you can stay below or at the window line. (2) 18's down low in the truck with a big fat ass port firing up in the middle would be sick. That's what I would do. Either that or a full on wall. No sense in anything in between.

This is my S-10 box and it's a slot, but it would look somthing like this...

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Old 04-15-2012, 07:26 PM
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Yeah depth is 27, I have to remove the door at 27 but would rather do that than build in truck. 24 may go through door. Man I swear I have done 4 different designs all that I thought was "it". Back to the drawing board
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Old 04-15-2012, 07:35 PM
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Remove the door? I guess you can do that on a ford. Chevy's doors are welded on. My box was 24x26x56 for my 2 18s and it would fit with 24 wide but not 26.

I would either just skip the BS and wall it. If not, drop the height, go wider and deeper if possible, subs forward port up. Also, I would make the port the entire width of the box and however long it needs to be. For example, 54 in wide, 3 in deep.
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But thanks for chiming in. Your opinion is duly noted.
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