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Old 08-01-2015, 02:52 PM
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Default GM Ext Cab - Ideal single 15 placement

My intent is to run a single 15 on about ~2000w in the back of an ext cab silverado. I'm hoping I can get 5 cubes out of the backseat without completely rendering it unusable. Up firing is not an option because I want to be able to still have a seat to throw stuff on.

I'm considering mounting the sub forward with the port firing to the driver side ext cab wall. Currently I have 2 shallow 12s downfired with the port to the side, and when I move the box so the subs are about 45 degrees horizontal the pressure seems to increase noticeably, but I get less low frequency extension as the subs seem to unload.

The main thing I want to know is what placement is best for a single 15 and its port. I'm thinking I should put the sub on the pass side with the port on the driver side and making it adjustable length so I can adjust to get the best loading off that door.

If someone is kind enough to put some thought into this I can also provide dimensions and pictures of what I'm working with.
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Old 08-02-2015, 02:59 PM
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bump..
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Old 08-02-2015, 03:05 PM
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I did this before, only with 3kw. Do this;

Remove the 40% single seat out od the back (out of the 60/40 split). Put a false floor in place, box on top of that. So behind your passenger seat is the box. Mine was angled so the front passenger seat leaned up against it in a comfortable spot. Sub up and port up worked well. You could do sub up port side also and fire into the middle of the cab if you wanted. I had a single Gen 1 soundstream xxx on a gp3k and it sounded great.
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Old 08-02-2015, 03:09 PM
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My generation silverado is different with the 60/40 seats - it was a single bottom seat, but that's beyond the point because my entire rear seat is removed except for the back of it. The top of the sub box is the "seat" now.

I'd like to stay away from up firing as I said in the original post I want to be able to put things on the box if necessary. Port up would be fine but the subs can't be up.

Have you seen anything with the sub forward port up or side?
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Old 08-02-2015, 04:33 PM
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Then yea do sub forward port side but leave enough room off the door so the port can breath
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Old 08-02-2015, 07:32 PM
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If it's feasible, you'll want the port firing opposite the listening position. So, if you want the better demo, fire it to the passenger side. If you want passengers to get the better demo, fire it to your side.
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Old 08-02-2015, 08:02 PM
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Quote:
Originally Posted by TaylorFade View Post
If it's feasible, you'll want the port firing opposite the listening position. So, if you want the better demo, fire it to the passenger side. If you want passengers to get the better demo, fire it to your side.
Yeah I've heard that a couple times, I've got the port on the driver side now, how much of a difference are we talking here? Would it even be audible? I could honestly give two shits about the passeger as I'm listening the one listening to it most of the time. I just want to get as loud as I can while considering port loading, sub loading, minimal rise, and cabin gain. This is going to be on music, I don't do competitions. I guess you could call my goal SQL.

How about sub placement? If I did sub forward would I want it on the driver or pass side of the truck, near the tranny mount in the middle is going to be off limits because the sub simply won't fit. I have about ~56 inches of width.
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Old 08-02-2015, 08:31 PM
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Quote:
Originally Posted by mitchell0715 View Post
Yeah I've heard that a couple times, I've got the port on the driver side now, how much of a difference are we talking here? Would it even be audible? I could honestly give two shits about the passeger as I'm listening the one listening to it most of the time. I just want to get as loud as I can while considering port loading, sub loading, minimal rise, and cabin gain. This is going to be on music, I don't do competitions. I guess you could call my goal SQL.

How about sub placement? If I did sub forward would I want it on the driver or pass side of the truck, near the tranny mount in the middle is going to be off limits because the sub simply won't fit. I have about ~56 inches of width.
If it was mine... I'd do sub forward behind my seat and port to the passenger side.
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Old 08-02-2015, 09:10 PM
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Quote:
Originally Posted by TaylorFade View Post
If it was mine... I'd do sub forward behind my seat and port to the passenger side.
sounds good ill use that as my baseline and try to fit my design around it.

if anyone is familiar with fullsize ext cab trucks and can tell me where they found the most cabin gain i'd appreciate it, right now it feels to be around 45hz but I haven't honestly tested it.
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