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Old 02-15-2013, 07:38 PM   #1
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New subs: where,what, how?

I have a 4 door jk wrangler unlimited and want to put a sub in it. I currently have access to 2 12" and 1 10" subwoofers. I want to put one in (don't know if 12 or 10).

The 10 was in a pickup and has a small amp attached to a mount. If I go this route I can separate the amp and place it somewhere else. Where would be the best place to put this stuff? The 10" has a plastic cover on it so I don't have to worry about scratches or breaking the cone.

The 12's are in one box. What kind of box would I need to make/ buy ? It would need to be weather resistant but apart from that its all fair game.

What have y'all done? Anything work better than other ideas/set ups?

Thanks

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Old 02-15-2013, 11:15 PM   #2
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use the 12", sell the 10" with the amp and enclosure and the second 12". take that money and use it for an enclosure, amp, and wiring. a single 12" is all you need in a wrangler unless you are a bass junkie like me.

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Old 02-18-2013, 11:05 AM   #3
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I may go ahead and sell the10 and amp and use BOTH 12's (I like some thud ). What kind of box should I use? I would need it to be able to survive the elements (I ride topless and doorless as soon as it gets warm enough and it occasionally rains on me)
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Old 02-18-2013, 06:24 PM   #4
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I would build a box with 1/2" or even 3/4" MDF and then coat it with some fiberglass resin to make it waterproof. If you wanted you could even bondo finish it and paint/bedline it. Ported boxes will be louder, but are more difficult to plan and build. Sealed boxes are sill quite loud when made correctly, and are easier to make; many audiophiles would say that sealed boxes sound better too. The sub's manufacturer should have recommended sealed box volumes as well as vented or ported box volumes - for best results, try to make your box as close to this volume as you can.
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Old 02-18-2013, 08:38 PM   #5
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For free plans on building you own enclosure you can go to the forum on caraudio.com and get plans
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Old 02-22-2013, 05:25 PM   #6
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Thanks everyone!

I think I'm going to use both of the 12" subs because the 10" with a 350w amp will not keep up when the top and doors are off.

with that being said, does anyone have a custom box in a 4door jeep? Where might the best place to put the box?

I will most likely make my own box using MDF wood and have the subs firing downward.

Amp placement?

Any responses are appreciated
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Old 02-26-2013, 06:11 PM   #7
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I tried to find ways of fabing my stock one and checked the web for designs but couldn't find anything that could fit in a small space. I went big and bought the JL Audio Stealth box. WOW a little expensive but what an awesome unit.
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Old 03-01-2013, 08:42 PM   #8
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change in plans

Quote:
Originally Posted by solidgold View Post
I tried to find ways of fabing my stock one and checked the web for designs but couldn't find anything that could fit in a small space. I went big and bought the JL Audio Stealth box. WOW a little expensive but what an awesome unit.
That looks really cool! Don't know about that price though. I'm starting to consider selling the two 12's and putting that money towards one of the custom fit boxes.

I would really like to have the subs hit hard though What size would be best?

as always i would like to save as much space as possible.

Thanks
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Old 03-11-2013, 10:13 PM   #9
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The subs are to your own preference of course, but as far as making your own box there is such a thing as marine grade plywood. I work in a cabinet shop and have built subwoofer boxes, but didn't know about this material until last year. Ported boxes use air to make a deeper sound. This would not be effective in a Jeep with the top off.
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Old 03-16-2013, 07:01 PM   #10
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I am going to go ahead and use the 10" sub that I have for now. It already has a box and amp so I will see how it sounds and what not. If I end up not liking it I will switch out the sub and possibly the amp if need be.

I am working in it as we speak and will hopefully have it all mounted by the end of tomorrow. I decided to not put it on the tailgate though. I will post pics when it is finished
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Old 03-16-2013, 08:43 PM   #11
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I had (2) 13" JL W3v3's and a 500/1 JL amp in my trade-in vehicle... sounded fantastic but this stuff takes up a ton of space. I literally lost 70% of my rear hatch space in my WJ. I sold them as I had no use for them in my new 13' JKU. I suggest to try the 10" and see if you like it. If not, get into a 10" with high SPL and a bigger amp. Realistically, when the doors and top are off you won't hear much anyway... try to get the sound and maximize your storage space.

I'm going to swap the speakers in my new ride but that's it. Hope I don't get the urge to waste more money in audio, in a vehicle that has bad mounting locations

Good luck with your project.
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Old 03-17-2013, 12:33 PM   #12
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A few tips:
Don't use plywood for subs - it flexes too much and you'll lose bass response. MDF is the material of choice; 3/4" will suffice in most cases, but no thinner than that. I've used high-density plywood and it works alright, but it's really heavy and harder to work.

For best results, you can't just slap together a box of any size and drop any sub in it. All subs are designed to work best with a certain volume of air behind them. Find out what that is for your sub (spec is listed as "Vas") and try to keep the box as close to that as possible. Remember to subtract the space taken by the sub itself in your calculations.

A perfectly cubical box isn't good either - the so-called "golden ratio" is 3:5:8 but in my experience it's not THAT critical. Make your three sides different lengths and you should be alright.

Finally, if you're doing a ported box, again, you can't just cut a hole and expect great results. It's called a TUNED port for a reason: the size and length of the port are designed to resonate to a particular frequency and also need to match the design of the sub, the size of the box, and the frequency desired. A ported design is also typically 40-50% bigger than a sealed box for a given sub.

There are other specialized designs you can use to get more thump out of less space, too.
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Old 03-17-2013, 07:15 PM   #13
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Thanks st1264 and soundy! I appreciate.

Today had some unexpected projects that needed attention before I could play with the sub project. Good news is I was able to complete the mounting brackets and have done a successful mock up of the sub placement.

As I stated earlier I am using the 10" sub that I had lying around. It was already built with a custom enclosure so I was able to simply trim it up a little. I plan in getting all the wires I will need this week and hopefully this weekend I will have it just about done.

Pm me with any questions you may have

Here is a quick pick of the mock up...
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Old 03-17-2013, 09:58 PM   #14
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^^^ That looks like a nice, clean, space saving install. Hope you get the sound out of it that you desire
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Old 03-18-2013, 08:58 AM   #15
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^^^ That looks like a nice, clean, space saving install. Hope you get the sound out of it that you desire
Thanks man. I hope so to. My back up plan is to hopefully sell my old system and use that money to get a bigger sub and possibly amp. I would rather have this set up work though, there are a lot of other things I am wanting to do to the jeep

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