trunk question

[cuetip]

right now i have a Digital Design 3515, and of course ported its the only way to go and running off an RF T1000db with RF wire through out, and soon to b 0 gauge but right now its just a little 4 gauge

 

[TigBitties]

15's are never overkill to a bass head! LOL... Nothing like making a whole trunk completely useless by making it into an air chamber for really big speakers!

Your right tho! Lots of math and planing involved. I've toned it down since my teenage years and only rock one really loud 12" now.

well how your average person runs a 15, you can make a 12 sound if done right. i had a single 12 and it was more than enough, the box also took up the entire trunk lol

OP READ THIS
http://ddaudio.com/caraudio/Woofers/3500/Specs.aspx

 

[cuetip]

ok will do might have to measure, im one of those bass heads that likes to go big or go home, i did have a 3518 but it took up my whole back seat so i got rid of that for a 15 but i might get a couple 18s and begin a nice build but not in my civic bc thats just retarded

 

[eggyhustles]

What sub are you using, and is it ported or sealed, and what is the cubic feet of your box? Some picks of your equipment would be good.

Also, what amp are you using? It sounds like you might be under powering the sub. If you open anything in your car, like a trunk, door, or window and it gets considerably louder, then the amp is probably not powerful enough to move the sub the way it was designed. RMS ratings and Peak ratings are very different from each other.

Give us some more info on your system please.

Power is somewhat meaningless when it comes to subs. box is much more important.

OP, ditch the 15 and get a 12. It's louder because once the trunk is open, there's more air space for the sub to breathe. You're choking the sub in a small box in an even smaller trunk.

 

[Cooper76]

Wow... 4 cubic feet on that sub. It's been along time since I've played with 15's! But I do know DD's are good. My buddies Shop is in the process of being able to sell there products. We just have to place the first order now.

You should be fine with 4 gauge wire on the amp. It wouldn't be a bad Idea to get a dedicated battery mounted close to the amp too.

Are you using prefab boxes or building your own?

 

[cuetip]

ive already went through the 12 stage i really dont care for them i had 2 10s that were crazy loud i just like big woofers but still its alot louder now that the 15 is n my trunk

 

[cuetip]

box built on my own, im saying i had a buddy build it from me since i have no idea about tuning a box or any of that s**t, but it is a specially made box, its actually quite a nice box

 

[Cooper76]

Power is somewhat meaningless when it comes to subs. box is much more important.

OP, ditch the 15 and get a 12. It's louder because once the trunk is open, there's more air space for the sub to breathe. You're choking the sub in a small box in an even smaller trunk.

UUMMMMM... Power plays a lot in the design of a sub woofer.

Yes, box design has a lot to do with it too, and your prob right in saying that he is choking the sub if his box is too small.

That sub has a recommended 4 cubic feet! That's nearly as big as my old 18's I used to compete with.

 

[Cooper76]

Cuetip, You'd prob love the civic we just had in the shop! It's an 04 coupe with a wall of six JL 12W6v2 in it.

 

[TigBitties]

a CORRECT 15 inch box thats ported will take up your entire trunk. i think it said 4 cubic feet, and thats internal volume so you have to calculate that in. a couple 18s you need a suv or truck bed for

but honestly a 12 would be better, i can confidently say that my single 12 that was done correctly and powered correctly hit harder than your 15

 

[Cooper76]

a CORRECT 15 inch box thats ported will take up your entire trunk. i think it said 4 cubic feet, and thats internal volume so you have to calculate that in. a couple 18s you need a suv or truck bed for

but honestly a 12 would be better, i can confidently say that my single 12 that was done correctly and powered correctly hit harder than your 15

I agree with you. A single 12' properly set up can sound better then a 15" or 18" in a civic. Start playing with aeroports, and then your on a whole new level of loud!

 

[TigBitties]

and line drivers

 

[Cooper76]

and line drivers

 

[eggyhustles]

UUMMMMM... Power plays a lot in the design of a sub woofer.

Yes, box design has a lot to do with it too, and your prob right in saying that he is choking the sub if his box is too small.

That sub has a recommended 4 cubic feet! That's nearly as big as my old 18's I used to compete with.

Box is more important than power. Doubling his power now would net him 3db. Proper box would net him 12db+ depending on how small his current enclosure is.

 

[TigBitties]

lol it was my job to know this stuff