Check out my ported subwoofer box

[prochobo]

A few weeks ago, I posted here with plans for my box. I finally got around to building it and I think it's a beauty. Even though I haven't sanded it down and put finishing touches on it, I still think it's damn fine (well to me that is. . because I built it ). It was really fun putting it together too.

One thing I'm scared of though, I used PVC pipe for the port lengths and fastened it with construction grade adhesive. I hope that it's strong enough and the ports don't fall off like my rearview mirror did . Anyway, pics are below!

The plans:
http://www.prochobo.com/Pictures/ported%20box%20front%20revised.jpg
http://www.prochobo.com/Pictures/ported%20box%20side.jpg

The box:
http://www.prochobo.com/Pictures/box%20003.jpg
http://www.prochobo.com/Pictures/box%20004.jpg
http://www.prochobo.com/Pictures/box%20005.jpg
http://www.prochobo.com/Pictures/box%20006.jpg

 

[nboy22]

cool, how long did that take you? did you use 1" MDF? Kinda looks like it

 

[Zim Hosein]

Looks nice prochobo, what are you gonna cover it w/ ?

 

[prochobo]

Well I started in the morning at about 10 to get my supplies. 2 hours at Home Depot/running around getting stuff, then a couple more gluing/screwing/etc... I'd say 5-6 total today. Oh yeah, I didn't put the terminal cap on yet. Going to to it tomorrow to test out the sturdiness of the box.

BTW, I used 3/4" MDF.

 

[prochobo]

I might not cover it If I do, probably just some carpet (the usual)

 

[0roo0roo]

how did u come up with the specs for the box?

 

[nboy22]

What subs are you planning on using with the box?

 

[prochobo]

The subs are 12" Infinity Reference 1230w. I got the basic specs from the Infinity website, the subwoofer manuals. It's 4 cubic feet, ports tuned to 30hz.

 

[nboy22]

mmm somehow I predicted those subs! sames ones I use! Here's some pics of my setup (custom fabricated fiberglass sealed enclosures):

Pic 1
Pic 2
Pic 3

 

[PurdueRy]

Those ports are borderline too close to the back wall...other than that they look pretty good!

 

[prochobo]

Nice! A lot cleaner than my trunk. Is that dynamat? If so, does it help with the rattle? I've got a factory spoiler on my car and it sounds like crap from the outside with all the rattling and such.

 

[ThisIsMatt]

Why not cut the port holes to the outer diameter of the PVC and then slide them in?

 

[prochobo]

Originally posted by: PurdueRy
Those ports are borderline too close to the back wall...other than that they look pretty good!

Yeah, I had thought about that, but had too many constraints for space so I had to do them like that. They're about 3" from the back wall.

 

[prochobo]

Originally posted by: ThisIsMatt
Why not cut the port holes to the outer diameter of the PVC and then slide them in?

I thought of that and threw it away. My jigsawing skills aren't pro so one mistake and the piece is gone . . . The port holes are a little messed up too, but not too noticeable.

 

[nboy22]

Yeah... it's nice and clean, That stuff right there is E Dead sound deadening V.1 I think, I bought like 60 sq. feet of it and used it all, it does a decent amount of sound deadening, most of it I found out was coming from my bumper, so I lined some shims with the sound deadening material and put the shims in between the frame of the car and the bumper.. now it sounds a lot better than it did before. On the spoiler thing, I know exactly what you're talking about, one of my friends I had, had a 95 dodge neon and it rattles like a bitch, sounds nasty.

 

[prochobo]

Originally posted by: nboy22
Yeah... it's nice and clean, That stuff right there is E Dead sound deadening V.1 I think, I bought like 60 sq. feet of it and used it all, it does a decent amount of sound deadening, most of it I found out was coming from my bumper, so I lined some shims with the sound deadening material and put the shims in between the frame of the car and the bumper.. now it sounds a lot better than it did before. On the spoiler thing, I know exactly what you're talking about, one of my friends I had, had a 95 dodge neon and it rattles like a bitch, sounds nasty.

Cool, I'm going to make that my next project!

 

[nboy22]

yeah, My other project right now is making an amp rack and getting that capacitor and amplifier up off of the floor, i'm about 1/3 of the way done... it's so tedious and takes planning, and even with planning it always ends up giving me complications...... And on top of that project is putting a computer in the car with a 7" touchscreen.... I just need power to the computer and I'll be up and running!

 

[prochobo]

Originally posted by: nboy22
yeah, My other project right now is making an amp rack and getting that capacitor and amplifier up off of the floor, i'm about 1/3 of the way done... it's so tedious and takes planning, and even with planning it always ends up giving me complications...... And on top of that project is putting a computer in the car with a 7" touchscreen.... I just need power to the computer and I'll be up and running!

I know exactly what you mean. I can't count how many trips I made to Home Depot today, it seemed like we didn't have anything I needed.

I can't wait to test this box tomorrow! I hope it's a big improvement over the previous sealed box which was probably not built to specifications.

 

[IHateMyJob2004]

Originally posted by: prochobo
A few weeks ago, I posted here with plans for my box. I finally got around to building it and I think it's a beauty. Even though I haven't sanded it down and put finishing touches on it, I still think it's damn fine (well to me that is. . because I built it ). It was really fun putting it together too.

One thing I'm scared of though, I used PVC pipe for the port lengths and fastened it with construction grade adhesive. I hope that it's strong enough and the ports don't fall off like my rearview mirror did . Anyway, pics are below!

The plans:
http://www.prochobo.com/Pictures/ported%20box%20front%20revised.jpg
http://www.prochobo.com/Pictures/ported%20box%20side.jpg

The box:
http://www.prochobo.com/Pictures/box%20003.jpg
http://www.prochobo.com/Pictures/box%20004.jpg
http://www.prochobo.com/Pictures/box%20005.jpg
http://www.prochobo.com/Pictures/box%20006.jpg

Where is the internal bracing? A box that big needs it. You want hte box as rigid as possible for best SQ

 

[nboy22]

Originally posted by: prochobo

Originally posted by: nboy22
yeah, My other project right now is making an amp rack and getting that capacitor and amplifier up off of the floor, i'm about 1/3 of the way done... it's so tedious and takes planning, and even with planning it always ends up giving me complications...... And on top of that project is putting a computer in the car with a 7" touchscreen.... I just need power to the computer and I'll be up and running!

I know exactly what you mean. I can't count how many trips I made to Home Depot today, it seemed like we didn't have anything I needed.

I can't wait to test this box tomorrow! I hope it's a big improvement over the previous sealed box which was probably not built to specifications.

Additionally, what kind of car are you planning on putting this in?

 

[Specop 007]

Originally posted by: nboy22
Yeah... it's nice and clean, That stuff right there is E Dead sound deadening V.1 I think, I bought like 60 sq. feet of it and used it all, it does a decent amount of sound deadening, most of it I found out was coming from my bumper, so I lined some shims with the sound deadening material and put the shims in between the frame of the car and the bumper.. now it sounds a lot better than it did before. On the spoiler thing, I know exactly what you're talking about, one of my friends I had, had a 95 dodge neon and it rattles like a bitch, sounds nasty.

I had less then good luck with Edead. I had heard some less then admirable stuff about E in the past but wanted to try some of there stuff and form my own opinion.
I wont be using any E products in the future, accessories or otherwise.

 

[ThisIsMatt]

Originally posted by: prochobo

Originally posted by: ThisIsMatt
Why not cut the port holes to the outer diameter of the PVC and then slide them in?

I thought of that and threw it away. My jigsawing skills aren't pro so one mistake and the piece is gone . . . The port holes are a little messed up too, but not too noticeable.

Use an expanding glue, like Gorilla Glue, and/or caulk in any gaps. Use a skinnier jigsaw blade so you can turn it more easily.

 

[Specop 007]

Originally posted by: ThisIsMatt

Originally posted by: prochobo

Originally posted by: ThisIsMatt
Why not cut the port holes to the outer diameter of the PVC and then slide them in?

I thought of that and threw it away. My jigsawing skills aren't pro so one mistake and the piece is gone . . . The port holes are a little messed up too, but not too noticeable.

Use an expanding glue, like Gorilla Glue, and/or caulk in any gaps. Use a skinnier jigsaw blade so you can turn it more easily.

Cut it just a touch under sized and start sanding. Best way to make sure you dont go over if your not good with a jigsaw.

 

[prochobo]

I kinda overlooked bracing on purpose. Stupid move, I know, but I'll see how things turn out. I also thought that since the box is ported, the internal pressure won't nearly be as much as a sealed box which I had before, but was just fine.

It's going in a '96 Honda Accord. It will be a very snug fit in the back of the trunk.

 

[nboy22]

Originally posted by: Specop 007

Originally posted by: nboy22
Yeah... it's nice and clean, That stuff right there is E Dead sound deadening V.1 I think, I bought like 60 sq. feet of it and used it all, it does a decent amount of sound deadening, most of it I found out was coming from my bumper, so I lined some shims with the sound deadening material and put the shims in between the frame of the car and the bumper.. now it sounds a lot better than it did before. On the spoiler thing, I know exactly what you're talking about, one of my friends I had, had a 95 dodge neon and it rattles like a bitch, sounds nasty.

I had less then good luck with Edead. I had heard some less then admirable stuff about E in the past but wanted to try some of there stuff and form my own opinion.
I wont be using any E products in the future, accessories or otherwise.

Yeah I don't believe it's high grade stuff.... I Might try FatMat sometime, I've already had a few random slabs of my E-dead come off on me which is dissapointing, but it does sound a bit better than before... I actually don't believe the material helps much.. I believe it's more about finding the empty spaces and filling up where two pieces of material are rattling against each other.