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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY How to build a Corner Subbox



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  DIY How to build a Corner Subbox
M3Tuner44
06-02-2012
So I wanted to build a sub box for the 335i but didn't want to pay $300 for whats already out there. I have built a bunch of these before and I knew I wanted something stealthy and not to abrupt when you open the trunk. So I went for a simple corner sub.

To start lay blue tape in...
  #22  
By VMRWheels on 07-06-2012, 02:29 PM
NICE WORK. I'm surprised it doesn't move. I personally would've made the box a bit thicker to really give the depth in sound. But, obviously it'll be much harder, time consuming and costly. Great work overall!
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  #23  
By M3Tuner44 on 07-06-2012, 08:45 PM
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Quote:
Originally Posted by VMRWheels View Post
NICE WORK. I'm surprised it doesn't move. I personally would've made the box a bit thicker to really give the depth in sound. But, obviously it'll be much harder, time consuming and costly. Great work overall!
It doesn't move a bit. It sits right into the tray so it has a little grove to sit in. vIts actually a little difficult to remove, thats how well its in there. Ive done several boxes tis one in 7 layers and other 10 layer boxes and they sound the to me. Im sure most people wouldn't say hey is that a 10 ply sub box cause I can hear the difference, but there are some with a trained ear that may be able to hear a difference in sound.
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  #24  
By odeylami on 07-12-2012, 11:34 PM
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looking for carpet

just built my box and i need some carpet. also looking to downgrade my sub as the only one i had was a competition woofer that had some heft to it.

anyone know where to find some oem bmw gray trunk carpet?

the sub i have didn't sound so well inside the enclosure because the motor is so large and takes up lots of airspace. any suggestions for woofers with a good thump ? w3's?
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for comparison purposes...lol
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  #25  
By USAF Rick on 07-17-2012, 12:13 PM
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That's an awesome looking box. I'm interested in making this a project for myself but I don't know how the fiberglass layers work. What did you exactly do to get that mold done? And where can I buy all of the materials?
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  #26  
By odeylami on 07-17-2012, 12:25 PM
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Smile

Quote:
Originally Posted by USAF Rick View Post
That's an awesome looking box. I'm interested in making this a project for myself but I don't know how the fiberglass layers work. What did you exactly do to get that mold done? And where can I buy all of the materials?
Everything can be bought from Lowe's . I found the felt from a place called Joanna fabric

I downgraded my subwoofer to a kicker cvr 12 from an audioque hdc312 plan on building another box for the right hand side for one more 12 has anyone done this

Here's the final product . The build for me was quite costly because because I built the box for my audioque woofer which weighs about 60 lbs... Had to put lots of layers
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  #27  
By USAF Rick on 07-17-2012, 12:34 PM
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Quote:
Originally Posted by odeylami View Post
Everything can be bought from Lowe's . I found the felt from a place called Joanna fabric

I downgraded my subwoofer to a kicker cvr 12 from an audioque hdc312 plan on building another box for the right hand side for one more 12 has anyone done this

Here's the final product . The build for me was quite costly because because I built the box for my audioque woofer which weighs about 60 lbs... Had to put lots of layers
Okay sweet, thank-you I'm going to look more into this.
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  #28  
By e90TiAg335i on 07-18-2012, 10:49 AM
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[quote=odeylami;12341366]Everything can be bought from Lowe's . I found the felt from a place called Joanna fabric

I downgraded my subwoofer to a kicker cvr 12 from an audioque hdc312 plan on building another box for the right hand side for one more 12 has anyone done this QUOTE]

I've built a few for e90s and e92s. Pm That201Boy for some pics.
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  #29  
By odeylami on 07-18-2012, 10:51 AM
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Do you build the box over the battery compartment cover or remove it then build it
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  #30  
By M3Tuner44 on 07-18-2012, 09:37 PM
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Quote:
Originally Posted by odeylami View Post
Do you build the box over the battery compartment cover or remove it then build it
Yea I have done those as well. I didn't do it for my car cause I have plans for that side.
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  #31  
By odeylami on 07-19-2012, 10:40 PM
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I have a box that will be done here soon for the right hand side if anyone wants to buy it when its completed. i spent hours building this box and when completed will look similar to the left hand side thats pictured above. the box and woofer can be had for 350. let me know if anyone is interested. the subwoofer is a kicker comp cvr 12. bought it a couple of days ago and still have the box and all
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  #32  
By e90TiAg335i on 07-21-2012, 09:29 AM
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Quote:
Originally Posted by odeylami View Post
Do you build the box over the battery compartment cover or remove it then build it
Remove the cover then build.
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  #33  
By revlimit on 08-29-2012, 12:50 PM
Any pros or cons having the box on left o right hand side?
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  #34  
By M3Tuner44 on 08-29-2012, 10:27 PM
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Quote:
Originally Posted by revlimit View Post
Any pros or cons having the box on left o right hand side?
Nope just did it that way since Im putting something else on the other side.
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  #35  
By itchycow89 on 09-01-2012, 11:02 PM
looks great
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