How To Guide How to build your own BMW Z3 Sub Woofer Box

Susan

Susan

Dedicated Member
Joined
Nov 20, 2013
Points
29
Location
Central Coast
Model of Z
Z3
Sub box

What you will need
  • 5mm MDF board
  • 15mm MDF board (for Sub ring)
  • 20mm think EVA Foam
  • Small screws
  • Wood glue
  • Silicone sealant
  • 10mm thick Wood (for support blocks)
  • Sub carpet
  • Speaker terminal cup
  • Spray glue
  • Leather or weather proof Vinyl
Tools you’ll need
  • Jigsaw
  • Screwdriver
  • Drill and drill bits to pre drill holes
  • Pen or pencil
  • Sandpaper
  • Staple gun and staples
  • Hacksaw blade (for cutting foam)

Cut all pieces and pre drill all holes.

Cut out the shape of the Speaker terminal cup in the back of “A”.
upload_2014-10-14_21-53-59.png


Screw 2 “H” support blocks to “B” (Fig 1)
upload_2014-10-14_21-55-41.png

Screw “A” “C” and “D” to the “H” support blocks (Fig2)
upload_2014-10-14_21-56-21.png

Screw “D” “E” & “F” to support blocks “I” to top and bottom (Fig 3)
upload_2014-10-14_21-57-8.png

Screw in support blocks “J” (Fig4)
upload_2014-10-14_21-57-54.png

Screw Support block “K” into top leaving a 5mm gap at the back and side.
upload_2014-10-14_21-58-40.png

Turn top over and screw Sub ring to top of Sub top.
upload_2014-10-14_22-1-22.png

With a hacksaw cut the foam to cover around the sub ring.
upload_2014-10-14_22-1-50.png

Then cover it in leather or Vinyl and staple down the edges.
upload_2014-10-14_22-2-32.png


upload_2014-10-14_22-2-49.png

Fit the top on and screw into “K” on both sides.
upload_2014-10-14_22-3-29.png

Now turn it upside down and where “G” goes screw the support blocks “I” to the top. The silicon all the edges inside the box.
upload_2014-10-14_22-4-1.png

Screw “G” into place, screwing into support blocks.
upload_2014-10-14_22-4-33.png

Spray box with glue and cover in sub carpet. then cut hole in the carpet for the Speaker terminal cup and screw it into place.
upload_2014-10-14_22-5-11.png
 
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Cooper

Cooper

Zorg Guru (IV)
Supporter
Australian Zeds
Joined
Apr 17, 2014
Points
157
Location
Hobart Tasmania Australia
Model of Z
3.0i 2001
Can you please post a couple of pix of the real completed box? Thanks.
 
GazHyde

GazHyde

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Administrator
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M Power
Joined
Dec 2, 2011
Points
226
Location
Berkshire
Model of Z
Z4 MR
@Susan - thanks for posting this up. I will add it to the article system as soon as I get chance to do so.

David said:
Hard top, are you able to link to the video?
Click to expand...
I think he meant that he watched the progress of it, rather than there being an actual video of it happening ;) Unless I missed it of course!
 
hard top

hard top

Zorg Expert (I)
Dutch Zeds
The M44 Massive
Joined
Dec 5, 2011
Points
213
Location
Netherlands
David said:
Hard top, are you able to link to the video?
I'd be very interested in watching it!
Thanks
Click to expand...
Hi David, Gaz is right, it was a progress thread with photos.
@Susan might post them up, If we ask her nicely......;)

Oh, and by the way, this is a teaser, one I nicked.....Shhhh

 
Susan

Susan

Dedicated Member
Joined
Nov 20, 2013
Points
29
Location
Central Coast
Model of Z
Z3
When completed I wasn't happy with the pulled look to the top, so I removed it and recovered the top giving it a more tailored look. This is the first sub box I have ever built. I made it out of cardboard first to get the pattern, then when I was happy with that I then cut the MDF. I found a lot of the how to build sub boxes videos on youtube to be very helpful on sealing it and covering it etc. to be honest I was surprised no one has made a how to build a sub box for the Z3, I looked high and low for a pattern for one... I then figured if I'm looking, no doubt someone else will be to, so I thought I'd put one together....I feel sure that you will improve on my pattern but at least you have a starting point..... enjoy :)
 
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