I thought this might help some other people save a few bucks and mount their IB (infinite baffle) subs nicely.
Make sure to wear Safety Glasses so none of this wood gets in your eyes.
Jig saw or rotorzip/router
MDF or Plywood 3/4" Thick (This is mainly just built to hold the sub in place, not like a box so "I" think either wood is fine).
Weather stripping or some type of Neoprene Closed Cell foam with adhesive on one side. You want 0.25"-0.5" Thickness(this prevents vibration between Mounting ring and Rear deck).
Screws (to screw sub into mount ring)
Bolts ( to bolt Mount ring to rear deck of car) Four M6 1.00 Pitch bolts. Lenght depnds on thickness of wood used.
MDF: Free, i got scraps
Bolts/Screws: Under $3
Measuring: took a while, but i gave you the measurements below so you're lucky!
Project (not counting measuring) took under 2 hours. Now that i know what to do it would take under 1 hour easy.
Thickness of MDF:
This depends on how far your sub will extend out. I was told that my sub will only go 0.70" out so 3/4"-1" will be decent. If you want to be SAFE make it a little thicker.
**An easy way to add an extra 1/4" is by glueing a 1/4" sheet of plywood on top of the MDF***
MDF was kind of a pain to find for me. Here are some cheap ways to get your hands on it.
1. Home Depot and other lumber yards often get shipments in throughout the week of Plywood and other lumber. Most companies use MDF sheets when packing wood to protect it. So you can ask for the MDF scraps that came with a shipment.
2. Go to a local stereo shop and ask to by some MDF ( you dont need much 1.5'X1.5' sheet)
3. If you have to buy a full sheet (normally sells in 4'x8' then buy a 0.5" thick sheet and glue it together to make a 1" thick piece)
***You will first need to remove the Rear deck and Stock Sub. This Article can help http://bananags.grantham-internation...DIY/rear_deck/
For my sub, ED 11oV.2, I did the following:
Step 1: Measure the Sub
Outside diameter of the sub is needed so you can have the proper size Board cut. My sub measure 10.25" in diameter.
Measure the Surround Diameter. This is the arched rubberish material or foam that connects the Cone on the sub. You want to be a little over the diameter on this rather than under. This will prevent the Surround from hitting the wood when moving back and forth. Mine measure 9.25"
Step 2: Measure the available space for the Mounting Ring
here you need to measure the available space you have for a mounting ring on the rear deck in the trunk. As you can see this area isnt perfectly flat. This is where the Weather stripping comes in.
Make Templates of Paper, then Test fit the paper. Then Trace onto Cardboard. Test fit again. Then trace onto MDF for cutting.
you can always make it a little bigger. That way you can sand it down later rather than waste the wood.
Step 3: Cutting the outside of the mount ring
here you will take the measurements from step 2 and draw out the needed cuts.
Then take the Jig saw and make the needed cuts.
Just cut on the outside of the lines you drew from the templates. I forgot to take a pic before...Sorry :P See pic below for results of cut.
Step 4: Cutting the Sub Hole
First, you want to draw the circle with a diameter of your subs "Outside Surround Diameter". In my case it is 9.25"
To get a nice circle there is 2 easy methods.
1. Screw a nail in the center of the wood. Tie a string to it. Measure out HALF the diameter needed (in my case 4.625") and then tie a Pencil to the end. This will let you make a circle around the screw in the middle 9.25" in diameter.
2. Get a thin piece of plywood, the width can be small. Put a Screw at the bottom middle of the board and screw it into the MDF. Then measure from that screw te 4.625". then drill a small hole JUST THROUGH THE PLYWOOD. Then stick a pencil in the hole and rotate the wood to make a nice circle. (This is what i did).
Now take your Jig saw and cut out the circle. you can also use a RotoZip/Router.
Draw the Circle:
This post will be updated shortly with pictures and a little more info.
If you have any additional info/pictures you want to see let me know.
Thanks to Charmz and Robert_J for tips along the way!!!