I replaced the stock 10' sub woofer with a JL Audio 10W3v3-4 and added an amp with about 250W RMS. I recommend it to everyone. Check it out: Here's the stock 10' Bose upside down after I removed it. In order to remove it, I took out the rear seats and rear deck. There's a thread here somewhere on how to do that. Just remember to unbolt the rear shade from inside the trunk before pulling out the rear deck. Anyway, look how small the magnet is.

It was very thin and light too. The stock sub sits here in the trunk. If you get in your trunk and look up here, you'll see the little sub and magnet. I've removed the rear deck and sub in the pic below. From inside the car, you see the oval Bose grill.

Here's a comparison of the stock vs. The replacement JL 10W3, hahaha. Look at the difference in the magnets. And the weight difference was huge, haha. So, let the cutting begin! Measure twice, cut once! Below is the template I made off of the dimensions given by JL.

The MZ2340B Mercedes Benz C-Class Double DIN or DIN w/pocket Install Dash Kit includes an optional ISO pocket and painted to match factory dash.

I used the cardboard to draw a circle in the car to cut. No turning back! This stuff cut like butter, by the way. It's important to use the correct tools. The cutter I'm using is a 90 degree cutter designed to cut this way. You could use a dremel, but you'll get fine iron powder spread everywhere that is impossible to clean out entirely and turns orange when wet. I turned my black BMW interior orange doing this, haha.

So I bought some black interior spray paint to fix it. Please wear eye protection as getting metal shavings out of one's eye is likely costly, time consuming and painfull. So there it is!

There's room for two 10's, if you move the first aid kit. But you really don't need to do that, unless you want to have a stupid amounts of bass. I'll be back to finish up later.

So I'm running 'free air', or 'infinite baffle', just like stock. But since were pushing some real bass now, I wanted to seal everything up. Home depot is my friend. Bought some sheet metal there and some glue.

Notice the broken glass, by the way. I bought the car used. Must have been in a nice wreck or something. That explains why the car was mint. Haha Everything was replaced.

I cut little shapes to fill the holes. Then glued it up. Seemed to work for me. Now for my little secret.

PROTECTO WRAP!!! (/superherovoice) It's butel based (similar to Dynomat Extreem) not asphault base. Buku persamaan ic dan transistor switching. And it's cheap at Home Depot. Here we are after deadening and cutting a ring out of 1' thick mdf with a jig saw. I secured the ring to the deck with the same glue, or construction adhesive, and four screws. If I had to do it over, I would make the mdf wider (across the deck), but not deeper, due to the stuff in teh way.