RAF DIY - BMW i3 - Subwoofer 

Bravo! This is the one and only correct way to mount a subwoofer in a BMW i3 (not REX). Correction - you used 21mm MDF. And it looks like you made a box with 19,5 liter volume + 0,97 liters in the volume of the 10" subwoofer cutout ring. Minus the subwoofer displacement and there is about 1,4 l subwoofer displacement and there is a 19,1 liters of sealed box volume left - very decent! Calculations in mm for the box: =(265 * 359) * (181 + (229-181)/2) / 1000000 Calculations in mm for the 10" sub cutout: =PI() * (242/2)^2 *21 / 1000000

Great thought process👍🏾

Awesome job, now I need to make one of these boxes for my i3 as well. Which amp did you end up using that still fits under the seats?

Hi I'm looking for you dimensions list ? (did I miss this) great vid !

I want this! What size subwoofer did you use? Great video :)

Hello, can you made this box for me?