Help first DIY need advise!!!

[Delta Dan 777]

This is my first post and project I have a great set of Magnat speakers an 8", 4" and tweeter the sounded amazing in my 81 BMW M3 sadly I had to leave to leave the car in Germany when I left the military. I figured I could easily hold a box for them and I was soooo wrong the more research I do the more confused I get so to start for the box 16 x 12 x 10 ported ( guessing volume as I don't have spec sheet) figured size using the golden ratio I have no clue for the 4" driver I am planing on using 1.5" MDF any help would be greatly appreciated!

[mikejennens]

You'd need to either supply the T/S parameters or a driver model number. With that info, the parameters can be input to something like WinISD and a box size can be found. Do you have a crossover for it?
Mike

[Delta Dan 777]

Don't have t/s but I will include pictures of the drivers and it came with crossover the model number is ( It's the number on the back ) I have also made a cardboard box sealed and currently working on a vented Box just to see if I am close the sealed box sounded great for the 8 haven't messed with the 4 yet can I really gauge the sound of a cardboard box I made the air tight or as close as I could using masking tape and filled with pollyfill It's roughly 10x10x8 or so all the info on the back as written
Magnat
M 12 -woofer-
Art,-Nr. 400 984
MAGNAT AUDIO PRODUKTE GmbH • Lise-Meitner-ate. D-50259 Pulheim