Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4641086.
sound bar design I did up to make use out of an old pair of pc speakers that no longer worked
I added a picture of the set of speakers i used but you could substitute your own speakers and amplifier board from amazon. there is even plenty of room for a battery inside
I did not include a back for the cabinet but you can do what i did and use a piece of acrylic or very easily design your own back!
speaker dimensions
tweeters(midrange) - 50mm diameter
Woofer - 100mm diameter
external DIM: W-300mm X H-120mm X D-100mm
broken down into 2 parts and re-connected using 3d pen. also has a tong and grove to re-connect 2 parts but if you printer is not 100% accurate you'll probably just want to cut that off and glue together