Ran my etho 15s for a while but wanted to build a 4th order.The 15s were amazing. It had been a while since iver heard what id consider sound quality from a sub. I ran them ported first but the box was tuned way to high. So i blocked off my port cutouts and ran sealed. I was blown away and knew i needed to build a 4th. No way i could fit them without sacrificing airspace i decided to build to 12s.
Previous build pic, etho 15s ported
Cut them down and built my 12s
Had alot of time in the box build since it was built in the trunk piece by piece, double and triple layered in most places with 2x4 backing
Direct Sound Solutions-Taramps-DC Power-Team Loud Trunks
Refs:too many to list