I noticed that the AutoTech SEOS12 is 70mm deep whereas the plastic DIY Sound Group is 88.9mm deep. Were there changes to the original design after AutoTech started production and before the DIY Sound Group SEOS12 went into production?
The Autotech SEOS-12 is 90mm deep according to this: http://www.diysoundgroup.com/catalog/product/gallery/id/218/image/475/