GSG Audio Design - Here we're test fitting the new Eminence Tour Grade 21 inch subwoofer (NSW6021-6) in two of our new DIY subwoofer cabinet kits. On the top left pic is
Test of the active Edge EDBX12ADSP-E3 subwoofer with built-in DSP and – Edge Car Audio
Stream Subwoofer & Bass TesT (by EmrE BuLSaT) by EmrE_BuLSaT2 | Listen online for free on SoundCloud
List of references and awards of test reports in international magazines