DIY Speaker Project PAD

Hello! I have large subwoofers (about 8cu ft)  going under work: Mr. Stig Tangen´s allmighty subwoofers, based on JBL 2226H. My plan is to position 2-way DIY speakers on the top of these large stereo subwoofers. I assume that sealed design would integrate & work best with large vented subs. I ca...