You've got no cabin gain really in the Home Theater so porting and tuning low is highly recommended for SQ. If you tune below 20hz, you wont experience any nasty group delay or any of the bad effects usually associated with ported enclosures because hearing is not very sensitive down super low.
not trying to jack the tread but if u want a HT and also listen to music, something tuned @20-25hz wont be too low for music, what do you guys usually set the LPF on ur HT sub, 60hz???
Mine's set somewhere around 50Hz, blends nicely with the mains...the Fortes will play confidently down to about 40Hz or so, but the amps need support on the lower octaves //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif