I need help. I have some DIY skills but not speaker building but my budget of around $500 for a complete project has me looking to give building a sub a shot. I am looking for a HT sub (with a little music thrown in) that has high wife acceptance factor. I would love this thing to hit low and fill a 23' x 26' x 8' room. Is this possible on a tight budget? If so, could someone help a poor guy out with pretty specific recommendations (speaker, amp, design). I know I ask a lot but there seems to be a plethora of very knowledgeable folks on these threads. Thanks!