No worries man i got you i was having the same problem here is a link where you can get them in the mean time. no basshead should be without this music
http://carstereoclassifieds.org/forum/showthread.php?t=304
and 30hz is great man like i said the lower the better in my opinion, but i am addicted to lows. my next box is gonna be tuned to 25hz. but something about the Q's just sound so clear and stable at the 25-35hz range with my 31hz tuning. i have herd a lot of subs in my young life and for the life of me i don't think i could stray from there sound quality and love for lows that the Q's have.