I'm currently designing a single 12" box for practise at home, mainly because decent practise amps here are stupid expensive. I found a nice 12" woofer for $50 brand new and I have all the woodworking skills and tools I need. But I ran the specs through WinISD and I was wondering if it looks good for a bass cabinet. I've heard flat response is good and thats what I've got. The box is tuned to 33.7Hz and has a volume of 312L or 110cmx68cmx41cm and is ported. I know its a bit big but it wont get moved or anything its just gunna sit at home for practise use, i'll be powering it with an old hifi amp. Thanks for the advice.