I was wondering if it is possible to do a DIY in-wall sub but instead of the normal volume there is a 36Lx36Lx18H hole behind the wall that I would like to use. I was thinking about building a sealed box with those dimensions I can slide into the wall with the subs and power it with an inuke 1000. Anyone think this would be ok?
Yep. The enclosure ALWAYS matters. The question is "how much". You will find some people that will swear you kicked a puppy if your enclosure doesn't meet some set of rules. You will find some people that will tweak an tweak their crossovers (DSP) to account for the enclosure in an open air environment. Then you find people who measure and measure and pretty much go "yep, it is better..but it really just doesn't matter since the room jacks up everything anyways and I should EQ for that".
I must be guilty because people say I am guilty because they chose to call me guilty because they refuse to see the truth. Much easier to be part of the mob..