Hello everyone, this is my first post on this forum and my first subwoofer build though I am a proficient carpenter. Here is what I would like to do... please be brutally honest if this won't work.
I have 2x Powerglass fiberglass enclosures that normally cover electrical equipment at power substations. They were used as equipment shelters for water monitoring stations and then donated to our local Habitat for Humanity where I bought them... so if this doesn't work at least I made a donation to a worthy cause. I want to build a subwoofer enclosure to fit inside each of these enclosures. Conservative internal dimensions are 38"x38" at the base and 34"x34" at the top with a height of 50" (max height 54"). The enclosures have large lift off door on each side and are vented. There is a 4" lip on each side under the door that may be an issue. Build cost excluding amp (under $750 best, $1000 max).
1) First and introductory question, am I going to find a marine subwoofer 2x12" or 15" that I can use in a Tuba, Titan, or other suitable design that fits in the fiberglass enclosures and will fill a backyard with base (remember I am building 2 so 4x12" or 2x15") I don't think they make a 18" marine and from what I read on here you don't use 18" in horns unless they are way bigger than my dimensions.
2) What enclosure design is best for outdoor music/theater. Yes, I want something that can play everything. I like the idea of using horns so that I don't need a massive amp. I plan on pairing these with commercially available water resistant outdoor speakers still to be purchased.
3) Is anyone interested in helping me select a woofer for the final design. I know this takes some optimization and knowledge which I don't currently have. I don't have a problem using an off the shelf design if I can find a marine subwoofer that doesn't rob most of the enclosure's performance. Even using an existing design selecting the correct woofer will be something that I will need guidance/help.
4) tell me what I forgot.
Thanks In Advance!
I included photos below.