I have an idea to put part of a tax return to good use. I want to put an 18" Dayton Classic (http://www.parts-express.com/dayton-...4-ohm--295-475
) subwoofer in my floor. Lately, I have been implementing options to increase the available space in my small living room, beginning with the in-wall book case and in-ceiling speakers. Freeing up a couple square feet of floor space makes a world of perceptual difference. Thus, I do not want to put a large subwoofer on the floor.
The plan is 16 cubic feet, because this is the largest space I can occupy under the floor in this location without preventing us from accessing the washer and dryer in the basement comfortably. You can see pictures of the basement, where the subwoofer box will be mounted in between floor joists spaced with 20.125" of available width. The light fixture will be moved.
The plan for the driver is 16 ft3, 18Hz tune. I plan to cut a 22" square in the very corner of my living room floor, and install an hvac grill or register. The driver, and the two ports will have to exit this 22" square area.
Winisd Pro tells me, without specifics (they are at work), that this arrangement will allow me decent extension into just below 20Hz at levels that should be enough to shake everything in my house... I am thinking the effect will be nice with the mechanical coupling of the box to the floor joists. What are your thoughts? IIRC, Winisd tells me it can exceed xmax at the 300rms I want to give it, but will it exceed xmech? Dayton does not share this spec.
As a side note, at the same time of the construction of the subwoofer, the tv will be corner wall mounted using this: https://www.amazon.com/gp/product/B0...=ATVPDKIKX0DER
Also, I plan to install DIY corner (triangle) shelving below the television to house a new PC build (HTPC), and the iNuke NU1000DSP (http://www.parts-express.com/behring...-dsp--248-6702
) that will power this sub.
The idea for the NU1000DSP is to use both channels bridged into the 4 ohm load, with an appropriate limiter setting in the DSP. Am I correct in thinking that this is a better way to go than using a single channel?
Regarding driver choice, I am aware there are better choices that will allow me to use a smaller box, and perhaps get more SPL. But, I am limited on budget unfortunately.
Being in a corner, I am aware that room modes (and boundary gain) will be increased, but I have had a small sub in this location in the past with good response. Also, I feel that since the sub will be located within the floor boundary, interference should be reduced. Is this correct?
Surprisingly, the wife has been OK with this plan so far (keeping fingers crossed!)
Thanks guys, I appreciate any thoughts and/or suggestions to improve this plan. As you can probably tell, I am not incredibly experienced in this DIY field, and may have a lot of questions. I have enjoyed mostly lurking on this forum for some time and soaking up everyone's knowledge.
Sorry for the book-long post!
PS. sorry for the mess in the pics! I have a two-year old son and niece in the house who will be "helping" me with these projects.
Tomorrow I will try to post my Winisd Pro sim results, box dimensions, etc. for my initial plan.