This post will probably give you a headache from reading it through, but I assure you my question, in the end, is actually pretty simple.
All I want to do is make a ported box so that I can gain more low end extension, and a bit more output from my subs. I just want to figure out a way to do it without losing any SQ, or with losing as little SQ as possible.
Just for the record, and even though it's in my sig, I have 2 12" dual4Ohm ED K's (2003 Models, "e" on the cone), which i'm powering with a Cadence Z7000.
I'm going to build the box myself, because I feel adventurous, and i'd like to have the experience for the future. Seeing this, what kind of relatively cheap, readily-available (home depot-type available) materials would you guys reccommend? I was thinking 1" MDF or 3/4" HDF, but would it really be beneficial to get some of that 7 or 11 ply birchwood? And would it be okay to glue the pieces together one at a time, and then screw them together to let the glue dry, as opposed to clamping the pieces? I just want this box to be solid and durable. I also plan on putting silicone on the inside, so air leaks shouldn't be a problem, but any tips are welcome. Also, what types of glue and silicon would you guys recommend?
Secondly, I can't get WinISD to work on my computer for some reason, so can anybody lead me to a formula for calculating port frequency based on enclosure size? Also, TS parameters for the ED subs would be a godsend, and I would PM the owner of ED, but I can't remember his SN.
Lastly, what kind of enclosure size, and port tuning freq. would you all recommend? I'm looking for a relatively flat response with a bit of a boosted low end. I have an adjustable subsonic filter on my amp, so tuning the box low isn't a problem, but I really have no idea how much it affects the output (or if it even does at all) of the subs in the enclosure by tuning it low. I figure that going from 1 cube per sub to 2-2.5 cubes per sub ported is going to make the output higher no matter what the tuning frequency, but any input is appreciated. Yet again, for the record, I was thinking of tuning it to 28 or 29Hz.
I thank all of you in advance for reading through this drawn-out, sleep-deprivation inspired post, and appreciate any tips/advice/thoughts/opinions that you can shed to help me out. Peace, Love, and T!ttie Grease