Just registered with need for assistance in the dimensions of a DIY subwoofer. I have 2 x Elemental Design 13KV Dual 4 ohm subs (12 inch) with an ED 550 4 ohm plate amp. This will go into a small bedroom that has a Denon receiver (85x7) to power ED 6 inch MTM on stands. This will be used for 70% XM and 30 % HT.
ED built box will be 450 plus shipping, out of my budget. I can put together simpe square/rectangular design.
1. I am looking for a dual sub slot ported design with amp in the back.
2. Looking for response to 25 Hz, fast response for music, but does not overkill the front stage.
3. Design specific as I have no experience with the online design program nor the parameters.
a. Down firing with side firing port same side as amp, port above amp, rectangular in shape, for corner loading.
b. Down firing with down firing port with amp on side for corner loading, rectangular in shape.
c. Forward facing, one on top of another, with port at the bottom, rectangular in shape (vertically for space considerations) with amp in back on lower part (may interfere with L shape port.
Any help would be appreciated. I am a little fuzzy on port length and how to determine. Box will be built out of 5/8 MDF and spray painted with a textured paint of some kind due to costs.