Another "DIY Subwoofer selection help" thread
I'm hoping to get some of the generous experts in here to lend a guy some advice. In the interest of being thorough, some background:
So first, the room: My home theater setup is in a common living room that measures 15' x 17' x 8'. The bad is that it has a 5' x 7'7" opening along one wall that opens into a 10' x 10' x 8' foyer / stairway combo. The ugly is that along the perpendicular wall to the first, there is a 6' x 7'7" opening that leads to a 12' x 10' x 8' "dining" room.
Second, my existing subs: 1 Dayton UM-1522 in a ~3.25 ft^3 net enclosure with 3lbs of acousta-stuff powered by a bridged Crown XLS-1002. The sub is EQ'd via my Anthem MRX-720's ARC software, has a 2nd order HPF @ 19Hz, and a 6th order LPF @ 110Hz. A 20Hz tone at -25 on the 720 will actively vibrate just about every wall in the house to at least some degree. To help smooth room response, I have a second BIC America F-12 that I'm looking to replace. Both music and movies are improved by the addition of the second sub, which is easily A/B'd on the same music at the same volume, with and without the second sub.
Sooo....I'm looking to build a replacement for the F12 and am looking for suggestions on drivers. I would prefer to build a ported enclosure, as I do not have the space requirements for horns. I also have the WAF to consider. My wife thoroughly enjoys the setup, and is very lenient and understanding in this area, but she's not going to tolerate another massive enclosure. She's also not going to be amenable to more than 2 subs in our current living room, so I can't expand to 3 or 4 sub enclosures.
My current contender is the Dayton Audio RSS390HO. For $179 shipped, it's a 15" driver, 800w RMS power handling, 21.5Hz Fs that can be put into a 2.72 (net) ft^3 enclosure, tuned to 23Hz with a 2" x 10" x 34" slot port. With port displacement, gasket displacement and bracing, that gives me a total ft^3 requirement of about 3.4 ft^3.
So, I'm interested in other drivers that might work better in a similarly sized enclosure and maybe have a better response / output curve. As modeled in WinISD (provided I did everything right), it looks like output is about 103dB SPL @ 20Hz with 800 watts. I had to add an HPF of 23Hz to prevent exceeding xmax, and port velocity is at just about 17m/s with a first port resonance of 199Hz.
I beseech the audio gods of AVS to grant me wisdom in this endeavor.
Last edited by protectedvoid; 07-26-2017 at 05:40 PM.
Reason: (edited to add port displacement)