(Edit: photo added, potential 15" locations)
Happy Holidays and thanks in advance for the help. Been lurking here for the last 8 months, searching and reading; now I think I am ready to ask some questions. Recently bought a house and I am looking to build our home theater/hifi music setup in the main living room. It is an open-concept large room with moderately vaulted ceilings:
Room size: approx. 25ft x 23 ft
Room Volume: approx. 5973.5 cubic ft
I would like to build DIY subwoofers for this space. (Very much in the planning phase right now, don’t plan to start for quite awhile due to other house stuff needing to get done first). I have built several enclosures for car audio subwoofers before and am decently handy.
Here are my requirements for the subwoofers:
Here are my current ideas and questions:
- Current budget for amp and subs: $650
(In a few years I am not opposed to upgrading drivers, or adding more of the same type, but I would prefer not to replace or buy a new amp).
- Will be used 70/30 for Music/Movies
- Must be accurate, tight, musical, not sloppy
- Ideally would like to extend quite low, and experience the “room breathing” everyone talks about
- Will be built into furniture, for this reason I would like to keep enclosure size around 4 cubic feet max per driver (will build a stealthy credenza table to house 1 or 2 drivers, will build others into a bench or similar. If I need to go over budget a little due to enclosure materials that's okay).
- Will likely build ported (not sealed) for efficiency’s sake
(Drivers I’ve been looking at: Dayton Reference Series, Dayton Ultimaxes 12” and 15”, super cheap Daytons/Peerless like Dayton Classics)
This seems like a big room. For this reason I figured two 15s would do well in this space. If two 12s would fulfill all my requirements, that would be great. However 15s are more efficient and move more air for just a bit more money. But, will they be less accurate/tight for things like detailed basslines?
I have been searching and reading for weeks to confirm if the myth of bigger driver = sloppier is true. It leads to a lot of internet subwoofer arguments with no clear-cut answer. If anyone can confirm or deny this please do! What I have sorta gathered is that given the same enclosure type, big drivers can sound great, but they need to be a higher end/expensive driver to achieve this.
Can I achieve all my requirements with two 15s? Two 12s? …FOUR 12s?!
If 12s in this price point will just sound tighter/cleaner/punchier, I am not opposed to doing something like four 12s around the room. However four 12s of the same quality will cost more than two 15s, at this point I’d have to go with cheaper drivers. I can find very few reviews of HT/hifi enthusiasts using the Dayton Classics or other cheap Parts Express drivers (other than the PA640/VBSS, which seems like it would move too little air and require too large of an enclosure?)
Will four 12s sound inherently better than two 15s? Would the cheap PE subwoofer drivers meet my req’s?
As far as amps go, I know very little when it comes to HT. I was leaning towards the Crown XLI 1500, as it seems to be the cheapest, trusted one with decent power output, and fan noise needs to be minimal because it will live near the TV/listening area. If there is another option available for not too much more that is stable to 2 ohms, that would be preferable to give more wiring options.
Crown XLI 1500, or any other suggestions for amps?
….Do I need to spend more money?
Sorry for the long post, and thank you very much for any input/help!