I'm wanting to build a sub for my HT. I've heard people swear by the Shiva. But what Adire sub is the best for me. I've got a large open family room with vaulted ceilings. Thanks for the help.
I have my ht in a large, vaulted room that opens onto another large, vaulted room. I have sealed, downfiring, "mid-Q" Tempest with an AVA 250 amp, which I'm very happy with.
I definitely agree about the (Infinite Baffle) IB sub option if you'd consider it. Though, with vaulted ceilings, you'd have to have a basement area or a big closet that you could use for this application (I'm assuming that you wouldn't have an attic.)
FWIW, I've got a vented Tempest (290L sonotube, tuned to 17.5Hz) in a 3000 cu. ft. living/dining room open to a 1000 cu. ft. adjacent room. Also open to hallway and pretty much the rest of the house. It does very well in this space. If you go vented with a Shiva or Tempest, you're going to have a large enclosure unless you go with Passive Radiators (PR). I don't see any reason to go with a Shiva over a Tempest unless you're concerned with enclosure size.
If you can afford it, a Tumult with PR's and 1Kw of power will suit you well, too.
A few answers to a few simple questions will get you much better responses. What are you room dimensions (or cu. footage)? What's your budget? Are you more concerned with decent SPL's in general, or are you wanting to plunge the depths (below 20Hz) of modern movie soundtracks?