silly sub question

get a fearfull 12/6 or add a 12 sub to your current rig, all your low end needs will be fulfilled in a lot smaller package than a pile of home theater subs.
theirs a chart somwear on the fearfull page that tells you exactly how long to make your port shelf to tune the cab to the certan resonant frequency you want

 

Why don't you save that money towards your ultimate goal?

 

OP, may I humbly suggest that you tell us what it is that you are trying to accomplish. Your posts are all over the place with ideas that will not work too well. All of us here want desperately to help you get to where you want to be but you're just giving us bits and pieces of information in your questions.

Home theatre subs are useless for an electric bass as they don't provide the frequency range that a bass needs. They also are designed to provide low effects into an average size room in a house. At a gig they will fail to do what is needed.

I hope you have a great New Year.

 

might be a cool expairiment to try wireing a few subs together in different places around the room, see how you can use the acoustics of the room.
yoll love the fearfuls, i have a 1212/6/1 and a 12/6/1 in the works, they are awsome

 

Might run into some weird response stuff running a bunch of different brands/types of subs together, which is what you'd end up with picking up whatever's cheap off CL.

But hey, it could be cool too.

 

i say go for it just because if you can use home theater speakers for your bass then that justifys me building 2 fearful 12/6/1 cabs for my home stereo speakers

 

There are not enough specifics to answer your question.

 

http://www.parts-express.com/loudspeaker-design-cookbook-7th-edition-book--500-035

http://techtalk.parts-express.com/showthread.php?219617-The-Speaker-Building-Bible

http://www.talkbass.com/threads/amp...rcabs-diy-techtalk-links.166225/#post-6193359

See you in 3-12 months...

 

That BIC sub is nowhere near even 200 watts. Maybe 50 watts.

IMO, you are headed in a great money wasting exercise with no residual value as you are buying essentially disposable "junk".

There are many other better options that will ultimately cost less, especially if you buy used.

If you are expecting 20-30Hz response, you are also barking way up the wrong tree, until you get fairly large, sensitivity is going to be way too low to be practically useful. Why do you think you need response down to 20Hz?

In the pro audio world there is a saying, "buy once, cry once".

 

Yep, and the corollary: "garbage in, garbage out."

 

OP, the basic reason that there is no point in doing "small scale" low frequency reproduction is the very un-linear function of our hearing. Look at this:
http://en.wikipedia.org/wiki/Fletcher–Munson_curves

Even in a low key, small gig, a compact, low cost sub is pointless. You HAVE to get something "large-ish" / "expensive-ish" to get any kind of worthwile result.

 

The title says it all...

 

That's too hard!

The Piggy-Bank always gets raided for cell phone bills and beer.

 

BIC Venturi. Wow. There's a name I haven't heard it 35 years.

 

I know bro, There's always one thing or another. Or beer, delicious beer

 

Think of a pile of hi-fi subs as a play pen full of screaming 3 year olds and you will understand different brands and models of sub don't play well together. You need either all the same kind or one big one.

Further, hi-fi stuff is useless for bass guitar.

Again, what are you doing that requires 20hz coverage?

 

At performance level, I'd expect 20Hz to shred the LF driver in a fEARful, no matter how much you extend or block the port.

OP: Why do you need response at 20-30Hz?