Hi Borin!
-> BG> size, etc., etc., than the generic speaker you plan to use. A
-> 12" is BG> small potatoes for a home theatre subwoofer. When you
-> purchase the
-> Hi, do you mean 12" subs is not enough for a home theatre
In "traditional" pro audio, 15" speakers were pretty much the norm for
low frequencies, or perhaps a pair of 12"s, so for large sound systems
18" are usual.. Jensen also made a 30" woofer that was intended for subs
in electronic organ setups.
I usually think of subs as trying to do justice to the ~80 and under
range of sounds, and somehow I just don't usually think of 12"s as being
used for that purpose.. Though cabinets play a great deal in coupling
very low frequencies. The speaker is just an "air pump".
Having bass that goes down to nearly DC is an amazing thing. Small
cabinets don't cut it for low bass that is tight and controlled..
anyone can bass that is loud and sloppy. Oh, and when powering them,
subs use a lot of amp power to do right, and that isn't necessarily for
volume sake, it's to keep that transducer tightly under control at all
times. Finally, subs take drivers that move A LOT of air, that's why the
larger the better usually is the way to go, or perhaps a number of
smaller transducers that make up the same surface area as a large
transducer.
Someone here mentioned a way of "hetrodyning" ultrasonic transducers to
put out a tightly controlled and yet full range of sound without large
cabinets.. perhaps one day we will all be using that technology. Until
that time, we are usually stuck with some kind of compromise in
cabinetry just to get the decent sound.
Bonnie *:>
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