How to Set Up a Home Theater System : Choosing a Sub Woofer for a Home Theater
Hello, I’m Reggie Hayes here with Expert Village,
and we’re talking about the subwoofer. What is a subwoofer? The subwoofer is just an oversized
speaker. Again this one is like a 12-inch speaker right here. It, it is your base. It
is your explosions. It’s your booms. It’s your rattles. It’s everything. It shakes the
couches. It shakes the walls, and it shakes the neighbors sometimes. But, they’re very
cool to have. Now this one is a much more powerful speaker than the one that we have
for our little 12-foot room here, but it is designed for much larger rooms. Now the purpose
of the subwoofer is to protect the main speakers. Your main speakers, especially the smaller
main speakers you have, they really cannot handle these really low tones, and that’s
why you have these. Now, what’s so intimidating about ’em sometimes is this right here- the
hookups. Now, this one right here has a lot of features. It has more features on it than
are really necessary for a subwoofer. And what I mean is that it can separate your speakers
right here. It takes speakers out, excuse me, it takes input from your speakers and
can output your main speakers. You really won’t need that. The main thing you really
need to worry about is your main inputs right here. Those come from your receiver. Now,
right here is your volume. Pretty much all your subwoofers are gonna have a volume, and
you can play with that and find out how loud of the bass tones you want. Phase. Now phase
is something really interesting. As we said earlier in the main audio, speakers push air.
But it’s very important that when speakers push air at the same time and at the same
rate. Your speakers are pushing in like that. Now if all of your speakers are pointed the
same way from the front of your entertainment center, they’re going to be in sync, or what
they call in the phase. They push and pull at the same time. The subwoofer usually sets
across from the other side of the room somewhere, like in our case, near the couch. However,
usually you’ll turn it around which means that it’s working against your other speakers.
When you do that this one is nice enough to have the phase feature. You just flip the
switch to 180, if you spin it around like we had it earlier. It’s really technical.
It’s probably way more technical than I need to go into with you guys, but you guys should,
it?s just there for you guys to know in case you want to explore. The best thing to do
is to play with it and see what sounds best for you. The crossover frequency is the last
part of the subwoofer. It’s very important. It is the point at which, it sends, it stops
sending low tones to your main speakers and starts retaining them in the subwoofer itself.
The larger the speaker, the larger the main speaker, the more base they’ll be able to
handle. However the smaller the main speaker, the less base they’ll be able to handle, and
that’s where the subwoofer really kicks in. If you have a large speaker, it’ll be able
to handle the 120Hz number. If you have a really small speaker you’re gonna need to
cut this down closer to 40. The best thing to do is to play with it and see what works
best for you and see what sounds best.