Hi, I'm Andrew Welker, Axiom design engineer.
And today we're going to talk a little bit about connecting your subwoofer.
Connecting a subwoofer is not very difficult, particularly as most home
theater receivers have got dedicated subwoofer outputs on them.
The first thing that I want to mention is, before you make any connections to your
system, it's a good idea to make sure that the power is off to the receiver and
to the subwoofer. You're not necessarily going to damage anything, but it can cause
some startling bangs and noises if things are not right. So if you locate on the
back of your home theater receiver or processor the output labeled sub out,
most of the time you're going to find a common connection called
an RCA connection and here's what an RCA jack looks like, and here's the plug end.
On most receivers, there is going to be one sub output, on some there'll be two,
but you're simply going to plug your RCA cable into that sub out on your receiver
or processor, and then the other end is going to connect to your subwoofer.
Now, depending on what vintage of our subwoofer that you own,
you may have a multi plug which requires a quarter phone to RCA adapter, which is
included with the subwoofer. If you have one of those amplifiers, you
simply plug the adapter in and then you plug the other end of your RCA cable
from your receiver's sub out into that input connection, and now, the subwoofer
is connected. If you don't have one of these multi jacks on your subwoofer,
you'll have just the standard RCA jack, and it's just a matter of plugging into
the RCA that's labeled low level input. On some home theater processors, you're
going to find a different connection as an option, which is called an XLR connection
which looks like this. It's typically found on higher end
equipment and it gives you the benefit of being able to run longer
runs of these cables with lower noise and interference. In the case that you've got
an XLR subwoofer output on your processor, it's exactly the same as the
RCA connection. If you have a multi jack, it plugs into the same connector that held
the RCA adapter, and if you have a version with a dedicated XLR input, it simply
plugs into that input there.
In case you're not using a home theater receiver processor
and have a stereo system or two channel system
with an integrated amplifier or a dedicated preamp and amplifier,
obviously, you're not going to find this dedicated subwoofer output in almost all
cases with those electronics. So the question then is, how can you hook
up your subwoofers? In the case where you've got an amplifier that you need
to hook up to the subwoofer, you're going to use what's called the high
level connections, and these are identical to the speaker connections that you would
use on a typical amplifier. Now, you have a couple of options here.
You can either run your amplifier connections to the main speakers and then
run another set of speaker cables to the subwoofer.
Alternatively, you can either wire from the amplifier to the subwoofer and then
jump off to your main speakers, or vice versa. You can go to the speakers from the
amplifier and then from the main left and right speakers, you can jumper
to the subwoofer. In any case, what you're going to be doing is you're
simply going to connect both the left and right speaker outputs wherever they're
coming from to the input of the subwoofer amp. And now, you have available the same
signal that you would coming from a sub out on a processor. Now that you've got
your subwoofer connected up in the manner that works with the electronics that
you own, now is the time that you can power up your electronics,
plug in the subwoofer, power it on, and then go towards making
the adjustments and set up.
Thank you.