When it comes to getting loud bass in your
car, where you position the subwoofers in
the trunk makes a difference.
Not only where you put the box, but also which
way you face the speakers themselves.
So we decided today, to run a few tests and
see if we could figure out for us which way
works best.
So for the test, we're using a 12 inch subwoofer
in a ported box, because ported boxes are
louder, and we're feeding it, what, about
600 watts?
Give or take, yeah.
..from your amp.
We're just gonna play a 40 hertz bass tone
through the subwoofer and measure it with
an SPO meter.
We'll be taking the measurement from up here,
in front of the car and every time we move
the box around we'll replay the tone and get
another measurement and see which position
works the best.
First test.
I'm looking at the SPO meter and we're getting
80, 80 db.
Sideways firing.
Nice, 84.
Third test: 84 again.
Now let's just slide it straight back.
We got 86 db that time.
You know, I gotta say, I'm not surprised we
had that much of a jump because, from in here,
the qualitative difference in the bass was
really noticeable.
Yeah?
Yeah, it was deeper, it was richer, it was
fuller.
I'm not surprised at all that we got a full
5 db jump.
It's kind of counter intuitive.
You would think that facing the sub away from
you would cause the bass waves to flow out
behind the car, but apparently not.
It's using the full trunk as a bass chamber.
We got the best results from pointing the
subwoofers away from the backseat, firing
toward the rear of the car, what a 6 db increase,
5 or 6 db increase, over firing them straight
into the car.
So if you have any questions about where to
put your subwoofers in the trunk or what kind
of box you need, give us a call.
