Neophyte Question

[Bruce]

Assuming identical components, what will produce more "noise?"

150 X 1 into 12" sub
75 X 2 into 2 - 12" subs

Is there a forumula for this, so you could even plug in 10" subs and
compare?

[Mark Zarella]

> Assuming identical components, what will produce more "noise?"
>
> 150 X 1 into 12" sub
> 75 X 2 into 2 - 12" subs

Neither.

>
> Is there a forumula for this, so you could even plug in 10" subs and
> compare?

Huh?

[Jason]

300x4 into 4 18" subs :D


"Bruce" > wrote in message
...
> Assuming identical components, what will produce more "noise?"
>
> 150 X 1 into 12" sub
> 75 X 2 into 2 - 12" subs
>
> Is there a forumula for this, so you could even plug in 10" subs and
> compare?

[Scott Johnson]

"Bruce" > wrote in message
...
> Assuming identical components, what will produce more "noise?"
>
> 150 X 1 into 12" sub
> 75 X 2 into 2 - 12" subs
>
> Is there a forumula for this, so you could even plug in 10" subs and
> compare?

Theoreticaly, the 2 12's with 75 watts each would produce a little more SPL.
Although, amps are so cheap these days that you can run a single 12 in a
large ported box with 300 or 600 watts.

[David]

I disagree.

I see it like this:

(using 90dB sensitivity for the subs)

One 12 would produce ~106dB at 75w.

So, double the power to 150w and gain 3dB or double the amount of speakers
and gain 3dB.

One 12 would produce ~109dB at 150w and two 12's would produce ~109dB at
75w.

Right?!

David
UnderTheDash.com

, and ~108dB at 150w, so using two subs (assuming they're the same) will add
3dB and produce ~108dB at 75w...



"Scott Johnson" > wrote in
message ...
>
> "Bruce" > wrote in message
> ...
> > Assuming identical components, what will produce more "noise?"
> >
> > 150 X 1 into 12" sub
> > 75 X 2 into 2 - 12" subs
> >
> > Is there a forumula for this, so you could even plug in 10" subs and
> > compare?
>
> Theoreticaly, the 2 12's with 75 watts each would produce a little more
SPL.
> Although, amps are so cheap these days that you can run a single 12 in a
> large ported box with 300 or 600 watts.
>
>
>

[Mark Zarella]

> , and ~108dB at 150w, so using two subs (assuming they're the same) will
add
> 3dB and produce ~108dB at 75w...

He may be referring to power compression, which is decreased by going with a
pair of subs rather than a single one (all else being equal).