With the same cab, what's the volume diff. of these?

[MikeNiteRail]

My math is off today. If I have a 18w amp powering the same cab as a 50w amp, what's the volume difference going to be?

I know that a 5w amp would sound half as loud...

[John Phillips]

4.4dB, in theory.

( 10*Log(18/50) )

Pretty big, in a mix - though it won't sound as much as that in isolation. There also may be a significant difference in voicing, which may make the volume difference seem less, or more, than that depending on what the rest of the mix is like.

[MikeNiteRail]

That's exactly the kind of thing I was looking for. Thanks!