Mojo,

What threw me off was that "SPL" is not doubled by going from say 112dB to 115dB, but the "energy" is doubled. I was trying to read more into jakeman's (John's) post and when he used "doubling SPL", I didn't think he meant this. I think he meant doubling the energy, which is clearly the case among these 3 subs (or nearly anyway, since the difference is 2dB between the EP500 and 600).

John

John
Our HT