I have been reading some threads about how to use trace arithmetic to get a measurement on what kind of measurement I will get in my living room once the second sub is done. Set in my case the RS SPL meter in LP moved the current sub till I found the 2 best locations ( had avr eq disabled x-over set at 200hz only thing on was HPF on amp ) Used Trace Arithmetic to combine both measurements. This is with no smoothing nothing.
View attachment 600545
View attachment 600545
