OK so here are close mic measurements of the SI18's. Don't worry about the upper range as the marantz is crossing it at 80hz and I didn't feel like doing it all over again after I had all the measurements. This post is to focus on what types of L/T's are accomplished with the DCX
Here is the graphing for the close mic measurements using various EQing steps starting with the green native response.
The red line is with a 15dB boost at 20hz LP (attempt at an L/T) and no other EQ
The blue line is adding a 6dB cut at 30hz q 2.0 to bring the rest of the curve down after the LT boost
The gold is with an added -3dB narrow band boost to fix the little dip at 42hz
Each of the above stack on to the other.
Here is the close mic response in red of the full EQing done from the first graph compared to the MLP response with zero EQing turned on. A good way to show room gain's effectiveness!
This graph now shows the close mic EQ'd response vs the first graph's eq measurements turned on:
So the flat response as close mic certainly shows a rising response at the seats, which is a direct result of the L/T. I don't know if THAT much of a rise is warranted, but it is certainly a pretty serious house curve