Originally Posted by chalugadp
When I set mine I left my inuke at full and had to turn the gain on my hsu from 9'oclock to about 10:30 to even them out. I wouldn't want to turn inuke down that far but someone else will chime in.
Thanks Chaluga. From what I have read, the combined spl of multiple subs should be 75 db before running EQ. When I had just the two PSAs, I simple used my spl meter and adjusted the gain on each sub until they measured 72 db. Combined, they were right at 75 db. So, I thought it made sense that if I minus another 3 db for the third sub (Marty), then each sub should be 69 db. Only problem is; the inuke has to be at max so no way to adjust to 69.
Aside from that, I applied a LPF as LTD suggested (at 100 hz) and it did tame the high frequency response to a point. Instead of operating in the 2khz zone, it was now down to around 200hz cutoff, which should have eliminated all traces of higher frequencies. However, when playing back the anthem test tones, I could still hear some higher frequencies leaking through. I then ran the same tests on one of the PSAs and the same higher frequency leak was NOT present at all--which is strange since the PSA graphs show a steep cutoff at 500hz.. So then I started to play around with the slopes in the inuke and when I tried a butterworth 48db, that seemed to eliminate all traces of said higher frequencies.
When I look at how the marty measures using anthem, things just don't look normal. There is a peak at 45 hz followed by a steep drop-off on both sides. This just cannot be right since a single PSA, in the same position, did not have such a cut off and actually extended lower all the way to below 20 hz. This is so odd, since I could hear/feel the sheer power and weight of the marty a lot more than the two PSAs combined. I would like to find a way to smooth out that line by raising the output on both sides of the 45 hz peak. Not sure if I am explaining things correctly but I am familiar enough with ARC that I am certain those measurements must be improved before proceeding with ARC.
For comparison, the PSA does not drop off as much as the marty below 45hz---which should actually be the opposite.