so I've been using my UM18-22s in Johnnysubs for a little over a year now ( or has it even been a full year? Don't know...).
From the get go I coupled them with an inuke 6000 DSP.
The best way to use them I found was to put one subwoofer in the front right corner, the other one in the back left corner. I turn up the gain knobs on the inuke all the way to 100% and lower the gain to -12dB on the inuke's Xover settings, as well as -12dB in my Marantz SR7012's Audyssey setup.
What happens now is, that I'm having great and insane bass and I'm seriously happy with it - the only problem is the clipping and I don't know where it's coming from.
Watching Kong: Skull Island as example - The Inuke's clipping lights light up within the first 3 minutes of the movie more than once, even when watching the movie on -20 Volume. The strange part is, that the lights below the clipping lights DON'T light up. Sometimes it's just one light, sometimes two, sometimes even none - yet the red light lights up during some scenes.
What could the issue be? I didn't set a limiter. I'm using a HPF at 18 Hz following LTD02's guide. Except the -12 dB gain in the inuke's settings and the -12 dB on the AVR I didn't change anything in comparison to his settings.
I hope someone's able to help.