Originally Posted by kaigoss69
I would like to add that the underseats have a ~5dB peak at around 300 - 350Hz. So, since the pink noise is full range, the meter will pick-up the level from that frequency range. To get rid of it, it is best to engage the amp's lowpass filter, at about 20-30 Hz above the the MS-8 crossover frequency. So, if you have the underseats/fronts crossed at 200Hz, set the filter to 220 - 230Hz. This way, the level will be set correctly and the MS-8 autotune can function correctly. If you don't have the option of lowpassing the signal, set the gains about 5dB louder than the other speakers.
I'll try this as well and see what happens.
Turbo Dynamics Hybrid Turbos, Wagner Intercooler, DPF Delete Pipe with Sports Cat, Ecotune custom map ~ 422bhp & 618ft.lbs
Ohlins R&T with custom Swift rears