I just installed a new Fosgate P3 15 in my wife's car with an Orion HP2800 amp. At what frequencies do I set the LP and the HP. I believe each setting is 50-500. The enclosure is vented and is to be tuned @ 32hz. The dual VC is ran in series and is bridged to the amp.I also have an Alpine HU where I can adjust the Bass frequency as well as the HPF settings for those. Also, on the HU, I'm trying to figure out how to change the Q or SPL(it's stuck at 1) Any help would be appreciated. Thanks.