Sup everyone, had a few questions. So I just got the new Sundown SAX 100.4D. Its got some EQ buttons that I question because I dont know them. Under the High Pass Filter there is a button is either 12db or if pressed 24db. Also beside that one is a x1 or x10? The last is a knob that ranges from 50Hz -500Hz. Can anyone tell me the advantage of any of them? I played with those settings a little last night when I installed the amp.. I just need someone to give me a good starting point and a better understanding on how to set them. Examples would be greatly appreciated. Again I'm not a complete noob but I do need better understanding on many things. I have my amp set to the full setting for my highs. And my gains are halfway for now untill i can tune it better. My build list my speakers that are being run off of it. The rea speakers are wired together going into amp. Thanks, i hope i didnt leave anything out. http://sundownaudio.com/index.php/products/amplifiers/sax-1004d.html