What's up guys. I just installed my equipment about a week ago. It has never sounded right since day one. I have a 12" RL-p being sent 600 watts RMS from an Orion 600D. HU is an Alpine 9856. It sounds pretty solid up to about volume 20(out of 35). Then past there, it just sounds like total shit. It makes like a virbrating noise every time it hits. It is hard to explain. Like the noise is comming from inside the box or something. I have my gain set at 24.5 volts like it should be etc. I have no idea why it sounds like that. Thanks for any help.
