I have an MTX sub about 4 yrs old I want to know proper set up. it has a hi output and a regular input area with a cross over dial with range of 40Hz to 150Hz and a front volume control. I have hooked up both ways but I am always messing with the bass for proper bass control any help would be appreciated. ps I do have hi end speakers but am running a cheap receiver. which may be why I always have to adjust bass.