Hey all, i have been murking around on this site for about 2 months, just trying to read and catch up on everything. What a resource, I feel blessed to have the knowledge, of some of the MEs here, and the more expeirnced Engineers. I have been in the music business for quite some time. I am 30, and have a music arts degree. I got into recording years ago, and over time, have built up gear, made the complete digital switch, and have a decent project studio in my home, with a decent iso booth, and some good gear. My question is this. I have been really getting into eq of late, and really trying to understand it and dig into it. I understand, that, it is such an art. I have finally been able to purchase, some decent eqs, and i was wondering if a: would it be better to run my stereo mixes out of my card(1820 emu m) and through my dbx 32 channel eq or would is using an interal plug better? i have been using the urs eq bundle, and it has some nice sounding eqs. also, here is my main question. How do i determine, what frequencies my problems, lie in? like, lets say i have some bottom end rumbling, and i want to cut that frequency down or out, how do i dertermine, exactly what frequency that is? is there a tool to analyize that,? anyway, any help would be great.