After taking advice from some of you on using an EQ, I purchased a Rane PE 17 eq for my sub to eliminate my 20db spike between 20 and 35hz. The manual calls for a TRS cable. Is that the same as an RCA cable? All I have to do is run my recievers sub output to the input of the EQ, then take the output of the EQ to the sub, right? I did a search and didn't find anything. Thanks, Michael.