I read through the fax but I havent really found anything on setting up speaker frequency. Forgive me if I missed it. I have a Sony StR-DE725 Dolby Digital receiver. I am running some midrange Klipsch bookshelf speakers and a Klipsch cnter channel through it. The receiver gives me a frequenccy option of 500hz-5khz for the front mids and 100hz-1khz for front bass. On the Klipsch website most of their bookshelfs have a frequency response of 52Hz-20kHz±3dB. If I have a 12" Klipsch sub, what should I set my front hz to? I only use my system for watching DVD's. Thanks.