what i have is an onkyo component system. phono, tuner cassette, eq, p-3150v pre amp, m-5130 amp. i bought the yamaha for multi channel listening. i connected my denon multi channel dvd player optical in to the yamaha. followed the instructions; 4 speakers, no subwoofer. it sounds good but i want more bass. so i tryed to connect the eq which you know does'nt work. so should i connect the dvd player, phono, eq, to the onkyo pre amp then connect pre amp to the yamaha at the rca cd input? i'd have 2 volume controls, 1 on the pre amp and 1 on the yamaha. would i turn the pre amp volume control all the way down and use the volume control only on the yamaha?