Hey i have 2 stereo speakers connected to a preamp which is then connected to my amplifier. the speakers are rated at 8ohms and my amp has a space for 16, 8, 4 ,2. currently i have my speaker wire running from the +/- of my right speaker to the +/- right side of my amp in the 8 ohms plugs. and the +/- of my left speaker hooked up to the +/- of the left side of my amp in the 8 ohms.i am wondering if this is correct or is there any better way i can do it?