I need a test disc to set my system with. I am having to use a dmm as i cant afford a dd-1. I know a dmm is notbas accyrate but beats nothing. My question is If i use the disc from a dd-1 does anyone know the list for the tracks? I can get the replacement discs inexpensively. Also if i use a 40hz 0db tone to set sub amp.will it effect my results? Positive or negative effect?. Thanks