Those of you who own a Yamaha Receiver or are familiar with them could maybe answer this question. Having come from a hifi enironment in to HT i'm now getting to grips with a myriad of different things such as "reference level", the need to calibrate my speakers at 75Db, sub settings etc. I understand the concept of 00Db as reference and calibrating a system for 75Db however my question is this. In my old hifi world I went by the mantra that you shouldn't really run your amplifier over half way, and in fact never needed to as it was perfectly loud enought below this. I now have moved to HT and live in a world of DB's and reference levels. The question is, although I understand that the DB reading on my AMP is relative my amp *ALSO* has a bar graph on the front of it, which does give some resemblance to a normal volume dial with a min and max. So, where on this bar graph does the 00Db lie ? At the max, in the middle or somewhere else ? And if this bar graph means anything, does the same old adage apply that I shouldn't run the amp past half way on it, regardless of the Db ? Thanks for you help, Mark.