Hello Stoneyarder --
Can you explain what the issues were with the two middle octaves? I realize that some owners - including myself - feel the middle area of the keyboard have a somewhat harsh/unrealistic sound and was wondering if your issue went beyond that.
Yes. When I played the notes openly holding them down until full decay, starting with middle C, the note would start out flat, then go sharp. then flat again. I went through the entire menu trying to adjust for it with no success, drove me nuts. Then I did a few factory resets and that still did not help. It was out of tune and had to do with the internal electronics. I heard it when I first played but it seemed to get worse over the next few weeks. At which point the wife was able to finally hear it. The speakers on the 515 are junk, which made it all the worse when trying to listen intently. They cannot handle the full range of dynamics an 88 keyed keyboard can deliver. I have noticed that at the factory settings on the new one the tones are "bright" so turning down the brightness and also setting the EQ to "user" it seems neccesary to adjust the mids to where you like them, it helps. The best way to desribe the speakers on it are like taking a full blown CFX and putting it into a tiny closet and expecting symphony hall sounds. Not going to happen... The reverb seems to make things worse. Try a factory reset then, CFX, turn reverb off, then hit EQ> USER> and adjust the lows, mid and hi. Hope that helps. If not, let me know what you hear that you dont like... Stone