Would someone please point me to, or begin, a discussion about "shelving"? I tried a search but all I saw in the first several threads were mentions in other contexts. I'm not sure I understand the application. I want to safeguard my speakers and get an acceptable tone to myself and the audience at a useable volume level in most circumstances. TIA to all. Edit: I did look in the FAQs and found a description. How do you use this in real-world applications?