Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
Well, 15" wide and 40" tall is a ratio of 2.667-to-1, not 1.618-to-1 or even close. Not that this is necessarily bad but at 40", you'll definitely want to analyze internal standing waves. There will be pipe modes in the passband, if this is a full range speaker. Depending on what you're trying to do, that may or may not be a good thing. For instance, transmission lines depend on them. But it is something you'll need to explore for best performance.