Ooold Guy: I shortened the depth 1 3/4" to compensate for removing the back angles. I drew the side plan out full scale and noticed the last bend before the bin was way off from normal horn design. That means to me that the original plan is off, also. I'm sure JBL knew what they were doing, but? The fix is very simple. You may not wish to change, just wanted to let you know before you started. It'll be a while until you start. I may not check here as no-one else is doing project. Email me if you would like me to explain the changes. [email protected]. Zene