WOW! Thank you all very much! You've given me alot to think about. My understanding is much more clear now. Unfortunately my hopes of designing my own horn system (top to bottom end) are all but squashed. Buying a DIY kit seems much more reasonable from a financial/emotional standpoint(eliminates the failure headache and associated relentless tweaking). In two months I'll have a good job (graduation pending), then I'll look even more deeply into it. Thanks again!