Who needs 15's when a Waveradio will reproduce a symphony orchestra in your livingroom??? You how many people believe that?? Lot's and the WAF can be the deciding factor if you don't have your "own" space. Most DIY guys are using vintage JBL drivers. There are lots of them and they are still supported by JBL. They offer excellent value. The newer drivers can be down right expensive. The old addage you get what you pay for is still very true. My friends think I am nuts but they all leave amazed at what a JBL system can sound like. My lattest DIY's are 4344 clones a 20 year old design. You know what they blow that damned radio's socks off.