Wow, those are 18"s, I though they were 15"s from the picture side by side to the M60 …er, wait a minute, that‘s a M80 … never mind

Thanks, for the info MIKEY. I've already done the numbers for a 4-15” drivers rig. It’ll cost me about the same of a HSU VTF3mkII. However, I'm giving more weight to the higher WAF the IB might have, and the excuse to go and buy some power tools.
Great HT room you have there...

The sailor does not pray for wind, he learns to sail. --Lindborg