I have updated my spreadsheet with the new driver data with information from the Eminence PDF data sheets. The big news is all the Neo technology. They have revamped the Deltalite line and replaced it with Deltalite-II. The other big news is the two Kappalite Neo drivers in 15". Significant improvement, especially in the 12" and 15" drivers. The HL-10A bass horn driver is being superceded by the HL-10C model. The new driver is 4 ohms, and Tuba friendly, as it will run approximately 8 ohms impedance after horn loading. Tuba builders wanting to run big stacks of Tuba24 will probably want the older HL-10A driver, due to its higher impedance. They run approximately 12 ohms after horn loading, allowing more to be run in parallel before hitting the amp's 2-ohm lower limit. The HL-10A is being phased out of the line.