Hi Jesse,
I spoke with our HF engineer about this. He says that the old curve was vendor supplied from when we used to purchase the driver. Weve more or less proven their information was bogus. They also gave the driver an 85W power rating, but it wouldnt handle more than 15W when we tested. Even if their response curve was legit, we dont know how they measured it. When we cloned our own tooling, we eliminated the use of an adaptor to use it with a screw-on horn (the thread pattern used to be female, we made it a male thread). We matched the original signature response, improved the sensitivity and power rating, and published accurate information. We also validated the design with blind listening tests among our staff and the new driver was chosen as the favorite. We feel the new driver is superior.
Best Regards,
Anthony Lucas
Technical Support
Eminence Speaker, LLC