Impedance or turns ratio? It does make a difference.
If it's impedance ratio, then yes, 8:96 would be right. (BTW: 1:12 impedance ratio would correspond to about 1:3.5 turns ratio.)
OTOH- if it's TURNS ratio, the 1:12 turns ratio would be SQUARED for impedance... 1:12 turns corresponds to 1:144 impedance. That would make it an 8:1152 transformer.
Also BTW: Turns ratio corresponds to the voltage step-up. A 1:12 impedance ratio- turns ratio of 1:3.5- would step up the voltage 3.5 times the original. OTOH, 1:12 turns ratio would step up the voltage 1:12. Either could, plausibly, be used with the HPM units- they need a high voltage, but almost no current, due to their piezoelectric nature.
Just wanted to make sure everything was clear here...
Regards,
Gordon.