5 Core 12" full range

Google translation maybe? Yes, they are easy to dismiss. I have been watching U-tube video's of Indian workers rebuilding and manufacturing complex machinery and electronics, and what they are capable of, for what they have, is amazing. Hey, You never know if you don't ask right?
 
Based on these: "ideally suited for a wide range of portable speech and music sound reinforcement applications."

"Ideal for musical keyboard and PA Application"

40-45 Hz Fs, ~45-50 L Vas, ~0.9-1.0 Qts, so some form of OB/open back to stuffed TL.