My interest is in OB servo subs in the famous Hemo flat pack H frames. I'm coming from a diy accelerometer servo 12" sealed. As I understand it, there is no easy way to look at the frequency response of an OB speaker because the room is so involved. Possibly close miked would get you an idea, but I haven't seen any frequency response data for the GR OB servo sub. Is that available? I would like to see some data just to help me understand the the chosen tuning.
The closest I have come is to look at Rythmik's site where they show a sealed box servo sub using the GR driver. From that data, I would guess that the feedback is at a mid-level, maybe 6 dB, because the phase at both -3 dB points is pretty conservative. Am I understanding this correctly?
Thanks in advance.