I can not help you on that one -Thanks guys! But no one knows about the Earthquake? I really would like to hear about this sub! Supposed to go really low but no one has heard one.
I have not heard this sub myself but I have only heard extremely positive about Mark's Subs..To the OP there are some pretty good youtube vids on several of the subs mentioned above.I have Dual Seaton submersives and they are incredible. I would include them in your consideration set. Will NOT disappoint! I've never heard the Earthquake so I can't help on that one.
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