Sounds like something is wrong with the speakers. Contact Gallo support.
I bought a used pair of CL4s here and something behind one of the tweeters was loose. I emailed them asking for the proper screw-head to remove the tweeter. They had me ship the speaker to them at my expense. They removed the tweeter, fixed the loose item, and shipped it back to me AT THEIR EXPENSE..
I bought a used pair of CL4s here and something behind one of the tweeters was loose. I emailed them asking for the proper screw-head to remove the tweeter. They had me ship the speaker to them at my expense. They removed the tweeter, fixed the loose item, and shipped it back to me AT THEIR EXPENSE..