I picked up an Acoustic 104 6x10 cab and 150 head yesterday. I'm trying to check all the speakers- seems like one in there is a little messed up and I was to visually inspect them, check with a multimeter, see if I can repair etc. Problem is, I've never owned a speaker cabinet in my life and I don't know how to take the darn thing apart. There's six screws on the baffle, but when I take those off it's not like the whole thing slides nicely out. I don't want to mangle all the cloth, yank the wire to the input jack, etc. Any suggestions? While I'm at it, the problem with the speaker is only on certain notes high up the neck (it's either F or F# on the guitar I'm testing with at the moment.) Sounds like it's distorted, or being played with a kazoo through a DS-1, or something along those lines. Is that cone cry? Something else?