Surge protector

@immatthewj pay no attention to the pics, they all come w/ attached cord. Your seeing a listing for extra 3ft cords for sources.

Okay, thanks @audioguy85  , that clears that up and saves me from buying that 3' cord!

@immatthewj What does switching off the breakers do. Don't you want them on so they offer protection by tripping?

If you switch them off, don't you lose their protection and allow current to flow through without impediment? 

@vinylshadow  , I just re-read the entire thread to make sure that I was going to order the correct product and in the course of that re-reading I went through this post by you again, and when I said I turn the breaker off I meant that I manually trip it and this does the opposite of "allow current to flow through without impediment" as it actually completely impedes current from flowing through the circuit under normal circumstances.

However, Jea informs me that a massive voltage spike/surge could jump across a tripped breaker and this does not offer the level of protection that I thought it did.  I think, however, it may have been sufficient to protect against the type of surge that the OP of this thread experienced.  I hope I cleared up what I meant on that.

Hi, 

as I read the responses here and your original post, it seems clear you should have a protected outlet at each speaker  

An inexpensive product with an equipment warranty would be the Pro series fromAPC  one for each speaker total of around $60 or less  

if your house wiring is correct, and you have a surge, the units *clamp* the voltage, fail the unit in off mode. replace with another or send unit in toAPC for replacement  

message me if you need more detail, or would even like a call to clarify. 
hope your repair goes smoothly!

And let us not forget solar flares!