Fuse size


I have a pair of ESS heil amt 1 with JBL power series speakers they look a little ruff, SOUNDS great! BUT I blow the 2amp fuse some times what size should I have in them? What power do they accept/need 
pappyvon
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Last time they blew both went at the same time, seems odd, normally I have that pioneer in my game room pushing  2 fisher and 2 kenwood speakers with no problems, loud enough to not be able to talk and still clear