Dexter3d

Could someone explain if these fuses on speaker terminals are really necessary? I've heard that fuse resistance changes with a bit with heat, that might not be optimal?

Hi All, could someone knowledgeable let me know the pinout for kp250 jack speaker terminals? Are these mono or stereo (balanced) terminals? is the tip positive? also, one of the speakers is missing both fuses with holders. Original fuse is 32v 20amp, but these are rare and kind of expensive for a fuse. Would higher voltage alternatives work? In general, are these fuses necessary? Almost had an idea to use a piece of patch wire cheers, dex