thank you for the fast answers... im going to go with a 2amp fuse ... if it blows ill move it up to 2.5 amp... i got a email that just said 3amps... but anyway the fuse is before the crossover ... an thats the original design of the speaker so ill just go with it... guess i could install a fuse on each horn but ill just go with one 2amp on the input ... of the box. but i guess your right it only protects the woofer. thanks for the chart... thank you again..