Jamo SUB300BA SUB 300 Powered Subwoofer Subwoofer "onkyo receiver blowing fuses" Questions

...makes a sound as well.but seems not working.is it related to the fuse????i know the fuse box.but i dont know how to remove the fuse to check.pls help me out.my receiver is onkyo tx-sr 608 thank you ...

...ONkYO TX-SR 805. I cannot get any sound fron B & W ASW100. I removed the cable from the receiver and touched the middle terminal. I did the same test with a B & W 601 Sub not currently in use. same ...