[ASCTLC]

Hi all,

I tried doing searches and not getting information as specific as I believe I need/want.  I saw mention of specific output fuse size based on wattage vs speaker impedance (a 5 amp fuse will allow maximum 200W into an 8 ohm speaker).

So if I have large floor standing (5 speaker/4 way) 4 ohm speakers with max rated 300 watt capability.  What fast blow fuse size will allow no more than 300W into a 4 ohm speaker?

Is it 7 amp fuse produces max 196 watts?  (current squared X impedance)

Thanks,
Andy

[avahifi]

Since your speaker's impedance varies a whole lot over its frequency range I suggest you be cautious with your fuse selection.

In general we suggest no more than 6 amp quick blow output fuses for the big AVA power amplifiers.  Large fuses then this often will allow the amplifier to protect the fuses by blowing the speakers first!

Frank

[ASCTLC]

Thank you Frank, I'll stick with the 6A fast blow replacement that was in it already. 

The powerful low freq audio on last night's movie Interstellar was apparently a little much. 

Andy