[Vintage-Audio] Re Impedence and RMS Power

[Philip Atchley]

Use the 70 Volt output on the amplifier and a matching transformer for each
speaker set if it has a 70 Volt output.  That's the correct way.

OR, go with a really "BIG BIG" professional amplifier like the ones we had
at my last church.  Rack mounted, fan cooled units that put out about 800
Watts each and could easily drive impedance's of less than 1 Ohm! We ran
three of them, one for house sound and two for the two separate monitor
feeds.  They kept adding monitors on and I was afraid they'd blow.  One
finally did, it'd shut down under load.   I took it home to check it out,
but couldn't reproduce the failure in my house.   If I recall correctly, I
think it had 12 output transistors mounted to the back panel.  I told them
to send it to the factory in Washington.

Where I go now we have one little hundred Watt board and the people complain
if it gets turned up very far <grin>.

73 from the "Beaconeers Lair".
Phil, KO6BB


> Agreed.
>
> What is the best, or most safe way, to operate such a system without
damage to
> the amplifier?