guitar speaker / was Re: Tube challenge!

Haible Juergen Juergen.Haible at
Thu Nov 25 13:26:07 CET 1999

	>You should be carefull with this.
	>Lots of tube amp end stages can get broken if not loaded with the
	>(complex-)impedance. the outputtransformer needs to be connected to
	>inductor or large voltage spikes can appear at the output. 
	>I've got a book with circuit diagrams (it's in dutch...) but i
never tried

While it's well known that an *open* output can cause some damage on a tube
power amplifier, I nver heard of a constant load resistor instead of a
would cause any problems. Is this really true ? And if so, why ?


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