[Ralph Barone[_3_]]

Richard Kuschel wrote:
I have seen xlr for speakers. Vox used 3 pin xlr for speakers with pins 1
and 2 wired.Ampeg used a 4 pin xlr on the SVT and other amplifiers.
Speaker signal was pins 1&4 pins 2&3 were shorted in the cabinet jack and
the B+ was routed through the cable to the speaker jack. This prevented
the amp from destroying the output transformer from burning up without
speaker termination. When the plug was inserted into the speaker jack,
the B+ was fed back to the amp.


I can see what they were trying to do, but I cant imagine a more dangerous
way to achieve that than sending B+ through a speaker cable.