Just wondering if it would be a good idea to add some sort of a dummy load to the output terminals of a tube amp to prevent damage in case speaker is disconnected for some reason? Also, how big of an load would you need, would a 100-200 ohm resistor be fine for 8 ohm output?
No, you need a load which is a bit nearer to the correct value. A series CR might help (like a Zobel network). Best to simply ensure that you don't run without a load.
Yes, plan A is definitively going to be running it with speakers attached at all times. However, accidents can happen, such as a cable coming loose or something. I'd like to a have plan B other than buying a new output transformer.
Is wiring the output as triode safer for the OPT compared to pentode? I would imagine it is if i draw a horizontal loadline (no load condition) on both curves but i maybe missing something. If so, with the expense of some power loss, i think the best foolproof way would be this, no?
Yes, that's certainly better than nothing. Guitar amps commonly use such a resistor nowadays (up to 470 ohm, 5 watt), and it is seems to be enough to damp the secondary and save the OT from dire flashover.how big of an load would you need, would a 100-200 ohm resistor be fine for 8 ohm output?
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