Question Can I use a SpeakON to 1/4" jack / TRS cable to connect my TC amp to a non TC-Cab that has no speakON plug The manuals mention a risk of short-circuit. What are the precautions

When you connect the jack to the speaker, a short-circuit can occur if you are playing and connecting at the same time. So the only rule you need to know, is: Connect the jack to the speaker BEFORE you turn the power.