So. If I unplug my internal speakers and and plug them into the extension speaker jack.... does that cause like fire or damage? Honestly, I did it ONLY momentarily. The reason was to see it that would help the white noise. It did, but with volume loss. So I put it back like the people who designed would want. ALL THAT just to ask.... I have a 4 ohm Fender Rumble cab. How would or could you hook the Twin into it, without fire or personal injury? Only to test noise level. Thanks.