02-22-2011, 08:10 PM
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Join Date: Jan 2011
Good questions.. I have considered it actually, but to add a relay would require a whole new case and heatsink. There's not much room in the KL300p.. The resistor gets hot to the touch, but nothing outside it's spec or even close to it. You would have to hold your finger on it for 15-20 seconds or more for it to burn you. My IR thermometer died not long ago or I'd be able to tell you exactly how hot it gets, but in testing I've left the amp powered up for days without any trouble whatsoever.
EDIT: I got to thinking, and there are some very small relays around.. it might be feasible to add one for the bias circuit, but given that the circuit can run indefinitely without issue I don't know if I will or not.
Last edited by eagle1911; 02-22-2011 at 08:28 PM.