Greetings, A few months back, I picked up a used GK700rb mk1 head, that came with a SWR Workingman's 2x10" cab. One rather huge issue I've been experiencing with the amp, is that it keeps kicking engaging safety mode circuits at the most inopportune times. Obviously this sucks for gigging, but I absolutely love the sound of the thing. At first, I looked and looked for others who had the same issues with the head, and figured out the SWR cab it came with was rated way too low in both wattage and resistance to be used alone (I would have needed another 8ohm cab for it to be happy), I really don't know what the previous owner was thinking... I ended up getting an Eden 2x15" cab, rated at 450w @ 4Ohms, which is the exact rating I needed for a single cab. Once I plugged in the Eden cab, things seemed to work right for a while, Recently, the amp has been engaging the safety mode circuits randomly again. I've tried separating the head from the cab (in case it is a loose capacitor getting vibrations from the cab or my drummer or something), I've plugged different cabs into it, used different cables, etc. Currently, it is connected with a 1/4" speaker cable...no luck. My EQ, and most knobs are set flat, between 10-Noon, no Bi-amp functions turned on, No contour/presence, -10db pad on (for an active bass). I have a small pedal chain, but even when running directly in from bass to amp, I still get safety circuits engaging at bad times. Meanwhile, my band members are getting restless and unhappy that there is suddenly no bass mid-song. Can't say I blame them. I guess its good they care. I am wondering if anyone else has experienced this type of thing? I've tried using the search function, but the results seem vague and don't appear to apply to my situation. Is there any course of action BESIDES getting a new head that I cannot presently afford? Thanks in advance.