Tubes Jubilee ala mode
Bad speaker cable? I had that happen on an amp and I spent about two full minutes trying to figure it out just to find out that while I had it turned up to a moderate volume (with no sound), I was cooking my expensive GrooveTube set.
In fact, with no output load, you can ruin a set of power tubes within a couple of minutes (perhaps MUCH less). Chances are your tubes are shot. If you get a mid-wash tone and your trebel and low dont work like they normally do, you are in the market for new tubes. I only buy good speaker cables, and have since stopped using the 5.00 cheapies you can get in the clearance bin (mine shorted out).
If you have EL34s, look at the base and see if there is a color difference in the base (it should be one color). Also, GrooveTubes labels turn from pumkin orange to dingy brownish when they are over-cooked (I would imagine other brands would do this if they are silk-screened).
Been there, done that, and have the burned tubes to proove it.... >:-(
Bad speaker cable? I had that happen on an amp and I spent about two full minutes trying to figure it out just to find out that while I had it turned up to a moderate volume (with no sound), I was cooking my expensive GrooveTube set.
In fact, with no output load, you can ruin a set of power tubes within a couple of minutes (perhaps MUCH less). Chances are your tubes are shot. If you get a mid-wash tone and your trebel and low dont work like they normally do, you are in the market for new tubes. I only buy good speaker cables, and have since stopped using the 5.00 cheapies you can get in the clearance bin (mine shorted out).
If you have EL34s, look at the base and see if there is a color difference in the base (it should be one color). Also, GrooveTubes labels turn from pumkin orange to dingy brownish when they are over-cooked (I would imagine other brands would do this if they are silk-screened).
Been there, done that, and have the burned tubes to proove it.... >:-(
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