Hi all, looking for advice since I now have some time to focus on getting this amp working right. A quick refresher, I purchased it used but well assembled, nothing looks obviously wrong internally, resistor values are reasonable, no fizz or noise and all switches & pots are functional. Only mod is adding a VRM which works a treat.
Problem is that there is little bottom and it is quite strident - we aren't talking subtle here - bass on max and treble min makes it bearable but still lacks beef. Feels like there is nothing below about 200hz and loads up top. Same problem using the 6V6 or El84 set as well as normal or TMB channels. Tube swaps have no effect. Voltages are within reason. Cabinet choice doesn't do it either, in fact I am using Scumback H55's currently that shift foundations with any other head on top. With the Tone Tubbies nobody can bear to be on the same planet.
I am a bit baffled, is there something that can cause this? I hear great potential in this amp, I must be overlooking something obvious....
Cheers,
Colin