Tube Amp Archive

Many thanks, great help!

Hi
I have seen somewhere pictures of an original 70s small special, I cannot find them anywhere, can anyone please help, especially guts shots,

[quote="gazza"]it is the 101 non hrm, all component values as per the schematic, yes it could be the speakers and/or the studio he has tried the amp in, I have not been present when he has tried it, as this is my 1st build I posted because I thought it may be a characteristic of the amp, I will offe...

it is the 101 non hrm, all component values as per the schematic, yes it could be the speakers and/or the studio he has tried the amp in, I have not been present when he has tried it, as this is my 1st build I posted because I thought it may be a characteristic of the amp, I will offer to "voice" th...

just built a non hrm, while I am happy with the amp the guy I built it for thinks it is bass heavy, has anyone noted similar results, any thoughts on trimming the bass, all component values are currently stock.

you could try a simple fender 5e3 tweed deluxe style tone control around the od master pot, the insertion loss is very low.

in answer to j-po, yes re-soldering the ends of the pins, a pin had not broken off.

The 1st time I came across this I had intermittent filament (we call them heaters over here) re-soldering the pins of the tube & it was fixed! it tested o.k after several hours test.

re-soldered the actual pins of the tubes, I have "saved" many tubes which I would have thrown away! Try it you have nothing to loose!

I have "saved" several rca bp tubes with varies problems (including no filament) by resoldering the pins on the tubes. of course if the tubes are low emission arcing e.t.c there is nothing that can be done.

I have "saved" several rca bp tubes with varies problems (including no filament) by resoldering the pins on the tubes.

I have been looking at & considering building the 97 ods, (the humble schematic see schematic heaven) which seems a simpler "no frills" design,
how does this stack up to the earlier 60s & 70S models, any thoughts?