Mod 101 Manual page 30

3. Negative Feedback Mod
This mod is very simple.
bandwidth, while decreasing gain. Lowering the resistor value increases the amount of negative feedback.
Remove the 20K resistor from T3 and replace it with an 820.
Resistors
820Ω 1/2W
T3
4. Bypass Cap Mod
This Mod is very simple. Changing this capacitor should make the highs a little smoother.
Remove the 25µF cap from T2 and replace it with a 220µF cap.
Caps
220µF 50V
5. Power Tube Mod
Change the power tubes to 6L6GC's or EL34's and re-bias the amp following section 14.
Generally, the 6L6GC's will give you more bass in a clean setting, while the EL34's will
enter overdrive distortion sooner.
More negative feedback increases clean headroom and frequency response
1
20K
1
T2
30
820
T3
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T2
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