- Solid state rectifier (FRED diodes)
- AA764 power source resistors values
- Standby switch
- One knob traditional tone control
- NFB pot
- Resistive attenuator
- Fat switch
- Master Volume (V 2.0)
- 100nF for the second coupling cap (before the vol pot)
- 6V6 United Electron and 12AX7 Tung-Sol
- PIO capacitors (V 2.0)
* I have tried Carbon Comp Resistor as a plate resistor, but the amp has showed up a little hiss noise. So I m still using metal film resitors all around.
** updated photos HERE (V 2.0)
The V 1.0 guts:
The "head":
The "box":
The "combo":
NEW PHOTOS V 2.0 :
NEW PROJECT AA764:
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ReplyDeleteI prefer solid state because of the cost. The two 100 R resistors are for noise reduction, the catode is for a reference voltage, it is a configuration useded at some amps, whem you don't have the 3,15 + 3,15 transformer with a center tape. Tks for the questions.
ReplyDeleteIf you have the center tape, only conect it to the ground.
ReplyDeleteand forget the two 100R resistor and the cathode.
ReplyDeleteThere are four pots in the schematic, but I only see three of them on pictures. Where is the fourth one (NFB I guess).
ReplyDeleteThere are four now: one knob tone control, gain, master volume and a negative feedback. The post was updated at some time, the new pictures are in http://guitar4geek.blogspot.com/2016/06/the-new-8-inch-speaker-cabinet-tolex.html (NEW PHOTOS V 2.0 :). I'm not a organized person. Sorry and tks!
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