This is my take on the Randall RG-100ES amp minus the original poweramp and reverb section - not to make it as complicated as hell for some beginners. For simplicity, poweramp is a TDA7293 based from Rod Elliot's application. Reverb section based from BELTON reverb brick.
Few notes:
1. In the reverb buffer section(starting from the 82n capacitor), I just directly input values from the Rebote 2.5 delay as this was originaly my plan to put a delay instead of a reverb. Feel free to experiment on the values of each resistors and capacitors or better yet use the values recommended according to the datasheet of Belton Reverb Brick.
2. Transformer is of course, as seen on the attached file, 25-0-25 / 3A to 4A.
3. 50K trimmers(0.5W) are used instead of fix 33K resistor(can be also used either) to adjust the correct Drain voltages of each FET according to the schematic or for your own tuning.
4. I didn't provide pads for the channel switching( just refer to schematic, it's very simple).
Comments, suggestions, and (violent) reactions are welcome.
Enjoy!.
Few notes:
1. In the reverb buffer section(starting from the 82n capacitor), I just directly input values from the Rebote 2.5 delay as this was originaly my plan to put a delay instead of a reverb. Feel free to experiment on the values of each resistors and capacitors or better yet use the values recommended according to the datasheet of Belton Reverb Brick.
2. Transformer is of course, as seen on the attached file, 25-0-25 / 3A to 4A.
3. 50K trimmers(0.5W) are used instead of fix 33K resistor(can be also used either) to adjust the correct Drain voltages of each FET according to the schematic or for your own tuning.
4. I didn't provide pads for the channel switching( just refer to schematic, it's very simple).
Comments, suggestions, and (violent) reactions are welcome.
Enjoy!.