How to Scratch-Build a Vintage Amp, Part 8: Completed and Tested

In this final episode of an 8-part series, the Supro Model 6422 Tremo-Verb modified clone is completed and tested. Included are the covering of the cabinet, installation of grill cloth, fabrication of a decorative fretwork grill, completion of the circuit wiring, and final assembly of the amplifier. A chart is created showing how three different rectifier tubes (5Y3, 5U4, GZ34) affect the node voltages and tube bias for both a 6V6 and a 5881 (6L6GB) output tube. A final cost analysis is discussed. Finally, a sound demo of both output tubes is presented......both clean and with varying amounts of tremolo and/or reverb.

Links:
1.) Cabinet Covering Video Part 1:    • How to Cover a Cabinet with Tolex or ...  
2.) Cabinet Covering Video Part 2:    • How to Cover a Cabinet with Tolex or ...  
3.) Installing Grill Cloth:    • How to Cover A Speaker Baffle with Gr...  
4.) How to Make Custom Amp Logos and ID Plates:    • How to Make Custom Amp Logos and Labels  
5.) Updated Schematic and Construction Plans: https://app.box.com/s/u945p1s2dv7ffro... Corrected on 7 Nov 15
6.) Chart of 3 Rectifiers with 6V6: https://app.box.com/s/l7f7q7gwhjllve4...
7.) Chart of 3 Rectifiers with 5881 (6L6GB): https://app.box.com/s/hlmc1tjf76vg4t3...
8.) Layout Diagram for this Amp: Included in Schematic Link

Special thanks to viewer, Tommy Foley, who generously and expertly prepared the superb schematics, construction diagrams, and layout diagram.


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