1. please assist technical resolve SE tube amp drooped voltage condition.
2. vc508 older model, alterated as follows:
3. replaced ht rectifier to 3 ampere fast diodes type
4. added htdc snubber .1uf
5. added htdc electrolytic 1000uf x 450wvdc
6. added power switch snubber .005uf x 2kv ceramic disc
7. added line snubber .05uf x 250vac
8. added ac cooling fan stabilize PT thermal conditions
9. added shunt diode protection EL84 plate to cathode (same type as 3 above, 1kv x 3 ampere)
10. replaced OT using EDCOR 5k:8 x 15VA
11.
12. schematic specifies 272vdc htdc but now measures 260vdc, a droop of 12vdc blamed on the EDCOR SE OT
13. this affects downline voltages for preamp section
14. yet tubes removed and energized deenergized, charged capacitors remain at 313vdc for week duration unattended, thus indicating no parasytic losses in circuitry.
15. is EDCOR voltage droop 12vdc SIGNIFICANT? amp plays rather sassy esp after 30 minutes, and plays even better when demanded continuously by guitar's signal. however, initial tone signature is dark voiced, later clearing into sassy wetness, on edge.
16. should i consult EDCOR on the droop 12vdc?
17. thanks in advance
2. vc508 older model, alterated as follows:
3. replaced ht rectifier to 3 ampere fast diodes type
4. added htdc snubber .1uf
5. added htdc electrolytic 1000uf x 450wvdc
6. added power switch snubber .005uf x 2kv ceramic disc
7. added line snubber .05uf x 250vac
8. added ac cooling fan stabilize PT thermal conditions
9. added shunt diode protection EL84 plate to cathode (same type as 3 above, 1kv x 3 ampere)
10. replaced OT using EDCOR 5k:8 x 15VA
11.
12. schematic specifies 272vdc htdc but now measures 260vdc, a droop of 12vdc blamed on the EDCOR SE OT
13. this affects downline voltages for preamp section
14. yet tubes removed and energized deenergized, charged capacitors remain at 313vdc for week duration unattended, thus indicating no parasytic losses in circuitry.
15. is EDCOR voltage droop 12vdc SIGNIFICANT? amp plays rather sassy esp after 30 minutes, and plays even better when demanded continuously by guitar's signal. however, initial tone signature is dark voiced, later clearing into sassy wetness, on edge.
16. should i consult EDCOR on the droop 12vdc?
17. thanks in advance