Custom Blues Harp
~ 10 watts vintage style amplifier, tweed & lacquered finished, single channel - two hi/lo inputs, 2 band EQ, spring reverb and master volume, powered single KT66 / 6L6 tube.
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~10 watts single ended amplifier, single channel - two inputs hi/low impedance, 2 band EQ, spring reverb and volume control. Pine wood finger joint cabinet, covered with original tweed, shelac lacquered, two color finish: dark brown and blond. 10 inch speaker.
June 2022
Amplifier specification
Amplifier specification
Cabinet:
Pine wood, covered with original tweed, shellac lacquered, sides dark brown lacquered
Speaker opening 3 horizontal grill
Size: 38.5 cm height, 35 cm width, 21 cm depth
Weight: ~12 kg
Input and output:
2x 1/4" input, INPUT 1 ,2
1x 1/4" output speaker - 8 Ohm (speaker not included)
1x10" speaker, (Speaker baffle - 18mm thick baffle /alt. Plywood 10mm thick)
Power output ~10 watts
Controls:
Gain, with gain boost switch - push-pull pot.
High
Low
Reverb control
Master volume
Power indicator lamp
Power switch - on/off
Tubes:
Pre-amp section: 3x12AX7 JJ
Power amp section: 1x KT66 (exchangable with 6L6 JJ)
Circuit characteristics:
Point-to-point wired circuit, turret board, no PCB
Tube heaters power supply referenced to ground - no hum noise
No negative feedback
Cathode bias
Solid-state rectifier (diodes)
Fuse protection, 1.6 A
Power transformer: https://amptone.pl/1898-transformator-sieciowy-pt18l80-18w-lezacy
Output transformer: https://amptone.pl/2542-glosnikowy-ot15s-se-single-ended-15w-el34
Reverb tank: TAD 8EB2C1B/8F...
Power supply ~230-240V,50Hz, ~100W
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