1.Power Supply Voltage: defaults double AC 18V/3A, power more than 60W (the maximum voltage should be no more than double AC 19V, and it should be no less than 18V; or the digital tube will be off, and the voice will get distorted; if you want to use AC 12V, you need to modify lamp filament buck resistance 2.2 ohm; then the amplifier output power will be relatively low).
2.Headphone amplifier/pre-output: amplification times is 0.8
Im1875t amplifier output power: typical 20W (max 30W)
3.Loudspeaker impedance: 4-8 ohm
4.Total harmonic distortion: <0.04%
5.Signal noise ratio: 105dB
6.Frequency response: 14Hz-100KHz
|1||Metal Film Resistor||R1,R3,R10,R13,R17,R18,R20,R21||4.7K||8|
|2||Metal Film Resistor||R2,R4,R30,R31||1K||4|
|3||Metal Film Resistor||R5-R8||47ohm||4|
|4||Metal Film Resistor||R22,R23||56K||2|
|5||Metal Film Resistor||R11,R14||470K||2|
|6||Metal Film Resistor||R12,R15||200ohm||2|
|7||Metal Film Resistor||R9||3W 47ohm||1|
|8||Metal Film Resistor||R16,R19||100K||2|
|9||Metal Film Resistor||R24,R26,R27,R32||22K||4|
|10||Metal Film Resistor||R25,R28||10ohm||2|
|11||Electrolytic Capacitor||C13,C14||47uf 10V||2|
|12||Electrolytic Capacitor||C1-C4||2200uf 25V||4|
|13||Electrolytic Capacitor||C5-C8||470uf 35V||4|
|14||Film Capacitor||C15,C16||0.1uf 50V||2|
|15||Film Capacitor||C9-C12||1uf 50V||4|
|31||6J1 Electronic Tube||2|
|33||T0-220 Insulation film||2|
Finished Product Picture:
Please Download the Diagram here:
I. Tested by ICStation's Outstanding Partner arduinoLab:
Learn More Details in Below Video:
(The language in the video is Russian)
II. Tested by ICStation's Outstanding Partner 12voltvids:
Learn More Details in the Video:
(The language in the video is English)
III. Tested by ICStation's Outstanding Partner Mundo Electrónica:
Learn More Details in the Video:
(The language in the video is Spanish)
Nice amplifier for my STAX Electrostatic headphone SX34. Amplifier has enough power to drive the transformator for de elctrotatic Headphone. Sounds super.
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