1 pair HOOD JLH2003 Class A Single-ended power amplifier board 22W+22W 8ohm

    • Features：

      This configuration heat-conducting bridge angle aluminum (not a radiator), convenient for customers to connect large radiators;

      Do not expose the power for more than 10 seconds, otherwise the power tube may be burned out.

      HOOD JLH2003 is an upgraded work after JLH1969. It is powered by JLH1969 single-supply power supply and changed to OCL dual-supply power supply. The maximum output power is 22W (8 ohm load).

      Compared with the single power supply of JLH1969, JLH2003 output frequency response curve is more straight (the frequency response curve is affected by no output coupling capacitance)

      The circuit has a magnification of 13 times and is suitable for making amplifiers and amps.

      Students who like to play the mill, mainly from the coupling capacitor, feedback capacitor, output terminal tube - gold seal tube, different devices have different sound performance.


      This kit configuration:

        Taiwan metal film resistor, non-inductive power resistor, ELNA-C feedback capacitor, Panasonic blue robe decoupling capacitor, Siemens coupling capacitor, Toshiba small triode

      Power tube is second-hand folding machine tube 2N3055 gold sealing tube

      For the best sound quality, the quiescent current is set to 1A per tube, that is, the voltage difference between the emitter cement resistor (0.1R) is 100MV.

      22W pure class A power amplifier, the heat is relatively large, please pay attention to heat

      Recommended input voltage, plus or minus 18VDC (optional with dual 15VAC-200W transformer rectification)

      Single-sided PCB

      15.6*7.4*1.6MM, 1OZ copper


      Package Included:

      1 x1 pair  HOOD JLH2003 Class A Single-ended power amplifier board 22W+22W 8ohm

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