2x4W Stereo Tube Amplifier Circuit

stereo tube amplifier circuit
Here the schematic diagram of 2x4W stereo tube amplifier which built based 5 power tubes component. This amplifier will produces up to 4 watt audio power for each output channel.

Components list:
C1, C4 = 200pF/600v
C2, C5 = 47nF/600v
C3, C6 = 22uF/25v
C7 = 47uF/450V
C8 = 33nF/450V
C9 = 10nF/1400v

R1A & B = 500KΩ Dual gang Potentiometer
R2, R6 = 1MΩ 1/2W
R3, R7 = 470KΩ 1/2W
R4, R8 = 220KΩ 1/2W
R5, R9 = 330Ω, wire-wound or metal oxide 2W
R10 = 750Ω, wire-wound 20W

Audio Output Transformer T2, T3
Primary (impedance) = 3300 Ω @ 400 cycles
Secondary (impedance) = 4 or 8 Ω @ 400 cycles

Power Transformer, T1
Primary = 117v 60 cycles
Sec. 1 = 600v CT @ 80mA
Sec. 2 = 5v @ 2A
Sec. 3 = 6.3v @ 4A

Tubes:
6SQ7-GT
6V6-GT
5Y3-GT – Full-wave vacuum rectifier

Circuit notes:

  • For finest audio reproduction results, 90db/watt speakers or higher efficiency should be utilized.
  • Do not forget hook-up wire, sockets, switch, and also a chassis or circuit board. All tubes are octal type and will require an octal socket.
  • Shield any hook-up wires utilized within the signal path between the input jack and the first audio tube.
  • R10 will create considerable heat, and care needs to be taken in its location. I utilized a large adjustable wire wound resistor for this and mounted it above the chassis. A choke coil in its place would give better performance and more closely resemble the electromagnet field inside the prototype.
  • A choke coil with a DC resistance approximate to 750 ohms may possibly be substituted for R10.

This 2x4W stereo tube amplifier circuit is taken from wkinsler.com

Incoming search terms:

Tags: 2x4W audio tube amplifier 2x4W stereo tube amplifier 2x4W tube amplifier 2x4W tube amplifier schematic

Related Post "2x4W Stereo Tube Amplifier Circuit"

400 Watt 70 Volt Amplifier
This is the schematic design of 400
150W Power Amplifier using Transistor
This is the circuit diagram of 150W
21W Class AB Audio Amplifier
This is the circuit design of 21W

Leave a reply "2x4W Stereo Tube Amplifier Circuit"