Dynaco 6V6 10W ultra linear push-pull amplifier stereo PCB board LG183 also suitable for pushing 6P6P 6P3P 6CA7 KT66 EL34 | Электроника

Dynaco 6V6 10W ultra linear push-pull amplifier stereo PCB board LG183 also suitable for pushing 6P6P 6P3P 6CA7 KT66 EL34 | Электроника

Dynaco 6V6 ultra linear push-pull amplifier PCB board stereo.
The famous American audio Dynaco amplifier is well-known, and there is nothing you do n’t know about playing the mobile robot.
Dynaco 6V6 ultra-linear circuit, 6SL7 (6N9P) tubes, 2 amplified phase-inverted push-pull outputs, 4 4V6 tubes, 4 6V6 tubes are designed on the board for easy installation.
Dynaco 6V6 has classic circuit and clever design. The 6SL7 (6N9P) tube has two functions, which is both voltage amplification and automatic balance inversion, and the 1K resistor is the finishing touch. This resistor is both the cathode bias resistor of 6SL7 and the secondary of the output transformer. The tail of the inverting stage is also a loop negative feedback resistor! One part and three jobs, not only save parts, but also reduce the additional noise and distortion of parts.
The power stage uses an ultra-linear (UL) structure, taking into account the balance between efficiency and distortion. After a slight modification, the output power can reach 10W THD = 0.4%, and the damping is greater than 4.0. With such a simple circuit, such an index is really superior!
The power supply is more economical. With only CRC filtering, the S / N of the whole machine can be weighted up to -107db A (absolute residual noise voltage 160uV). The low noise floor is basically the ear close to the speaker to stop to a little noise . If inductive filtering is used, it has the icing on the cake.
Exquisite FR4 double-sided glass fiber board gold-plated board, board size 240 × 110mm, board thickness 2mm. The resistance and capacitance parameters are marked on the board, the circuit performance is excellent, the wiring is reasonable, and the line is quiet. As long as the wiring is correct, one-time success is a shortcut to success. It is also suitable for pushing 6P6P, 6P3P, 6CA7, KT66, EL34 and other electronic tubes.
The design of component pitch, tube base pitch and foot hole size is reasonable, suitable for large and small power resistors and capacitors. The electronic tube seats are designed for dual use, and the resistance-capacitance components can be assembled and welded on both sides.
The electronic tube seats are designed with round foot holes and flat foot holes. The flat foot holes are easier to weld than the round foot holes without tin leakage, and are suitable for various electronic tube DIY circuits.
Assemble components such as gold-plated tube base, 25W aluminum shell cathode resistance, Japanese ruby electrolysis, Dutch electrolysis, German WIMA capacitor cross-connect, precision five-ring resistor, Japanese chemical or ELNA supplement electrolysis
The two-sided character of the resistance-capacitance element can be assembled on both sides, and the tube can be installed exposed. Note: The pipe base should be assembled with characters, and it cannot be reversed.
The port identification on the board is detailed, and the input, output, feedback, choke, power transformer, output transformer, cathode feedback connection port, filament, etc. are marked in detail.The circuit board can be used for the KT66 power tube. Replace the two 250 ohm 25W aluminum shell resistors on the board with 180Ω. Please pay attention when welding the machine.LG183K empty board yellow board.
LG183 finished board yellow plate is installed, excluding tube
LG183K finished board yellow plate resistance-capacitance components reverse installation (not including electron tube), resistance-capacitance components reverse installation electron tube can be exposedDeclaration:The components on the finished board are different due to different assembly batches. The types, brands, models, and specifications of some of the components will be slightly different. The components and parameters assembled on the board will prevail! Some components on the circuit board are second-hand disassembled products, and the finished board is sold normally.