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



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

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Описание товара

Dynaco 6V6 10W ultra linear push-pull amplifier stereo PCB board LG183 also suitable for pushing 6P6P 6P3P 6CA7 KT66 EL34 | ЭлектроникаDynaco 6V6 10W ultra linear push-pull amplifier stereo PCB board LG183 also suitable for pushing 6P6P 6P3P 6CA7 KT66 EL34 | ЭлектроникаDynaco 6V6 10W ultra linear push-pull amplifier stereo PCB board LG183 also suitable for pushing 6P6P 6P3P 6CA7 KT66 EL34 | ЭлектроникаDynaco 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 tubeLG183K finished board yellow plate
resistance-capacitance components reverse installation (not including
electron tube), resistance-capacitance components reverse installation
electron tube can be exposed
Declaration: 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.
package include: finished board*1( not include the tubes)Dynaco Dynaco is an old-fashioned audio
manufacturer born in the late 1950s in the United States. During the
heyday of vacuum tubes, Dynaco once launched SCA35 pre-stage, Stereo30
and Stereo70 post-stage, which became the design basis of a series of
Dynaco products. After 1966, the transistor became a trendy thing, and
Dynaco also had to launch SCA80 and Stereo120 to meet the market.
Unexpectedly, it became the main cause of the company's gasless future.
After Dynaco changed hands several times, the traditional "daring" sound
style has not changed. The current Dynaco products, although using
modern production technology, still insist on using their traditional
circuit design. In addition, they also insisted on the real and
inexpensive civilian route, using the cost as much as possible in the
internal design, and not wasting much on the appearance. Although the
black box is unremarkable, it is a simple and good-looking product in
the eyes of a pedestrian.
The finished board installation effect diagram is as follows





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