DIY наборы 2 шт. 25 Вт бленда 1969 класс A усилитель мощности аудио Плата | Электроника

DIY наборы 2 шт. 25 Вт бленда 1969 класс A усилитель мощности аудио Плата | Электроника

RM1307731642402279

HOOD1969 is undoubtedly one of the most popular power amplifier circuits in history. It was designed by well-known British acoustic artist J.

Hood in 1969 and has been used for many decades in the world. Some people use it to compare with 300B amplifier to illustrate The sound is toxic, I believe most of the fans of its name has long been known.

Send mica mounting screws

General HD1969, sound quality is recognized by everyone, only the shortcomings of only 10-13W, driving a large speaker a little hard, this version uses Toshiba 15A 2SC5200 drive, the circuit is optimized, the output power and current greatly improved, the output power can be increased to 25W A state

1 using 6-pipe program, including two electronic buffer filter, you can avoid switching on and off when the rumble impact sound,

 the speaker is a good protection, 4-tube board, the boot is absolutely flutter a long-term use of damaged speakers.

2 using 4-way HD1969, under normal circumstances, each channel with a minimum of 30000UF capacitor can barely guarantee no noise, because the AC ripple is very large,

 6-tube version, as long as the filter with 4700UF capacitor can be (Such as 

electronic filter Darlington method, the magnification of 1000, the base connected to the 220U capacitor, the filtering effect is equivalent to the 220,000 micro-filter (220X1000) filtering effect, 

Large capacitor for the original board disassemble Japan Nikon capacitor 18000UF 35V(Used)

therefore, to achieve very quiet, detail, level, 6 tube effect and 

cost are better than 4 tubes.

Siemens output capacitor, Japan's Panasonic Gold FC electrolytic, Taiwan bent copper pin 1% precision resistors

Power supply:AC12V~28V

PCB size: 127MMX48MM

Notice: It's DIY KITS , Didn't Welding , need Welding it by yourself