DAC – JLH1969 – 10W Class A Power Amplifier – PCB

Overview:

This is a bare PCB of power amplifier with reference to the legendary JLH 1969 class A amplifier. It is capable of delivering 10W into 8 ohms. This is a very well designed audio power amplifier that will give you true Hi-Fi quality suitable for the most demanding HiFi Power Amplifier build. It provides high input sensitivity, low distortion, good frequency response and operating stability. 

While JLH 1969 is a simple design, it is still one of the best transistor amplifier. Two of these PCB's can be used together to make a stereo amplifier.

Technical Specifications:

Power: 10W RMS

Amplifier topology: Class A

Supply Voltage: 25V DC (Single Rail)

Features:

• Pure class A amplification
• High quality dual layer PCB
• Excellent value for money

Applications:

• Best for Bookshelf speaker's
• Mono block amplifier
• Instrument amplifier
• Active Speakers

Schematics:

Bill of Material (BOM):

Usage notes:

1. This is a amplifier PCB and hence only users who are well versed in electrical/audio field should buy the product. It’s not a responsibility of the seller for any accidents/hazards arising out of improper /inexperienced usage.
2. Connections are clearly marked on PCB and also in image. Do not interchange the wiring connections.
3. Always use a Mains Bulb Tester (MBT) before powering on for the first time.
4. Do not touch any part of the circuit unless the AC mains are unplugged and PSU is completely discharged.
5. Never operate the amplifier without a heat sink – even for testing, even for a short period. The output transistors will overheat and will be damaged.
6. Please note that you need to put a jumper from GND to the Ground Plane or to the closest leg of R9 pad to have the GND to make contact with the ground plane.