JLH 1969 Stereo Class A Audio Power Amplifier KIT 10 Watt Per Channel

November 10, 2011 amplifier, diy

JLH 1969 Stereo Class A Audio Power Amplifier KIT 10 Watt Per Channel

This is a stereo class A amplifier. The design is reference to the legendary JLH amplifier original 1969 version. 1 board / channel, the price is for 2 boards
DIY kit only. You need to weld the components and board by yourself—schematic will be attached.

Components have great influence to the sound performance as its simple design. Component with deferent kind or quality makes a different sound performance. We test before and chose the much more suitable ones in capacitor, and test result for your reference.

WIMA Series: Faster, suitable for listening to pop music
IRFA: Relatively light, suitable for listening to folk music
SPRAG: The slowest, the sound is very charm
Therefore the final circuit design using WIMA / 4.7UF (original disassemble capacitor)

Philips: elegant performance of the Philips capacitor
ROE: gorgeous performance of the ROE capacitor
SIEMENS: relatively neutral effect of SIEMENS capacitance
Therefore, this design uses the output capacitor Philips (original disassemble capacitor), the capacity to use 4700uf very good!

This is a stereo class A amplifier, all capacitors varieties that we choose have high temperature resistant as its high electric current and heat capacity.
As the high heat capacity, please install the appropriate heat sink.
As the amplifier kit particularity, can not provide return after assembly, please have some basic electronic and ability, then consider buying.