JLH Shunt feedback phono amp construction

[jamesfeline]

power up and test the PSU

 

[jamesfeline]

Phono wires (input) MM / MC input screen cables fitted

 

[jamesfeline]

Main phono PCB finally completed

 

[jamesfeline]

this is the earth lift section on the power supply PCB

 

[jamesfeline]

don't panic the PCB will be cleaned from dust & debris

 

[jamesfeline]

Transformer connections

plus sec fuses and power LED

 

[jamesfeline]

Hello all

I have managed to clone the original PCB with some enhancements

 

[jamesfeline]

I have added

1. 2oz copper
2. Gold plated track (bottom and top main earth plain
3. heat resistance pads to help soldering

plus is an exact same size PCB as a drop-in replacement for original JLH enclosures

 

[hbtaudio]

👍
I love this equalizer - maybe my next but one project?

regards,
HBt.

 

[jamesfeline]

few pics

 

[jamesfeline]

 

[jamesfeline]

 

[jamesfeline]

 

[jamesfeline]

I am pleased how these have turned out

 

[jamesfeline]

Hello

Happy to sell some of this PCB's (at cost) plus postage
I will put some in the for-sale section (pm if interested)

I have a photo for the silk screen component overlay plus instruction manual

 

[as_audio]

Where is the origin or first publication of this schematic ? Thanks.

 

[jamesfeline]

Hello

It was a kit sold by Hart electronics and designed by John Linsley Hood approximately 2008 give or take a few years