Sound Enhancer IS 5022 Professional Mk 2 ISP

Got hold off 2 Sound Enhancer IS 5022 Professional Mk 2 ISP with F3D  upgrade but without power supply.

 

 

TDA1373 Sample Rate Converter and SM5841 Digital Filter

 

 

 

Lowdrop lm2940c

Quick power and audio testing unit 1

Quick power and audio testing unit  2

Build a powersupply  based on LM317 & LM337,   with 2 x 15ac Volt and 1 x 9ac volt transformers

Oeps some huming

Tested with 2 x18ac volt x 1 x 9ac volt,  Much better results.

Testing with newly build power supply

 

 

 

New Design power supply,  a render without heatsink.

The new powersupply

 

Is the powersupply quiet – Digital silence

Multitone – 20 dbBfs

Building new version off the power supply, the old design worked correctly but produced to much heat  , testing bigger heat sink