Author Topic: DIY: AMB lab sigma 22 regulated power supply  (Read 1120 times)

jb

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 301
    • View Profile
DIY: AMB lab sigma 22 regulated power supply
« on: July 04, 2017, 10:56:10 AM »
We spent few hours solder two set of the sigma 22 regulated power supply from AMB lab. The PCB design is quite nicely done, but supplier have send some wrong value resistor parts , so could not done the measurement till we get the right parts. The circuit is quite simple and suppose quite low noise and good for audiophile application. Originally design is use to power their own power amplifier. Stay tune for our test measurement and listening test for audio...

http://www.amb.org/audio/sigma22/





« Last Edit: July 16, 2017, 05:50:29 PM by jb »

jb

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 301
    • View Profile
Re: DIY: AMB lab sigma 22 regulated power supply
« Reply #1 on: November 13, 2018, 11:16:54 AM »


after many months, we finally manage to get all the required transformer and parts to complete this project!!

jb

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 301
    • View Profile
Re: DIY: AMB lab sigma 22 regulated power supply
« Reply #2 on: November 13, 2018, 11:19:15 AM »




Next is wait for the bro to test it in his system and check whether there is better improvement in sound quality!

sydney1128

  • Global Moderator
  • Full Member
  • *****
  • Posts: 107
    • View Profile
Re: DIY: AMB lab sigma 22 regulated power supply
« Reply #3 on: November 19, 2018, 03:10:58 PM »
Finally hook it up and start spinning my LP again after a few weeks.
I'm just getting lazy  ;D

Managed to hear for about 3 hours today.
Now it does get better control, more "muscle" with clearer & stable imaging.
Bare in mind I am using really cheap Belden wire with Neutrik plug for the leads from power supply to my Project RS phono amp.

I would need more hours to hear the improvement....
Guys, please be patient with me as it will take a while for me to spin records again  ;D