Hello folks~
I've mod the Stellar CM1 (as same as older APEX460) with "FOX 460 MOD KIT" and "VPS1 PSU KIT" from MicrophoneParts.com.
I used Tim's CT12 capsule , GE6072a, AMI T14 with the "FOX 460 KIT".
It worked fine with PSU which was just replaced diodes D5, D6.
After that , I decided to mod the PSU with the "VPS1 PSU KIT" to get more accurate B+ and Heat.
But when I finished and connected my mic and tested, I got noise like "Aeeeeeeeeee~" which was followed mic preamp gain value.
The stock PSU was old version without words on transformer ,and transformer was screwed on PCB with ground wire from power plug.
Can anyone please give me some advice?
I've mod the Stellar CM1 (as same as older APEX460) with "FOX 460 MOD KIT" and "VPS1 PSU KIT" from MicrophoneParts.com.
I used Tim's CT12 capsule , GE6072a, AMI T14 with the "FOX 460 KIT".
It worked fine with PSU which was just replaced diodes D5, D6.
After that , I decided to mod the PSU with the "VPS1 PSU KIT" to get more accurate B+ and Heat.
But when I finished and connected my mic and tested, I got noise like "Aeeeeeeeeee~" which was followed mic preamp gain value.
The stock PSU was old version without words on transformer ,and transformer was screwed on PCB with ground wire from power plug.
Can anyone please give me some advice?