AusTex64
Well-known member
- Joined
- Jun 3, 2013
- Messages
- 533
Been studying. What do you think about the use of feedback in mic buffers? Have you done any listening to mics with and without feedback? I understand a big part of Klaus’ U87 mods is removing feedback, along with selected FET and bias, replaced transformer and caps, etc.
Feedback:
U47 - no
C12 - no
M49 - yes
ELA M251 - no
KM54 - yes
U67 - yes, and the most unique I’ve seen in a mic. Tertiary winding on the OT.
U87 - yes
I have looked at every mic schematic designed by Oliver Archut - no feedback on any of them.
I plan to record acoustic guitar tomorrow night with two of my “poor man’s KM54’s” (MV691 bodies with M94 capsule with custom tube buffer). One with feedback, one without. Should be interesting.
Curious to hear thoughts. Thanks!
Feedback:
U47 - no
C12 - no
M49 - yes
ELA M251 - no
KM54 - yes
U67 - yes, and the most unique I’ve seen in a mic. Tertiary winding on the OT.
U87 - yes
I have looked at every mic schematic designed by Oliver Archut - no feedback on any of them.
I plan to record acoustic guitar tomorrow night with two of my “poor man’s KM54’s” (MV691 bodies with M94 capsule with custom tube buffer). One with feedback, one without. Should be interesting.
Curious to hear thoughts. Thanks!