I wondered if a capsule like the original brass AKG CK-12 can be adjusted to pickup less bass or more treble. I'm not familiar with what type of mods can be made to an old capsule like the original CK-12 but I'd like to know. Also, who is a good tech to perform such mod if it is possible?
Tracy Korby, besides being a top repair guy for vintage mics and making his own capsules for his own line of mics, does custom modification of mics. Quite a few recording artists have had their mics adjusted to their own desires. I don't know if this involves messing around with the capsules or not.