Do you guys know anyone who might custom build me a Y cable with threaded male ends that would fit my Senns?
Just a thought; did you remove the locking rings from the Sennheisers?
I have a similar setup with RØDE Lavaliers, and if the locking rings aren’t removed, the connection is extremely fragile. The locking rings should be removed when using a non locking Y cable.
Cheers
N