Friday, May 2, 2025

The very nice Shure Unidyne B, 515SD, 515SB microphone

 At your risk.


This microphone sounds very nice connected directly to the preamplifier! The bass sounds correct as this microphone is engineered to start cutting below 200Hz thereby correcting the bass emphasis proximity effect.


Signal Path:


male voice singing When I Fall in Love - Nat King Cole (same key) - Shure 515SD  made in Mexico at 24in, 30 degrees above head -  Sony TC-D5M - TDK SAX - Sony TC-D5M (reproducing) - Pleiades 2N3053 power amplifier - Celestion Ditton 150 - small room with some panel bass absorbers


Same experiment was repeated outdoors at a noisy environment. Impressive results, voice sounds closer to reproduction speaker/ High frequency definition increases.


This is possibly the first microphone I have bought. And one of the 1st I had is the original Shure 515SB made in U.S.A. which was used for lectures in my family's central branch of Homer schools of English. It sounds amazing.


Foe further tests windshields will be needed.










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