The RC 35 contains the 1.5" large dynamic element of the PR 35 which produces a wide frequency response, natural vocal articulation and high rear rejection from the sides and rear. The Heil replacement capsules are interchangeable with any of the screw on type hand held transmitters that receive a 31.3mm/pitch 1.0mm. Some hand held transmitters have a .035 inch hexagonal-head set screw to secure the microphone capsule. If your transmitter has that, loosen the set screw in the handle of the microphone-transmitter before attempting to unscrew the original capsule.
Clive Young (Live Sound Engineer) - "For wireless mics, the whole Heil line is making me rethink what works and what doesn't on certain applications. He's (Bob Heil) got a pretty cool approach going. I love his wireless retrofit of the RC 35 on to the Shure RF systems."
Cam Beachley (Live Sound Engineer) - "When I first reached out to Bob Heil, I was mainly looking for a vocal mic that did not change response when the artist 'cups' the mic. Boy did I find that in the RC35 wireless capsule. It sounds huge, has amazing rejection and I was immediately sold on Heil mics. They capture the sound perfectly- no exaggerated highs or lows, scooped mids. They reproduce the source, the whole source, nothing but the source. "
