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[Scott Hofmann]

Are CM311/AE Red (B+) + White(audio) to tip and CM311/AE shield to ring+sleeve the correct connections to Sennheiser 3.5mm plug? Google is not helping.

[Lee Buckalew]

Are CM311/AE Red (B+) + White(audio) to tip and CM311/AE shield to ring+sleeve the correct connections to Sennheiser 3.5mm plug? Google is not helping.

Scott,
Unless something has changed recently Sennheiser Evolution 3.5mm inputs on belt-pack transmitters are wired;
Tip = MIC+ and Bias +
Ring = Line Level (instrument at 1M Ohm)
Sleeve = Audio return and Bias return

ALSO NOTE that the unused input (mic or line) must be bridged to ground/sleeve.

I believe that you would want;
Red (Bias +) to Tip
White (Audio signal) to Tip
Shield to Sleeve and Sleeve bridged to Ring as well.

I have not done this myself so...caveat emptor.

Here is a link to the Sennheiser Tech Note.

https://sennheiserusa.happyfox.com/kb/article/551-wiring-configuration-for-the-ew-plug-35-mm

Lee

[Scott Hofmann]

Scott,
Unless something has changed recently Sennheiser Evolution 3.5mm inputs on belt-pack transmitters are wired;
Tip = MIC+ and Bias +
Ring = Line Level (instrument at 1M Ohm)
Sleeve = Audio return and Bias return

ALSO NOTE that the unused input (mic or line) must be bridged to ground/sleeve.

I believe that you would want;
Red (Bias +) to Tip
White (Audio signal) to Tip
Shield to Sleeve and Sleeve bridged to Ring as well.

I have not done this myself so...caveat emptor.

Here is a link to the Sennheiser Tech Note.

https://sennheiserusa.happyfox.com/kb/article/551-wiring-configuration-for-the-ew-plug-35-mm

Lee

Thank you very much!

[Jacob Balazer]

Sennheiser Evolution 3.5mm inputs on belt-pack transmitters are wired;
Tip = MIC+ and Bias +
Ring = Line Level (instrument at 1M Ohm)
Sleeve = Audio return and Bias return

ALSO NOTE that the unused input (mic or line) must be bridged to ground/sleeve.

That much is right.

I believe that you would want;
Red (Bias +) to Tip
White (Audio signal) to Tip
Shield to Sleeve and Sleeve bridged to Ring as well.

That won't work.  Red is the drain and white is the source.  If you put them at the same potential, nothing at all will happen.  https://www.akg.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw8df4fdc2/pdfs/AKG_CM311_Manual.pdf

The Crown CM311 is a 3-wire mic and the Sennheiser wireless transmitter only has two mic wires.  So you need to rewire the mic for common source mode:

Red (drain) to tip (positive bias and signal)
White (source) and shield (ground) connected to each other and connected to ring and sleeve

[Mac Kerr]

Red (drain) to tip (positive bias and signal)
White (source) and shield (ground) connected to each other and connected to ring and sleeve

Please go to your profile and change the "Name" field to your real first and last name as required by the posting rules displayed in the header at the top of the section, and in the Site Rules and Suggestions in the Forum Announcements section, and on the registration page when you registered.

Mac
admin

[Jacob Balazer]

Please go to your profile and change the "Name" field to your real first and last name as required by the posting rules displayed in the header at the top of the section, and in the Site Rules and Suggestions in the Forum Announcements section

Done.

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