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Wireless: What mic / earpiece impedances is the MD-XLR headset adapter looking for?

Wireless: What mic / earpiece impedances is the MD-XLR headset adapter looking for?

Apr 06, 2019
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Question:  I'm thinking of using a David Clark type headset on a DX210 system, specifically with a BP210 beltpac using an MD-XLRM headset adapter.  Is this possible?
Answer:  The MD-XLR wants to see a dynamic MIC  impedance of from 150Ω to 200Ω and a speaker of no less than 32Ω... higher is better. 
You have to be careful with David Clark aviation headsets since their MIC impedance can be as low as 5Ω, so using one in this instance would probably result in an impedance mismatch / low mic audio into the BP210 beltpac.  A better way to go in this situation would be to use a CC-400 type headset with the MD-XLRM headset adapter.

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