Clyde,
You’re in Manila? Do you practice Ho’oponopono?
Now on to other things.
Bias Voltage is a 2-5 voltage used to power some electret condenser mics. It is NOT Phantom Power. Phantom Power is for externally polarized mics. You can not run a phantom powered mic with bias voltage. This is for your general information here.
Hard to say if your plan will work, but the only way to test is to try. Does the mic with the M9 have a TRS or a TS plug? If it has a TRS plug that MAY indicate that the transmitter is expecting a balanced input. It does not GUARANTEE that, however. You may have to fiddle around with the connections. It used to be that on a G3 Sennheiser tip and ground were for mic and ring to ground were for line level. (or vice versa). I never had to deal with the issue, but you may have to in figuring out the best input plan.
If the M9 mic has a TS plug then audio to tip and ground to sleeve should work.
Any questions?
Ty Ford
Cow Audio Forum Leader
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