OK,
These are low dollar mics that attempt to look like an SM58. So clones. No guarantees that they bear ANY resemblance to an SM58.
Yes, your mics are unbalanced. I doubt a simple mono to stereo adapter will work. In fact, a dynamic mic may not work well because all dynamic mics are low in sensitivity compared to condenser mics. Because of this, if the camera preamp has not been designed to provide good, clean, quiet gain, you will be unhappy with the results.
That means the mics themselves may be the problem. Brian or Craig gave you a list of professional mics used for this type of job. Perhaps this is the time to begin building a proper audio kit. These are professional mics. They require a cable with female XLR on one end and a 1/8″ TRS on the other that has been specially wired with pin 2 to the tip and ring. Tip and ring will connect to the left and right camera inputs properly. This connection puts the audio on both tracks of your camcorder.
What city are you in?
Regards,
Ty Ford
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