using cheap lapel mikes in hairline or behind ears

ASK:
I'm working on a local community theater production of "My Fair Lady" and we have to mike the two leads (Doolittle and Higgins). Like michael,We don't have any decent mikes to go over the ears, so I have to use a pair of wireless lavaliere mikes. The capsules are sort of clunky and hard to hide, so we've put Eliza's mike just above her ear, and Henry's under his collar, just peeking out the front.

The sound is acceptable, but tonality is not particularly nice.

Does anyone have any tips on anything I could try to get better high end response (4-16k)?

ANSWER:
Since you say the sound is acceptable but tonality is lacking, it seems that you are happy with the mic itself, and this could be solved with new placements.

Make sure that Eliza's capsule is firmly on a cheek bone and not the temple. If you move to far off hard bone, you lose high end fast. And the closer to her mouth you can get, the better(a hidden mic is of course desired).

That same concept goes for Henry. And since his is currently hidden right in front of his vocal cords, you are getting a lot of resonance from the mid-low frequencies. Again, If you could get his mic onto hard bone(forehead or cheek bone, avoid the jaw of course), I think that will help you out a lot.

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