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If there isn't some fault in the analogue cabling, mic signals should easily travel 900 ft without noise or treble loss. That is, if the mics' Z is in the 50 Ohms range.
Apparently in this case there is some problem, either with power lines running too close to the mic lines, or bad connectors, or mics with way higher impedance. Re-doing the cabling might be the cheapest way?
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Microphones always make me sound louder and better! -- Guitar Girl |