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Old 02-11-2006, 02:02 PM   #2 (permalink)
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Location: Miami, FL
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Well I would say the blackberry is expecting mic level (around -40 to -50 dB) and I am sure your board is going to output line level (around +4 dB). So just pad the signal around 40 to 50 dB and you won't blow it out of the water.