http://www.americanmusical.com/Item--i-SHU-A95UFM . Or you could build a resistor network, but this is so much easier, and you know it'll match up correctly. Just make sure the unbalanced input is set for mic level, not line level. Now that I think about it, if the tip of the TRS corresponds to XLR pin 2 on the mic cable, it should work as is if you're indeed plugged into a mic-level input.
Apparently on the Firewire 1814, you only have 2 mic-level inputs available at one time. Adding a third mic into any other input while using the 2 XLR mic inputs probably won't work without first running the third mic into a preamp(in order to boost it to line level). Then a line input will see enough signal. A simple transformer(above link) won't give this boost. Neither will a cable rewire.
Best, Paul
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WUDAYAKNOW.. For the first time in my life, I'm wrong again!!
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