aeolian
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Re:m-audio fast track problems - 2007/01/28 15:44
I'm guessing here, but are you using standard passive pickups on the guitar? You'll probably need to use active pickups or a guitar preamp before going into the audio interface because the impedance of pickups is too high. An effects unit between the guitar and the interface should sort it out if that is the problem. This will raise the signal going into the interface to line level.
Condenser mics have an incredibly high impedance, so they usually have a preamp as near to the capsule as possible (to reduce noise). This is what the phantom power is used for. That and to keep the diaphragm separated from the other capacitance surface.
Phantom power uses +48V most often, and this is applied to both lines of the balanced pair. In this way you can apply phantom power to most dynamic mics without a problem (useful if you are using both condensers and dynamics without individual selectors on each input). Hence the name. Don't plug in or remove a plug when phantom power is applied, and don't use certain types of mics with phantom power (like ribbon mics).
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