Art RP-1, User Manual

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7
So increasing the input impedance seen by the mic using the
impedance pots on the Dual RP will result in an optimum
performance from the ribbon mic used. If the preamp or mixer
input impedance is too low then you will start to limit the
frequency response of the ribbon mic. When this occurs, the
low-end of the microphone’s sound quality will be limited and
the transient response will sound flat degrading the overall
performance of the microphone. So by adjusting the impedance
pot on the Dual RP, you can achieve a clean full frequency
response from your microphones using the Dual RP.
T he beauty of the RP-1 may be the ability to operate at
higher impedance or control the impedance vs. the mixer
1
you are currently using.
1
A Phantom power capable input has around 13K maximum
impedance simply due to the 6.8k Phantom power pull-up
resistors.