5. APPLICATION
5.1 Using the SM PR4
It could not be simpler to use and operate the SM PR4. Each of the four pre-amplifier channels
has its own input and output and variable gain control.
Three steps:
1. Simply connect a signal for processing to one of the XLR balanced inputs on the front of
the SM PR4.
2. Make a connection from the corresponding channel output on the front of the SM PR4 to
your desired destination (Mixer, recorder, etc).
3. Adjust the variable gain control to the desired pre-amplified level. To ensure sure you do
not over pre-amplify your signal a peak clip indicator light has been provided on the front
panel of the SM PR4 for each channel. When illuminated, this light indicates that the pre-
amplifier is overloaded and that distortion will occur. Please turn down the variable gain
control for the currently selected channel until the peak clip light is no longer illuminated.
Always trust your ears, the Peak LED is after the gain control so you could actually distort the
input with a very high level.
