User manual ROLLS MX422

[. . . ] This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Field Mixer MX422 NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING KNOWLEDGE OF AUDIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND PROPER SIGNAL LEVEL SETTINGS. ROLLS CORPORATION 5968 South 350 West Salt Lake City, UT 84107 Phone (801) 263-9053 FAX (801) 263-9068 www. rolls. com ROLLS CORPORATION SALT LAKE CITY, UTAH 1/05 Owner/Operator Manual INTRODUCTION Thank your for your purchase of the Rolls MX422 Field Mixer; Professional ENG mixer. Please read and review this manual carefully as it contains important information regarding the proper use and care of the MX422. If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the shipping carton and packing materials for safely transporting the unit in the future. [. . . ] During normal operation, with a properly set gain structure, the threshold of the limiter will not be reached. If extremely high input signal levels exist, such as in high SPL environments or with misadjusted settings, the limiter will activate to prevent the channel from clipping. Without a limiter, high signal conditions would overload the channel and cause distortion. Adjust the LIMITER THRESH control to a point above your normal operating levels, but safely below levels causing distortion or "pegging" of the VU meters. VU (Volume Units) meter ballistics correspond closely to how the human ear perceives loudness and provides a good visual indication of how loud a signal will be. SLATE TONE AND MICROPHONE The Slate Tone and Microphone circuit is used to notate scenes at the mixer location. When this button is pressed, a 20Hz tone is sent to the Main Outputs, and the Slate Microphone becomes active. When notating a scene - press and hold the Slate button, speak into the four-holed Slate microphone, and release. 1kHz TONE This oscillator is provided to set the gain structure between the MX422 and the next device in your signal chain. The Tone oscillator is set to output a 1 kHz sine wave to the Main Right and Left outputs (with the Output Level switch set in the out or LINE position). Note this tone is also sent to the Headphone outputs when the Headphone SOURCE button is in the MAIN position. It would be a good idea POWERING To power the MX422 and get it ready for operation: 1. Or, connect external DC power (the Rolls PS27) 12 VDC to the MX422 DC Input connector. Check battery life by pressing the BATT button. INPUT CHANNEL SETUP To set up a gain level for an input channel: 1. Connect a signal source (microphone or line level signal) to a channel input connector. Set the rear panel trim control at the 12 O'clock position (this is just a starting point). If you're using a condenser microphone, activate the Phantom Power by pressing in the phan button. Set the LEVEL Control at the 12 O'clock position (again - just a starting point). Set the channel PAN control for the desired signal position in the stereo field. Verify there is signal present on the output meter(s). OUTPUT CONNECTION To connect to the MX422 main Outputs 1. Set the output level switch to either LINE (switch out), or -30 dB (switch in). Verify that the next device in the signal chain is receiving signal from the MX422. HEADPHONE MONITORING 1. [. . . ] OUTPUT LEVEL (-30 dB / LINE): When pressed in, this button pads the Output signal by 30 dB. BATTERY SELECT: This switch selects which set of battery compartments are being used. When the switch is to the left, the left side (with the back panel facing you) battery compatments are being used. When the switch is to the right, the right side battery compartments are being used. [. . . ]