User manual ROLLS RM70

[. . . ] SCHEMATIC Mic/Source Selector RM70 SPECIFICATIONS Input Impedance: Max Input Level: Max Gain: In/Out Connectors: Phantom Power: Output Level: Output Impedance: Phase Shift: Tone Controls (Sources): Tone Controls (Mic): Tone Shelving Slope Max S/N ratio: Nose Floor: THD: CMRR: Size: Weight: 600 XLR balanced 22K 22K gold plated RCA 22K 1/4" TS unbal. -14 dBV Mic level +20 dB Line levl Source: 24 dBV Mic: 60 dB Source: 26 dB 3: XLR, 4: Stereo RCA, 3: 1/4", 1: 3. 5mm, 1 screw terminal +12 VDC +17 dBV max 51 <10 degrees, 20Hz to 20 kHz +/-12 dB 100 Hz Bass +/-12 dB 11kHz Treble -3dB; 300 Hz C. W. 6 dB / Octave 96 dB - 80 dB <. 025% >52 dB (Mic) 19" x 1. 75" x 6" (48. 3 x 4. 5 x 15 cm) Mic: Line: Source: Mic/Loop: Mic: 5 lbs. [. . . ] Connect only microphone level signals to Mic 3. CONNECTION / OPERATION Connect source signals (CD players, MP3 players, tuners, etc. ) to the Source Inputs 1 - 5. DIP SWITCH SETTINGS DESCRIPTION FRONT PANEL - Vol 1 - 3: Adjust the volume of input from the XLR Mic inputs. - Clip 1 - 3: Lights when the Mic Inputs signal reaches 3 dB below clipping. - Tone 1 - 3: Adjusts the relative frequency content of the Mic signals. When turned counterclockwise, the treble content is cut (3 dB down at 4 kHz). - Source Select: Selects which source input signal is sent to the outputs. - Bass: Adjusts the low frequencies of the source inputs +/-12 dB at 100 Hz. - Treble: Adjusts the high frequencies of the source inputs +/-12 dB at 11 kHz. - Pwr: Indicates that power has been applied to the RM70, and the unit is on. To apply the 12 volts of phantom power to the individual microphones, move the corresponding PHAN switch DOWN. S t e If the Talkover function is desired, press down the DIP switch labeled T. O. PHAN r The signal present at Mic 1 will mute all signals at the Source Inputs, excluding the Music On Hold. Mic 2 and Mic 3 signals will still be sent to the outputs when the talkover function is engaged and the sources are muted. If operating in Stereo Mode, move the farthest left DIP switch up, if in Mono n Mode, press the DIP switch down. When in Mono Mode - the mixed right/left signal is present at both the Right and Left output jack. The Music On Hold output and level control are designed to send the signal from Source 3 to a telephone Music-On-Hold system. Refer to the owners manual of the telephone system for proper connection and adjustment. REAR PANEL Remote Volume Control To control the overall volume of the RM70 in a remote location, wire a 100K ohm Linear Taper potentiometer to the Remote Volume Control screw terminals as shown in Figure 1. Mic Insert To connect a signal processor to the RM70 microphone signal(s), use an insert plug, or cable wired as shown in Figure 2. [. . . ] - Remote Volume Control: Screw terminals which connect to a 100K Ohm linear tapered potentiometer for controlling the main output level at a remote location. - Music On Hold Output: Screw terminals for connection to a phone system for the music on hold function. - Left and Right Main Outputs: 1/4" TRS balanced main outputs containing all Mic and selected source signals. Figure 1. 100 K Ohm Linear Taper Potentiometer Figure 2. [. . . ]