LIMITED WARRANTY This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase as shown on the purchaser's receipt. The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement (at our option), during the warranty period of any part which proves defective in material or workmanship under normal installation, use and service, provided the product is returned to Rolls Corporation, TRANSPORTATION CHARGES PREPAID. Products returned to us or to an authorized Service Center must be accompanied by a copy of the purchase receipt. In the absence of such purchase receipt, the warranty period shall be one (1) year from the date of manufacture. This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse, neglect, accident, destruction or alteration of the serial number, improper electrical voltages or currents, repair, alteration or maintenance by any person or party other than our own service facility or an authorized Service Center, or any use violative of instructions furnished by us. This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special, incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. ROLLS CORPORATION SALT LAKE CITY, UTAH 6/04 RM82 MIC LINE MIXER Eight Channel Audio Mixer 1 2 3 4 5 +20 +20 +20 +20 +20 TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE 6 7 8 MASTER MIC/LINE MIXER +20 +20 +20 0 TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE LEVEL 10 pwr RM82 OWNERS MANUAL INTRODUCTION Thank your for your purchase of the Rolls RM82 Mic Line eight channel audio mixer. It is intended for sound reinforcement or studio applications where several microphones or line sources need to be combined to a single output. Please review this manual for proper operation. SPECIFICATIONS Input Impedance: Max Input Level: TABLE OF CONTENTS 1. INTRODUCTION TABLE OF CONTENTS FEATURES INSPECTION DESCRIPTION Front Panel Rear Panel CONNECTION 1. Microphone and Main Output Connection 2. Connecting Two RM82 Units Together 3. Channel Direct Output 4. Channel Insertt OPERATION Setting the DIP switches Configuring the unit for Direct Output Operation Configuring the unit for Insert Operation Configuring the Output Level SCHEMATIC SPECIFICATIONS WARRANTY Input Connectors: Outputs: Max Gain: Tone Control: Phantom Power: Output Level: Output Impedance: Phase Shift: Max S/N ratio: THD: CMRR: Size: Weight: 2. 3. 4. 5. 6. BACK COVER Mic: 10K XLR balanced 1/4": 20K unbalanced Bus Input: 10K unbalanced Mic: 0 dBV balanced Line: +6 dBV 8: XLR, 8: 1/4" (Line), 1: RCA (Bus input) XLR bal., RCA unbalanced Prefade out Mic: 55 dB Line: 26 dB 12 dB Treble/Bass cut +48 VDC +22 dBV max 51 <10 degrees, 20Hz to 20 kHz 106 dB <.01% >52 dB (Mic) 19" x 1.75" x 6" (48.3 x 4.5 x 15 cm) 7 lbs. (3 kg) FEATURES: · 8 XLR Mic inputs · 8 1/4" unbalanced line inputs which may be internally jumpered to be Inserts, or Direct Outputs. · Individual phantom power switches for each channel · Front panel Trim and Tone controls · RCA Aux/Bus input and pre-master output for cascading units or recording · Balanced XLR output DIP SWITCH DEFAULT SETTING: JUMPER DEFAULT SETTING: ALL OFF 1/4" JACKS AS INPUT MAIN OUTPUT AS LINE INSPECTION 1. Unpack and inspect the RM82 box and package. 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. 2. Please visit our website at www.rolls.com and register your warranty at the "Register Your Warranty Here" text, or complete the Warranty Registration Card and return it to the factory. 1 6 SCHEMATIC FRONT PANEL 1 2 3 4 5 6 7 8 MASTER DESCRIPTION MIC/LINE MIXER +20 +20 +20 +20 +20 +20 +20 +20 0 TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE TRIM LEVEL TONE LEVEL 10 pwr RM82 NOTE: Descriptions for Channels 1 - 8 are identical. TRIM: Adjusts the sensitivity of the XLR Microphone Inputs. LEVEL: Adjusts the level of signal in the channel from off to +20 dB of gain. TONE:Cuts the signal up to 12 dB, below 200 Hz when turned clockwise, or above 6 kHz when turned counter-clockwise. MASTER LEVEL: Adjusts the Main Output signal level. pwr: LED indicating power is applied to the RM82. Power Switch: Applies power to the unit. Please ensure the power cable is connected to a properly grounded AC outlet. REAR PANEL SERIAL NUMBER 82PREFADE OUT CHANNEL 8 CHANNEL 7 CHANNEL 6 CHANNEL 5 CHANNEL 4 CHANNEL 3 CHANNEL 2 CHANNEL 1 MODEL RM82 PHANTOM POWER 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: DO NOT EXPOSE THIS OR MOISTURE EQUIPMENT TO RAIN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE BACK PANEL NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL RISQUE DE CHOC - NE PAS ENLEVER MAIN OUTPUT: XLR balanced jack containing the RM82 main output signal. PRE-FADE OUTPUT: RCA jack for connection to another RM81 Aux/Bus Input or to another device such as a recorder. AUX INPUT: RCA jack which connects directly to the RM81 mix bus. The jack may be connected to another RM81 Pre-Fade Output - making this unit the "Master". PHANTOM POWER SWITCHES: 8 individual DIP switches for applying 48 Volts of phantom power to the indicated channel's XLR Input. The phantom power is for powering condenser microphones. The Phantom Power switches are in the OFF position when the RM82 is shipped from the factory. CHANNEL INPUTS 1 - 8: 1/4" TS unbalanced, and XLR balanced input jacks. The eight 1/4" jacks come from the factory configured as line inputs and are electrically mixed with the XLR jacks. They may be used together if desired. These inputs may be reconfigured as either Direct Outputs, or Inserts. See page 4 for details. 5 A NOTE ABOUT ROLLS MICROPHONE PREAMPLIFIER CIRCUITS The Rolls servo-balanced Microphone Preamps feature many advantages over other mic preamps. Among these are simplicity of design, 40db or higher CMRR (common mode rejection ratio) than transistor input mic preamps. This means much lower noise on long input lines, and very low distortion at high gain. Discrete transistor preamps are non-linear at high gains, but not our design. We feature a higher signal swing, which means our preamps have more headroom before clipping. 2 CONNECTION 1. MICROPHONE AND MAIN OUTPUT CONNECTION Connect microphones to the XLR Inputs as shown here. If the microphones are condenser type, and require phantom power - remember to switch on (down) the corresponding Phantom Power switch. Connect the Output to the next device in your signal chain. SERIAL NUMBER 82- OPERATION CONFIGURING THE 1/4" INPUT JACKS AS DIRECT OUTPUTS The eight 1/4" Input jacks come from the factory configured as line inputs and are electrically mixed with the XLR jacks. They may be used together if desired. To configure a channel's 1/4" jack as a Direct Out, first remove the RM81 lid. For each channel there are dual three-pin headers with shorting jumper on two pins. The setting from the factory is on "IN". By moving the shorting jumpers to the configuration shown as "OUT" (one jumper up, the other down), the jack then becomes a Direct Output. CONFIGURING THE 1/4" INPUT JACKS AS INSERTS To configure a channel's 1/4" jack as an Insert, first remove the RM82 lid and locate the corresponding channel's dual three-pin header. Move both shorting jumpers down as shown below as "INSRT", the jack then becomes an Insert. PREFADE OUT CHANNEL 8 CHANNEL 7 MODEL RM82 PHANTOM POWER 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: 2. CONNECTING TWO RM82 UNITS TOGETHER SERIAL NUMBER 82PREFADE OUT CHANNEL 8 CHANNEL 7 MODEL RM82 PHANTOM POWER 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: MASTER UNIT SERIAL NUMBER 82- PREFADE OUT CHANNEL 8 CHANNEL 7 MODEL RM82 PHANTOM POWER 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: SLAVE UNIT Using a single RCA cable, connect from the Pre-Fader Output of the "Slave" unit to the Aux Bus input of the "Master" unit. This "Master" unit's Master Level control will now adjust the overall level of both units. Direct Output Insert Input 3. CHANNEL DIRECT OUTPUT For each channel you wish to have Direct Output access, you must first configure that channel's 1/4" Input as a Direct Output. Follow the instructions shown on page 4. Connect a 1/4" unbalanced TipSleeve cable to the channel's 1/4" jack and to the next device you want the signal sent to. Note, the channel's signal will still be present at the RM82 Main Output. SERIAL NUMBER 82PREFADE OUT CHANNEL 8 CHANNEL 7 MODEL RM82 PHANTOM POWER CONFIGURING THE OUTPUT FOR MIC OR LINE LEVEL The RM82 ships from the factory with the XLR Main Output configured as Line Level (+4 dB). To change this to Mic Level (-10 dB), carefully remove the lid, locate the Mic/Line header which is near the Main Output jack. Move the two jumpers from the Line Level position (shown below on the right), to the Mic Level position (shown on the left). 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: 4. CHANNEL INSERT For each channel you wish to have the ability to insert into, you must first configure that channel's 1/4" Input as an INSERT. Follow the instructions shown on page 4. Connect a 1/4" Tip-Ring-Sleeve INSERT cable into the channel's 1/4" jack, and to the processor or other device you want the signal connected to. 82- SERIAL NUMBER PREFADE OUT CHANNEL 8 CHANNEL 7 Mic Level Line Level MODEL RM82 PHANTOM POWER 120 VAC 50/60 Hz 15 VA MADE IN U.S.A. on MAIN OUT AUX BUSS IN 87654321 WARNING: JUMPER DEFAULTS The internal jumpers are configured from the factory as follows: 1/4" = INPUTS MAIN OUT LEVEL = LINE LEVEL 3 4 ...