OPERATORS MANUAL MLM 103 MIC/LINE MIXER QUICK START If you don't get any further, at least read this section to get the best gain structure out of the MLM 103. INPUTS 1 through 6 may be microphone or line level. The choice between the two is made by setting the Input’s LINE push-button on the rear panel. Push the PHANTOM POWER button (when needed) for each pair of Inputs. Using a screwdriver, adjust the TRIM for each Input so that the front panel OL LED illuminates only occasionally during extreme peaks. The three-band Equalizer settings will influence this, so keep an eye on the OL when making EQ adjustments. Now adjust the LEVEL for each Input. Assign each Input to the desired Output by pushing any combination of the A, B, or AUX ASSIGN buttons. INPUTS 7/8 and 9/10 are stereo line level Inputs. Assign each stereo input to the desired output as follows: When the A/B ASSIGN button is engaged and the MONO button is not engaged, INPUT 7 (or 9) is routed to the A Output, while INPUT 8 (or 10) is routed to the B Output. When the both the A/B ASSIGN and MONO buttons are engaged, both Inputs of 7/8 (or 9/10) will route to both the A and B Output. The AUX ASSIGN button is always a mono mix of the stereo channel. MLM 103 CONNECTION INPUTS The MLM 103 has ten balanced Euroblock Inputs. Use only shielded cable. For best noise rejection use two-conductor-plus-shielded wire, even for unbalanced operation. Connect the non-inverting (positive) audio lines to the “+” terminals, and the inverting (negative) lines to the “–” terminals. Connect the shields to the “ground” terminals. For those installations where the MLM 103’s internal shield-to-chassis connection causes interference, connect the shields directly to chassis PEM nuts directly above each pair of Euroblock connectors. Be sure to bite through the paint with the star washer and keep the shields wrapped around the audio conductors as much as possible. For the “theoretical” best ElectroMagnetic Interference (EMI) immunity, connect the shields at both ends of the cables. (For more information WEAR PARTS: This product contains no wear parts. on connections, see RaneNote 110, “Sound System Interconnection” later in this manual or on Rane’s web site.) MONO INPUTS 1-6 can accept either mic or line level sources. When connecting line level signals, push the rear panel button in for LINE. For mic signals, be sure the button is in the MIC (out) position. STEREO INPUTS 7/8 and 9/10 accept line level stereo and mono sources. OUTPUTS The MLM 103’s OUTPUTS (and DIRECT OUTPUTS) are balanced. The same wiring conventions as the Euroblock Inputs apply. Manual-1 FRONT PANEL DESCRIPTION 햲 Equalizer level controls are used to contour the frequency response of the desired Input. 햳 Mic/Line OUTPUT ASSIGN buttons. When the A button is engaged, the Mic/Line Input’s audio is routed to Output A. When the B button is engaged, the Mic/Line Input’s audio is routed to Output B. When the AUX button is engaged, the Mic/ Line Input’s audio is routed to the Aux Output. Any (or all) of the ASSIGN buttons can be engaged simultaneously. 햴 Mic/Line INPUT LEVEL controls 1-6 determine the amount of signal to be delivered to the assigned Outputs. 햵 Mic/Line OVERLOAD LED monitors the signal level before and after the Equalizer. 햶 Stereo Line OUTPUT ASSIGN buttons. When the A/B assign button is engaged and the MONO button is not engaged, Input 7 (or 9) is routed to the A Output, while Input 8 (or 10) is routed to the B Output. When both the A/B ASSIGN and MONO buttons are engaged, both Inputs of 7 and 8 (or 9 and 10) will be routed to both the A and B Output. The AUX ASSIGN button is a mono mix of the stereo Inputs. 햷 Stereo Line INPUT LEVEL controls 7/8 and 9/10 determine the amount of stereo or mono line signal to be delivered to the assigned Outputs. 햸 Stereo Line OVERLOAD LED monitors the signal levels after the Equalizer and after the line gain stage. 햹 Output Meters indicate the overall levels of Outputs A, B and the AUX Output. The Meters are “peak hold”. 햺 A, B and AUX OUTPUT LEVEL controls set the Output Level for A, B and AUX Outputs. 햻 POWER LED lights whenever adequate power is applied to the unit. Manual-2 REAR PANEL DESCRIPTION 햲 MIC/LINE INPUT TRIM controls 1-6 adjust the input gain of the Mic/Line Inputs. The gain range for Mic level is 12 to 60 dB. The gain range for Line level is -4 to 12 dB. 햳 LINE/mic INPUT buttons 1-6 switch the sensitivity and input impedance for either a microphone or line input. Mic level is selected when the button is in the “out” position. Line level is selected when the button is in the “in” position. 햴 MIC/LINE INPUT connectors 1-6 are balanced Euroblocks that connect either microphone or line signals. 햵 PHANTOM POWER button applies 12 volt phantom power to each pair of Mic/Line Inputs. 햶 STEREO LINE INPUT connectors 7/8 and 9/10 are pairs of balanced Euroblock connectors, to accommodate stereo or mono line level signals. 햷 PRE/post MIX LEVEL DIRECT OUTPUT buttons. When this switch is in the “in” position, the Direct Output signal is not affected by the Input’s Level control. When this switch is in the “out” position, the Direct Output signal is affected by the Input’s Level control. 햸 DIRECT OUTPUTS are balanced Euroblocks that directly connect each Mic/Line Input signal to other audio devices as needed. These Direct Outputs are post-Equalizer. 햹 A, B and AUX OUTPUT connectors. One 6-post balanced Euroblock connects the A mix and the B mix to other audio devices as needed. The other 3-post balanced Euroblock connects the AUX mix to other audio devices as needed. Manual-3 MLM 103 OPERATION MONO MICROPHONE/LINE LEVEL INPUTS 1-6 The rear-panel MIC/LINE INPUT TRIM adjusts the input gain of these Inputs, before the front panel LEVEL controls. When an Input’s LINE/mic button is in the “out” position (Mic Level), the gain range is 12 to 60 dB. When an Input’s LINE/mic button is in the “in” position (Line Level), the gain range is -4 to 12 dB. First, input some “loud” source material (like a pop metal or disco CD, give a kid a mic, etc.) Then, using a screwdriver, adjust the TRIM for each Input so that the front panel OL LED illuminates only occasionally during extreme peaks. The 3-band Equalizer settings will influence this, so keep on eye on the OL when making EQ adjustments. Push the PHANTOM POWER button (when needed) for each pair of Inputs. If the LINE/mic button is engaged (Line Level), Phantom Power is automatically defeated for that Input. The PHANTOM POWER button activates 12 volts which is sufficient power for all but the most esoteric condenser mics. If in doubt, check the manufacturer’s microphone specs. Assign each Input to the desired Output by pushing any combination of the A, B or AUX ASSIGN buttons. The LEVEL of each Input can now be adjusted as needed without danger of blowing your speakers, or scaring the neighbors, whichever you deem worse. STEREO LINE LEVEL INPUTS 7/8 and 9/10 When a stereo source (CD, DVD, cassette, etc.) is connected to Inputs 7/8 (or 9/10), the routing is as follows: When the A/B ASSIGN button is engaged and the MONO button is not engaged, INPUT 7 (or 9) is routed to the A Output, while INPUT 8 (or 10) is routed to the B Output. When both the A/B ASSIGN and MONO buttons are engaged, a mono mix of INPUTs 7/8 (or 9/10) will be routed to both the A and B Outputs. The AUX ASSIGN button is always a mono mix of the stereo channel. OUTPUT LEVELS After all of the Mic/Line and Stereo Input Levels have been adjusted and routed, adjust the OUTPUT faders so the Meters peak average around 0 to +2. SECURITY COVER The MLM 103 comes with an installed security cover for the EQ and ASSIGN switches only, leaving the LEVEL controls and metering exposed for regular operation. This feature is valuable when you want to protect those painstaking settings from casual operators. The cover is removed and replaced by two screws. If the security cover will not be used, remove the chrome standoffs from the front panel and replace with the black screws in these same locations. Security Cover ©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL (425)-355-6000 FAX (425)-347-7757 WEB http://www.rane.com Manual-4 104623 IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from the apparatus. 11. Only use attachments and accessories specified by Rane. 12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 15. The plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle. 16. This apparatus shall be connected to a mains socket outlet with a protective earthing connection. 17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building. 18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power amplifiers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus. 19. This apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support. WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the apparatus. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. CAUTION: Changes or modifications not expressly approved by Rane Corporation could void the user's authority to operate the equipment. This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. WARNING CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN To reduce the risk of electrical shock, do not open the unit. No user serviceable parts inside. Refer servicing to qualified service personnel. The symbols shown below are internationally accepted symbols that warn of potential hazards with electrical products. This symbol indicates that a dangerous voltage constituting a risk of electric shock is present within this unit. This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit.
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