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Rane MLM42S, Manual

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MLM42S

MIC & LINE MIXER

Data Sheet-4

All features & specifications subject to change without notice. 9-2015

©Rane Corporation  10802 47th Ave. W.,  Mukilteo WA 98275-5000 USA  TEL 425-355-6000  FAX 425-347-7757  WEB rane.com

Rear Panel

Architectural Specifications

The mixer shall be a high performance mic/line mixer featuring 

four balanced, studio-grade microphone inputs. XLR connectors 

shall be provided for mic-level input. TRS switching jacks shall 

be provided for line-level input. Use of the TRS jacks shall auto-

matically set the preamplifier gain structure for line-level input 

and defeat phantom power. Each of the four inputs shall feature 

input gain control, overload indicator, three-band Accelerated-

Slope™ equalizer and a Level control. The mixer shall have a 

post-mix effects loop with Wet/Dry pan control. A single master 

Level control shall control two unbalanced and two balanced 

outputs. Unbalanced output jacks shall be RCA type. Balanced 

outputs shall employ one XLR and one ¼" TRS jack. Each bal-

anced output shall provide an additional 6 dB of gain and deliver 

a minimum signal level of +24 dBu into a 10k ohm load. The 

balanced outputs shall be capable of operating at mic level with a 

maximum output of –16 dBu.

XLR inputs shall operate in mic mode with a gain range of 

+12 dB to +50 dB. Each microphone input shall operate with or 

without 15 volt phantom power. ¼" TRS inputs shall operate 

at line-level with a gain range of 0 to 12 dB. If the Line input is 

inserted, phantom power shall be defeated.

The unit shall be capable of operation by means of its own 

built-in universal power supply operating at 100-240 VAC and 

meet CE requirements. The unit shall be UL and cUL listed. The 

unit shall be entirely constructed from cold-rolled steel.

The unit shall be a Rane MLM42S Mic & Line Mixer.

Summary of Contents for MLM42S

Page 1: ...M42S MIC LINE MIXER CONTENTS in order of appearance Important Safety Instructions MLM42S Manual MLM42S Data Sheet Sound System Interconnection Schematics Warranty Declaration of Conformity 22350 2 2 2 2 2 ...

Page 2: ...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 i...

Page 3: ...courant alternatif AC et doit absolument rester accessible Pour déconnecter totalement l appareil du secteur débranchez le câble d alimentation de la prise secteur 16 Cet appareil doit être branché à une prise terre avec protection 17 Quand il est branché de manière permanente un disjoncteur tripolaire normalisé doit être incorporé dans l installation électrique de l immeuble 18 En cas de montage ...

Page 4: ......

Page 5: ...6 OFF 0 6 OFF 0 6 OFF 0 6 OFF 0 6 OFF 0 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 10 0 2 4 8 6 LOW HIGH MID LOW HIGH MID LOW HIGH MID LOW HIGH MID OUTPUT EFFECTS LEVEL LEVEL LEVEL LEVEL LEVEL OL OL OL OL OL DRY WET POWER 1 2 3 4 MLM42S MIC LINE MIXER If an Input Overload indicator lights this is your clue to turn down its GAIN trim on the rear of the unit The Output Overload indicator ...

Page 6: ...ing up the Input Overload indicator 4 EFFECTS DRY WET control adjusts the mix between the sum of the four Inputs DRY and the Effects Return jack WET When used with an external effects processor the DRY WET pan control adjusts how much processed versus unprocessed signal appears in the final output mix See the EFFECTS LOOP section on page Manual 4 for more uses 5 Output Overload indicator is locate...

Page 7: ...connects external effects processors or expands to other mixers See page Manual 4 5 TRS and XLR Balanced OUTPUT jacks are provided for convenience Both connectors may be used simulaneously 6 OUTPUT LINE MIC switch changes both balanced XLR and TRS Outputs to either LINE level or MIC level Many DJ mixers have microphone engage and talk over functions associated with the microphone inputs By connect...

Page 8: ...control how much processed verses unprocessed signal appears in the final output mix An alternative use for the EFFECTS loop is for Expand Out put and Expand Input For example if you wish to use two mix ers the SEND Output of the first mixer can drive the RETURN Input of the second mixer The relative mix level of mixer one versus mixer two is determined by the DRY WET pan control of the second mix...

Page 9: ...iews karaoke and live performances because it was cost prohibitive Now it s quite inexpensive to enhance your existing gear and expand the number of live mics for any gig The MLM42S is unique These mic preamps give you the studio grade quality you need Applications are everywhere The MLM42S is designed to fit into a variety of situations where cost is an issue and Rane qual ity is a must Live Soun...

Page 10: ...n frequencies Effects Loop Type Active unbalanced TS connector Input Impedance 30 1k min Ω 1 kHz Output Impedance 300 1 Ω 1 kHz Maximum Output 20 min dBu load 10 kΩ 1 kHz A B unbalanced outputs Type Active unbalanced Mono RCA connectors same as A B Output Impedance 300 1 Ω 1 kHz Maximum Output 20 min dBu load 10 kΩ 1 kHz Balanced Outputs Type Active balanced TRS and XLR connectors Output Imped Mic...

Page 11: ...TO 12 dB MIC GAIN 12 TO 56 dB LINE GAIN 0 TO 12 dB MIC GAIN 12 TO 56 dB LINE GAIN 0 TO 12 dB WET DRY PAN UNBALANCED OUTPUT BALANCED OUTPUT LINE MIC MIC MASTER LEVEL CH 1 LEVEL CH 2 LEVEL CH 3 LEVEL CH 4 LEVEL 3 BAND TONE CONTROL 3 BAND TONE CONTROL 3 BAND TONE CONTROL 3 BAND TONE CONTROL AUDIO PRECISION AMPL dBr vs AMPL dBr 40 35 30 25 20 15 10 5 0 5 10 G A I N FREQUENCY 20 100 1k 10k 20k L O W MI...

Page 12: ...Dry pan control A single master Level control shall control two unbalanced and two balanced outputs Unbalanced output jacks shall be RCA type Balanced outputs shall employ one XLR and one TRS jack Each bal anced output shall provide an additional 6 dB of gain and deliver a minimum signal level of 24 dBu into a 10k ohm load The balanced outputs shall be capable of operating at mic level with a maxi...

Page 13: ...connections Grounding and EMC practices Shields of connectors in audio equipment containing active circuitry Rane s policy is to accommodate rather than dictate However this document contains suggestions for external wiring changes that should ideally only be implemented by trained technical personnel Safety regulations require that all original grounding means provided from the factory be left in...

Page 14: ...rconnect is not compat ible with unbalanced The small physical nature and short cable runs of completely unbalanced systems home audio also contain these ground loop noise currents However the currents in unbalanced systems never get large enough to affect the audio to the point where it is a nuisance Mixing balanced and unbalanced equipment however is an entirely different story since balanced an...

Page 15: ...ACTICE RECOMMENDED PRACTICE OPTIONAL CASE 1 2 3 3 1 2 CHASSIS GROUND SIGNAL GROUND CHASSIS GROUND CHASSIS GROUND The Next Best Right Way To Do It The quickest quietest and most foolproof method to con nect balanced and unbalanced is to transformer isolate all unbalanced connections See Figure 2 Many manufacturers provide several tools for this task including Rane Consult your audio dealer to explo...

Page 16: ...rounded and therefore immune to ground loop hums and buzzes Ground lifts are simply another Band Aid to try in case of grounding problems It is true that an entire system of properly grounded equipment without ground lift switches is guaranteed yes guaranteed to be hum free The problem is most equipment is not both internally and externally AC system wise grounded properly Most units with ground l...

Page 17: ...o guarantee that a hum free intercon nect can be achieved nor is there a definite scheme that will assure noise free operation in all configurations References 1 Neil A Muncy Noise Susceptibility in Analog and Digi tal Signal Processing Systems presented at the 97th AES Convention of Audio Engineering Society in San Fran cisco CA Nov 1994 2 Grounding Shielding and Interconnections in Analog Digita...

Page 18: ... 20 24 24 19 18 17 B B B B A A A A A A FEMALE BALANCED XLR NOT A TRANSFORMER NOR A CROSS COUPLED OUTPUT STAGE FEMALE BALANCED XLR EITHER A TRANSFORMER OR A CROSS COUPLED OUTPUT STAGE BALANCED TRS NOT A TRANSFORMER NOR A CROSS COUPLED OUTPUT STAGE BALANCED TRS EITHER A TRANSFORMER OR A CROSS COUPLED OUTPUT STAGE FLOATING UNBALANCED TRS TIP RING SLEEVE SLEEVE IN UNIT NC OR 3 5 mm UNBALANCED TS TIP S...

Page 19: ... RED SHIELD RED SHIELD SHIELD RED RED BLACK N C N C N C RED BLACK RED SHIELD N C BLACK RED BLACK RED 3 NC 2 RED 1 SHIELD 2 RED 1 SHIELD 3 BLACK 2 RED 1 NC 3 BLACK 2 RED 1 NC 3 BLACK 2 RED 1 SHIELD SHIELD FEMALE FEMALE FEMALE RED SHIELD RED BLACK SHIELD SHIELD RED BLACK RED BLACK BLACK RED RED SHIELD RED SHIELD RED SHIELD RED SHIELD RED BLACK 2 CONDUCTOR SHIELDED CABLE 2 CONDUCTOR SHIELDED CABLE 2 ...

Page 20: ...D 3 BLACK 2 RED 1 SHIELD 3 BLACK 2 RED 1 SHIELD SHIELD BLACK SHIELD RED BLACK SHIELD RED BLACK RED SHIELD SHIELD BLACK RED SHIELD BLACK RED SHIELD BLACK RED SHIELD BLACK RED SHIELD BLACK RED SHIELD RED SHIELD RED SHIELD RED SHIELD RED BLACK RED N C N C BLACK RED BLACK RED BLACK RED RED SHIELD RED SHIELD RED SHIELD RED 24 S BLACK T RED CROSS COUPLED OUTPUT ONLY CONNECT BLACK TO SHIELD AT THIS END A...

Page 21: ......

Page 22: ...LR GND 2 1 3 J7 3pin FEM XLR GND 2 1 3 J3 3pin FEM XLR LINE 1 LINE 3 LINE 2 LINE 4 MIC 3 MIC 1 MIC 2 MIC 4 PHANTOM POWER R78 10 0k R79 10 0k R80 10 0k R81 10 0k R122 100k R128 4 42k 15 15 GND 15 GND 3 2 1 8 4 U5A 072 TONE 1 D14 MBRS140T3 D15 MBRS140T3 R82 10 0k R83 10 0k R84 10 0k R85 10 0k R123 100k R129 4 42k 15 GND 15 GND 3 2 1 8 4 U6A 072 TONE 3 D16 MBRS140T3 D17 MBRS140T3 R86 10 0k R87 10 0k ...

Page 23: ...078 GND GND C73 0 01 C74 0 01 C81 0 001 C82 0 001 C93 0 1 C94 0 1 C95 0 1 C96 0 1 C103 0 022 5 6 7 U15B 33078 R150 4 02k R151 4 02k GND 5 6 7 U16B 33078 GND 3 2 1 8 4 U15A 33078 GND R164 5 36k R165 5 36k R166 5 36k R167 5 36k R174 1 91k R175 1 91k R179 19 1k 8 3 2 1 4 U16A 33078 GND GND C75 0 01 C76 0 01 C83 0 001 C84 0 001 C97 0 1 C98 0 1 C99 0 1 C100 0 1 C104 0 022 15 C49 0 1 15 C50 0 1 MIC 1 MI...

Page 24: ... 0k D13 RED R127 100k R143 4 42k 15 15 GND 15 GND 3 2 1 8 4 U20A 072 MIX OL BAL OUT 5 4 6 R17B 20kB 5 4 6 R18B 20kB 5 4 6 R19B 20kB 5 4 6 R20B 20kB 5 4 6 R21B 20kB 15 15 C61 0 1 GND C62 0 1 C63 0 1 C64 0 1 C65 0 1 GND C66 0 1 C67 0 1 C68 0 1 5 6 7 U17B 33078 GND GND 5 4 6 R22B 20kB 15 15 15 3 2 1 S5A 2P2T 6 5 4 S5B 2P2T WET DRY C128 220pF R198 150 R199 150 5 6 7 U20B 072 IEC PWR H 3 G 2 N 1 J11 T ...

Page 25: ...9B 20kB UP 5 4 6 R10B 20kB UP 5 4 6 R14B 20kB UP 5 4 6 R15B 20kB UP 5 4 6 R16B 20kB UP 5 4 6 R5B 20kB 15S 15S C52 0 1 15S 15S C53 0 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J16 GNDS 15S 15S C126 0 1 GNDS C127 0 1 GNDS GNDS TONE 2 OUT TONE 2 OUT TONE 2 ML TONE 2 HL TONE 2 ML TONE 2 HL TONE 2 LL TONE 2 LL TONE 4 OUT TONE 4 ML TONE 4 HL TONE 4 LL TONE 4 OUT TONE 4 HL TO...

Page 26: ...FECTS IN MATERIAL OR WORKMANSHIP THE SPECIFIC PERIOD OF THIS LIMITED WARRANTY SHALL BE THAT WHICH IS DESCRIBED TO THE ORIGINAL RETAIL PURCHASER BY THE AUTHORIZED RANE DEALER OR DISTRIBUTOR AT THE TIME OF PURCHASE Rane Corporation does not however warrant its products against any and all defects 1 arising out of materials or workmanship not provided or furnished by Rane or 2 resulting from abnormal...

Page 27: ...Y IN THE USA If the product is being sent to Rane for repair please call the factory for a Return Authorization number We recommend advance notice be given to the repair facility to avoid possible needless shipment in case the problem can be solved over the phone UNAUTHORIZED SERVICE PERFORMED ON ANY RANE PRODUCT WILL VOID ITS EXISTING FACTORY WARRANTY FACTORY SERVICE If you wish your Rane product...

Page 28: ...ofessional electronic A V apparatus immunity EN50581 2012 Technical documentation for RoHS assessment of electronic products Additional Information Environment E2 CE mark first affixed in 2007 In order for the customer to maintain compliance with these regulations high quality shielded cable must be used for interconnection to other equipment No changes or modification of the equipment other than ...

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