Shure SCM268 User Guide (English)
Contents
1. 1 e TABLE OF CONTENTS ENGLISH 225 oc beet sc ee Eur vinee edet oor eb thesia 7 CONNEGTIONS 22 Ze eei dra e de ee me bie ie a ele iue 9 INSTALLATION ei dass patte de eg r teda res Bae tle is d a ete EE 10 INTERNAL MODIFICATIONS oS Lda Na eR rrr 11 SPECIFICATIONSE SDR GS RR eee an Reg aie oad waded en dood anes aA sad 12 EAN 13 BRANGHEMENTS 15 MONTAGE eui Mesue LI MAIS Eoque na e cde A DEEST qm RUE e da 16 MODIFICATIONS INTERNES eS oS OI ER I TEE ES A GNI TE ARSE RE eaa 17 erg e 18 DEUTSCH SN 19 ANSCHL SSE c omaes zu Sane abt x et Be acp tale e bloc EE 21 MONTAGE Ee ESAMI Wr eat de tga aaah ERE REUS dal ea2. POWER SUPPLY AMPLIFIER u LINE OUT AUX OUT HSITONI ENGLISH INSTALLATION SUPPLIED HARDWARE 2 Attach the short rackmount brackets to the outsides of the com v Arubber feet Forstand alorieiinstallation bined units with eight 8 of the bracket screws 1 rackmount bracket long For half rack single unit instal lations H T 1 rackmount bracket short For half rack single or du e al mount installations 2 e 2straddle brackets For dual mount or fixed installations A ES 12 bracket screws 1 4 in 6 mm For securing the brackets to the chassis e 4rackmount screws 1 in 2 5 cm For mounting the unit in a rack 4 plastic washers For use with the supplied rackmount Screws 4wood screws 1 2 in 1 25 cm For fixed installations Cani 3 After attaching the brackets mount the unit in an equipment rack using the supplied rackmount screws and plastic washe
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5. 8 Nichtin der Nahe von Warmequellen wie Heizk rpern Raumheizungen 14 Alle Reparatur und Wartungsarbeiten von qualifiziertem Kundendienstpersonal Herden oder anderen Ger ten einschlie lich Verst rkern installieren die DURCHF HREN LASSEN Kundendienst ist erforderlich wenn das Ger t auf W rme erzeugen irgendwelche Weise besch digt wurde z B wenn das Netzkabel oder der 9 Die Schutzfunktion des Schukosteckers NICHT umgehen Bei Steckern f r die Netzstecker besch digt wurden wenn Fl ssigkeiten in das Ger t versch ttet wurden USA gibt es polarisierte Stecker bei denen ein Leiter breiter als der andere ist oder Fremdk rper hineinfielen wenn das Ger t Regen oder Feuchtigkeit ausgesetzt US Stecker mit Erdung verf gen ber einen dritten Schutzleiter Bei diesen war nicht normal funktioniert oder fallen gelassen wurde Steckerausf hrungen dient der breitere Leiter bzw der Schutzleiter Ihrer 15 Dieses Ger t vor Tropf und Spritzwasser SCH TZEN KEINE mit Wasser gef llten Sicherheit Wenn der mitgelieferte Stecker nicht in die Steckdose passt einen Gegenst nde wie zum Beispiel Vasen auf das Ger t STELLEN Elektriker mit dem Austauschen der veralteten Steckdose beauftragen 16 Der Netzstecker oder ein Ger tekuppler m ssen leicht betriebsbereit bleiben 10 VERHINDERN dass das Netzkabel gequetscht oder darauf getreten wird ins 17 Der Luftschall des Ger ts berschreitet 70 dB A nicht besondere im Bereich der Stecke
6. Model SCM268 User Guide MASTER e LJ ML 3 2 e e O R e OUTPUTLEVELMETE S 18 POWER e 0 6 12 d zm E X IN 4 E microphone D Four channel Microphone Mixer M langeur quatre canaux Mikrofonmischpult mit vier Kan len Mezclador de micr fonos de cuatro canales Mixer microfonico a quattro canali 4 2008 Shure Incorporated K C Printed in U S A 2708646 Rev DULL A UN UE IMPORTANT SAFETY INSTRUCTIONS 1 READ these instructions 12 USE only with a cart stand tripod bracket or table 2 KEEP these instructions specified by the manufacturer or sold with the 3 HEED all warnings apparatus When a cart is used use caution when 4 FOLLOW all instructions moving the cart apparatus combination to avoid 5 DO NOT use this apparatus near water injury from tip over 6 CLEAN ONLY with dry cloth SR A 7 DO NOT block any ventilation openings Install in accordance with the manu 13 UNPLUG this apparatus during lightning storms or when unused for long periods of facturer s instructions time x m Tia 8 DONOT install near any heat sources such as radiators heat registers stoves 14 REFER all servicing to qualified service personnel Servicing is required when the or other apparatus including amplifiers that produce heat apparatus has been damaged in any way Such as power supply cord or plug is dam
7. 9 DO NOT defeat the safety purpose of the polarized or grounding type plug A aged liquid has been spilled or objects have fallen into the apparatus the apparatus polarized plug has two blades with one wider than the other A grounding type has been exposed to rain or moisture does not operate normally or has been plug has two blades and a third grounding prong The wider blade or the third dropped prong are provided for your safety If the provided plug does not fit into your out 15 DO NOT expose the apparatus to dripping and splashing DO NOT put objects filled let consult an electrician for replacement of the obsolete outlet with liquids such as vases on the apparatus 10 PROTECT the power cord from being walked on or pinched particularly at plugs 16 The MAINS plug or an appliance coupler shall remain readily operable convenience receptacles and the point where they exit from the apparatus 17 The airborne noise of the apparatus does not exceed 70dB A 11 ONLY USE attachments accessories specified by the manufacturer 18 Apparatus with CLASS construction shall be connected to a MAINS socket outlet with a protective earthing connection 19 Toreduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 20 Do notattempt to modify this product Doing so could result in personal injury and or product failure This symbol indicates that dangerous voltage constituting a risk of electric shock
8. Vac SCM268 or 220 240 Vac SCM268E Output Connector MIC LINE OUT Transformer bal anced XLR output connector Switchable between line and microphone level Output Level Switch MIC LINE OUT Recessed switch changes the signal level of the XLR output connector In Microphone Level Out Line Level Auxiliary Output Connector AUX OUT Phono jack feeds consumer level audio equipment Not affected by MIC LINE switch Auxiliary Level Inputs AUX LEVEL INPUTS 1 4 Phono jacks connect to consumer level audio sources iary level input for the auxiliary channel Phantom Power Switch 12V PHANTOM Recessed switch turns on phantom power for microphone inputs 1 4 Microphone Level Inputs MIC LEVEL INPUTS Trans Auxiliary Input Channel AUX IN A dedicated auxil former balanced microphone level XLR inputs HSITONA ENGLISH GAIN CONTROL INPUT GAIN The gain control knobs 1 4 located on the front panel adjust the gain for both microphone and auxiliary level inputs of channels 1 4 see Figure 1 For example the channel 1 gain control is used for both the channel 1 microphone input MIC LEVEL INPUT 1 and the channel 1 auxiliary level input AUX LEVEL INPUT 1 The auxiliary gain control knob AUX IN af fects only the auxiliary input AUX IN OUTPUT GAIN The master output gain control knob MASTER adjusts gain to both the XLR balanced output MIC LINE LEVEL and the auxiliary level ou
9. 11 dB pad into the input gain stage of a selected channel 1 Twist together the leads from one side of a 15 resistor and a 0 1 uF capacitor 15 KQ 0 1 MF 2 Solderthe free ends of the resistor capacitor combination into the holes at the jumper position indicated by the following table and remove the corresponding surface mount resistor Channel Remove Insert Resistor Capacitor Resistor Combination at Jumper X17 X27 X47 X37 HSITONA SPECIFICATIONS Measurement Conditions unless otherwise specified Line voltage 120 Vac 60 Hz SCM268 or 230 Vac 50 Hz SCM268E full gain 1 kHz one channel activated source impedances Mic 150 Aux Level 150 terminations Line 600 Mic 600 Aux Out 10 12 V phantom power off ENGLISH Frequency Response Ref 1 kHz controls centered Microphone Inputs 150 Hz to 20 Khz 2 dB built in 80Hz low cut Auxiliary Inputs 20 Hz to 20 kHz 2 dB Low Cut Filter Microphone inputs only 3dB down at 80 Hz 6 dB octave Gain typical controls full clockwise Input Output Mic Line Aux Out Low impedance mic 38 dB 76 dB 65 dB 150 Q Aux Level 3 dB 40 dB 29 dB Inputs Input Impedance Designed for Actual Input use with typical Clipping Level Mic 19 600 Q 1 2 kQ 5 dBV Aux Level lt 2 kQ 21 gt 28 dBV Outputs Output Impedance Designed for Actual Output use with typical Clipping Level Mic low Z input
10. 852 2893 4055 Email info shure com hk Canada Latin America Caribbean Shure Incorporated 5800 West Touhy Avenue Niles IL 60714 4608 USA Phone 847 600 2000 Fax 847 600 6446 Email international shure com
11. arts 1 and 2 for residential E1 and light industrial E2 en vironments Replacement Parts Knob Master blue 95B8752 Knob Channel Gain white 95A8752 Line Power Cords SCM268 100 120 Vac US Canada 95A8762 SCM268E 220 240 Vac EU 95A8778 Fuse SCM268 5x20 mm 250V 80mA slow blow 80A730 Fuse SCM268E 5x20 mm 250V 40mA 51 80J258 Hardware Kit 90AF8100 Link Bars Bracket 53A8443 Single Mount 53A8484 Dual Mount Bracket 53B8484 Optional Accessories Line Power Cord 230 240 Vac UK 95A8713 SHURE www shure com United States Shure Incorporated 5800 West Touhy Avenue Niles IL 60714 4608 USA Phone 847 600 2000 Fax 847 600 1212 Email info shure com 2008 Shure Incorporated Europe Middle East Africa Shure Europe GmbH Wannenackestr 28 74078 Heilbronn Germany Phone 49 7131 72140 Fax 49 7131 721414 Email info shure de Asia Pacific Shure Asia Limited Unit 301 3rd Floor Citicorp Centre 18 Whitfield Road Causeway Bay Hong Kong Phone 852 2893 4290 Fax
12. care il prodotto Tale operazione pu causare infortuni e o il guasto del prodotto stesso Questo simbolo indica la presenza di alta tensione all interno Questo simbolo indica la presenza di istruzioni importanti per dell apparecchio che comporta il rischio di folgorazione l uso e la manutenzione nella documentazione in dotazione all apparecchio AVVERTENZA le tensioni all interno di questo apparecchio possono essere letali L apparecchio non contiene parti che possono essere riparate dall utente Per qualsiasi intervento rivolgetevi a personale di assistenza qualificato Le certificazioni di sicurezza non sono valide se si cambia la tensione di funzionamento rispetto al valore prefissato in fabbrica oe SS Ei N
13. does not matter Refer to the following table Channel Remove Resistor from Place 10uF to 33uF Capacitor in To select a particular corner frequency for the low cut filter remove the R18 R28 R38 or R48 resistor for a given channel as specified above Then in the corresponding pc board location X17 X27 X37 or X47 place a capacitor of the specified value polarity does not matter Refer to the following formula for selecting the correct capacitor value for the de sired corner frequency C 26 5 F where C value of capacitor in uF F corner frequency 3 bB for low cut filter in Hz 11 The following table lists the low cut frequency corners for some of the most common capacitor values Capacitor Value uF Low Cut Frequency Corner Hz PHANTOM POWER DISABLE To disable phantom power for a given microphone input remove the specified resistor as listed in the following table LINE PAD To insert a 50 dB line pad for a given microphone input remove the specified resistor and short the solder points at the specified pc board lo cations Refer to the following table Short Solder Points R12 R13 R15 X11 and X14 R22 R23 R25 X21 and X24 R32 R33 R35 X31 and X34 R42 R43 R45 X41 and X44 HOT MIC PAD Some condenser mics have a high output In order to avoid overdriv ing the input stage the user may need to set the input pot lower than de sired To fix this problem the user can place an
14. el switch does not affect the auxiliary output AUX OUT level Use the master gain control MASTER to adjust peak levels as indi cated by the LEDs The red LED illuminates when the output is 2 dB be low clipping GREEN Nominal RED Clip OUTPUT LEVEL METER Er NOVO SE 20 10 0 46 12 18 lt q Peak in dBu MIC LEVE ES OFF ID 4 3 ITOM Phantom Power Switch AUX LEVEL INPUTS AUX IN 3 1 OUTPUTS AUX OUT MIC LINE LEVEL AUX LEVEL INPUTS AUX IN 3 1 OUTPUTS LINE MIC Output Level Switch CONNECTIONS The following diagram illustrates a few of the many types of connec the channel 4 auxiliary level input AUX LEVEL INPUT 4 Connecting tions possible with the SCM268 Note that nothing is connected to the both auxiliary level and microphone level inputs to a single channel is not channel 4 microphone input MIC LEVEL INPUT 4 This is because recommended because the SCM268 would not be able to independently channel 4 is being used for the consumer level equipment connected to mix the two sources AUX IN CHANNEL 4 CHANNEL 3 CHANNEL2 CHANNEL 1 CONSUMER LEVEL CONSUMER LEVEL DYNAMIC CONDENSER MI DYNAMIC EQUIPMENT EQUIPMENT MICROPHONE CROPHONE MICROPHONE f ae Im Fr OO CD PLAYER OR DI AM FM RECEIVER OR or LI IT TAPE DECK
15. haleur don ou prise d alimentation endommag liquide renvers ou objet tomb l int rieur 9 NE PAS d t riorer la s curit de la fiche polaris e ou de la fiche de terre Une de l appareil exposition de l appareil la pluie ou l humidit appareil qui ne marche fiche polaris e comporte deux lames dont l une est plus large que l autre Une pas normalement ou que l on a fait tomber fiche de terre comporte deux lames et une troisieme broche de mise la terre 15 NE PAS exposer cet appareil aux gouttures et aux claboussements NE PAS poser La lame la plus large ou la troisi me broche assure la s curit de l utilisateur Si des objets contenant de l eau comme des vases sur l appareil la fiche fournie ne s adapte pas la prise lectrique demander un lectricien 16 La prise SECTEUR ou un adaptateur d alimentation doit toujours rester pr t e tre de remplacer la prise hors normes utilis e 10 PROT GER le cordon d alimentation afin que personne ne marche dessus et 17 Le bruit a rien de l appareil ne d passe pas 70 dB A que rien ne le pince en particulier au niveau des fiches des prises de courant 18 Lappareil de construction de CLASSE doit tre raccord une prise SECTEUR et du point de sortie de l appareil dot e d une protection par mise la terre 11 UTILISER UNIQUEMENT les accessoires sp cifi s par le fabricant 19 Pour r duire les risques d incendie ou de choc lectrique ne pas exposer ce
16. is present within this unit This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit A WARNING Voltages in this equipment are hazardous to life No user serviceable parts inside Refer all servicing to qualified service personnel The safety certifications do not apply when the operating voltage is changed from the factory setting CONSIGNES DE S CURIT IMPORTANTES 1 LIRE ces consignes 12 UTILISER uniquement avec un chariot un pied un tr pied 2 CONSERVER ces consignes un support ou une table sp cifi par le fabricant ou vendu 3 OBSERVER tous les avertissements avec l appareil Si un chariot est utilis d placer l ensemble a est SC t de l eau chariot appareil avec pr caution afin de ne pas le renverser 6 NETTOYER UNIQUEMENT avec un chiffon sec m EE 7 NE PAS obstruer les ouvertures de ventilation Installer en respectant les con 13 DEBRANCHER l appareil pendant les orages ou quand il ne sera pas utilis pendant Signes du fabricant longtemps 8 Ne pas installer proximit d une source de chaleur telle qu un radiateur une 14 CONFIER toute r paration du personnel qualifi Des r parations sont n cessaires bouche de chaleur un po le ou d autres appareils dont les amplificateurs pro si l appareil est endommag de quelque fa on que ce soit comme par exemple cor duisant de la c
17. nel It can function as a primary or add on mix er for sound reinforcement recording broadcast or audio visual presen tation systems With the supplied hardware the mixer s half rack chassis mounts se curely in single or dual rackmount installations For fixed installations the SCM2668 can be fastened on or below a shelf counter or tabletop Built in 12 volt phantom power Internal power transformer Built in low cut filter on microphone inputs below 80 Hz O 1 2 3 4 AUX IN MASTER O o o o o o o o o RO i 20 10 0 6 2 18 POWER O SHUR Ss SCMR68 microphone mixer S Gain Controls 1 4 Adjusts gain for microphone level inputs and auxiliary level inputs 1 4 Auxiliary Channel Gain Control AUX IN Adjusts the auxiliary channel input gain o Output Meter LED meter indicates peak output signal level REAR PANEL Master Gain Control MASTER Adjusts overall output level 5 Power Indicator POWER This LED illuminates when the unit is plugged in and receiving power NOTE The SCM268 does not have a power switch To turn the unit off unplug the power cord or use an external power strip with a switch However it can remain plugged in as it uses very little power when idle MIC LEVEL INPUTS Power Connector Accepts 100 120
18. o di danneggiamento di spina o cavo di alimentazione ver 9 modificate la spina polarizzata o con spinotto di protezione Una spina polar samento di liquido sull apparecchio o caduta di oggetti su di esso esposizione izzata dotata di due lame una pi ampia dell altra Una spina con spinotto dot dell apparecchio a pioggia o umidit funzionamento irregolare o caduta ata di due lame e di un terzo polo di messa a terra La lama pi ampia ed il terzo 15 NON esponetelo a sgocciolamenti o spruzzi NON appoggiate sull apparecchio polo hanno lo scopo di tutelare la vostra incolumit Se la spina in dotazione non si oggetti pieni di liquidi ad esempio vasi da fiori adatta alla presa di corrente rivolgetevi ad un elettricista per far eseguire le modi 16 La spina di alimentazione o un attacco per elettrodomestici devono essere sem fiche necessarie pre pronti per l uso 10 EVITATE di calpestare il cavo di alimentazione o di comprimerlo specie in cor 17 Il rumore aereo dell apparecchio non supera i 70dB A rispondenza di spine prese dEGOITONI Gu pnto di uscita dall apparecchio 8 L apparato con costruzione di CLASSE va collegato ad una presa elettrica dot 11 USATE ESCLUSIVAMENTE i dispositivi di collegamento e gli accessori specificati ata di messa a terra di protezione dal costruttore 19 Perridurre il rischio di incendio o folgorazione non esponete questo apparec chio alla pioggia o all umidit 20 Non tentate di modifi
19. r Netzsteckdosen und an der Austrittsstelle 18 Das Ger t mit Bauweise der KLASSE muss mit einem Schukostecker mit Schutzle vom Ger t en Be i 11 NUR das vom Hersteller angegebene Zubeh r und entsprechende iter Netzsteckdose eingesteckt werden Zusatzger te verwenden 19 Dieses Ger t darf nicht Regen oder Feuchtigkeit ausgesetzt werden um das Risiko von Br nden oder Stromschl gen zu verringern 20 Nicht versuchen dieses Produkt zu modifizieren Ansonsten k nnte es zu Verlet zungen und oder zum Produktausfall kommen Dieses Symbol zeigt an dass gef hrliche Spannungswerte Dieses Symbol zeigt an dass das diesem Ger t beiliegende die ein Stromschlagrisiko darstellen innerhalb dieses Handbuch wichtige Betriebs und Wartungsanweisungen enth lt Ger ts auftreten ACHTUNG Die in diesem Ger t auftretenden Spannungen sind lebensgef hrlich Das Ger t enth lt keine Teile die vom Benutzer gewartet werden k nnen Alle Reparatur und Wartungsarbeiten von qualifiziertem Kundendienstpersonal durchf hren lassen Die Sicherheitszulas sungen gelten nicht mehr wenn die Werkseinstellung der Betriebsspannung ge ndert wird INSTRUCCIONES IMPORTANTES DE SEGURIDAD 1 LEA estas instrucciones 12 UTILICESE nicamente con un carro pedestal tripode 2 CONSERVE estas instrucciones escuadra o mesa del tipo especificado por el fabricante o ven 3 PRESTE ATENCION a toda
20. rables por el usuario Toda reparaci n debe ser llevada a cabo por t cnicos calificados Las certificaciones de seguridad no tienen vigencia cuando el voltaje de funcionamiento de la unidad es cambiado a un valor distinto al ajustado en f brica ISTRUZIONI IMPORTANTI PER LA SICUREZZA EGGETE queste istruzioni 12 CONSERVATE queste istruzioni OSSERVATE tutte le avvertenze SEGUITE tutte le istruzioni NON usate questo apparecchio vicino all acqua PULITE l apparecchio SOLO con un panno asciutto NON ostruite alcuna apertura per l aria di raffreddamento Installate l apparec chio seguendo le istruzioni del costruttore 8 NON installate l apparecchio accanto a fonti di calore quali radiatori aperture per l efflusso di aria calda forni o altri apparecchi amplificatori inclusi che gen USATE l apparecchio solo con carrelli sostegni treppiedi staffe o tavoli specificati dal costruttore o venduti insieme all apparecchio stesso Se usate un carrello fate attenzione durante gli spostamenti per evitare infortuni causati da un eventuale ribaltamento del carrello stesso 13 SCOLLEGATE l apparecchio dalla presa di corrente in caso di temporali o di non uti lizzo per un lungo periodo 14 RIVOLGETEVI a personale di assistenza qualificato per qualsiasi intervento nec essario intervenire sull apparecchio ogniqualvolta sia stato danneggiato in qualsiasi calore modo ad esempio in cas
21. reros sobre el aparato seguridad Si el tomacorriente no es del tipo apropiado para el enchufe con 16 Elenchufe de alimentaci n principal o acoplador de aparato electrodom stico deber sulte a un electricista para que sustituya el tomacorriente de estilo anticuado permanecer en condiciones de funcionamiento 10 PROTEJA el cable el ctrico para evitar que personas lo pisen o estrujen par 17 Elnivel de ruido transmitido por el aire del aparato no excede de 70 dB A ticularmente en sus enchufes en los tomacorrientes y en el punto en el cual 18 Los aparatos de fabricaci n CLASE deber n conectarse a un tomacorriente DE sale del aparato ALIMENTACI N con clavija de puesta a tierra protectora 19 Para reducir el riesgo de causar un incendio o sacudidas el ctricas no exponga este aparato a la lluvia ni a humedad 20 No intente modificar este producto Hacerlo podr a causar lesiones personales vi o la falla del producto 11 UTILICE nicamente los accesorios especificados por el fabricante d SEN Este s mbolo indica que la literatura que acompafia a esta Este s mbolo indica que la unidad contiene niveles de voltaje A re unidad contiene instrucciones importantes de funcionamiento peligrosos que representan un riesgo de choques el ctricos SA y mantenimiento ADVERTENCIA Los voltajes presentes en este equipo representan un riesgo para la vida No contiene componentes repa
22. rs Bracket Screw STAND ALONE INSTALLATION Wood Screw Adhere the four 4 supplied rubber feet to the bottom of the unit at each corner This will keep it from sliding and protect the table surface Rackmount Screw RACKMOUNT INSTALLATION The SCM268 can be mounted as a single unit or dual mounted with ei ther another SCM268 or another Shure half rack unit such as the SCM262 or DFR11EQ Attach the rackmount brackets using one of the ned id e following methods Single unit half rack installation 1 Attach the short and long rackmount brackets to the SCM268 FIXED INSTALLATION with eight 8 of the supplied bracket screws To permanently affix the SCM262 above or below a table shelf or 1 T counter top use the following steps 1 4 AN 1 Fasten the straddle brackets to the recessed edges of the chassis i 1 A 7 using four 4 bracket screws md f pe Top mount Fasten the straddle brackets to on the bottom of the i unit 1 H Hanging mount Fasten the straddle brackets to the top of the unit 1 A 2 Fasten the straddle brackets to the surface using the four 4 sup plied wood screws Dual mounted installation 1 Connectthe two units together side b
23. s 0 29 21 dBV Line 2600 Q 729 18 dBV Aux Out 22kQ 870 Q 7 dBV Total Harmonic Distortion lt 0 25 at 4 dBu output level through 22 Hz 22 kHz filter Input 1 and Master centered all other controls full counter clockwise Equivalent Input Hum and Noise 150 Q source through 22 Hz 22 kHz filter 124 dBV Output Hum and Noise through 22 Hz 22 kHz filter chan nel controls full counterclockwise Master full counterclockwise 92 dBV Master full clockwise 70 dBV Common Mode Rejection gt 80 dB at 1 kHz 12 Polarity All inputs to all outputs are non inverting Overload and Shorting Protection Shorting outputs even for prolonged periods causes no damage Microphone inputs are not damaged by signals up to 10 dBV Auxiliary inputs by signals up to 36 dBV Phantom Power 12 Vdc open circuit through 340Q series resistance Operating Voltage SCM268 100 120 Vac rated nominal 50 60 Hz 60 mA SCM268E 220 240 Vac rated nominal 50 60 Hz 30 mA Temperature Range Operating 7 to 49 20 to 120 Storage 29 to 74 C 20 to 165 F Overall Dimensions 44 mm H x 218 mm W x 162 mm D 1 72 x 8 60 x 6 37 inches Net Weight 1 20 Kg 2 Ibs 10 oz Certifications SCM268 UL amp cUL Listed by Underwriters Laboratories Inc SCM268E Eligible to bear CE Marking Conforms to Euro pean EMC Directive 89 336 EEC Meets applicable tests and performance criteria in European Standard EN55103 1996 p
24. s las advertencias dido con el aparato Si se usa un carro el mismo debe mov RSA odas erse con sumo cuidado para evitar que se vuelque con el utilice este aparato cerca del agua aparato 6 LIMPIESE UNICAMENTE con un trapo seco mer TA 7 NO obstruya ninguna de las aberturas de ventilaci n Inst lese lo 13 DESENCHUFE el aparato durante las tormentas el ctricas o si no va a ser utilizado indicado en las instrucciones del fabricante por un lapso prolongado p 8 No instale el aparato cerca de fuentes de calor tales como radiadores registros 14 TODA reparaci n debe ser llevada a cabo por t cnicos calificados El aparato de calefacci n estufas u otros aparatos incluyendo amplificadores que requiere reparaci n si ha sufrido cualquier tipo de dafio incluyendo los dafios al produzcan calor cord n o enchufe el ctrico si se derrama l quido sobre el aparato o si caen objetos 9 NO anule la funci n de seguridad del enchufe polarizado o con clavija de en su interior si ha sido expuesto a la lluvia o la humedad si no funciona de modo puesta a tierra Un enchufe polarizado tiene dos patas una m s ancha que la normal o si se ha ca do otra Un enchufe con puesta a tierra tiene dos patas y una tercera clavija con 15 NO exponga este aparato a chorros o salpicaduras de l quidos NO coloque objetos puesta a tierra La pata m s ancha o la tercera clavija se proporciona para su llenos con l quido tales como flo
25. sad 22 INTERNE MODIFIKATIONEN ureta regi RR RI RI I re m rr 23 TECHNISCHE DATEN e LATE 24 ESPANDE luana 25 CONEXIONES oliena dEr aer Make EA ed se a 27 INSTALACION Li ft ic RU ee xe e ee eR eae ues aci uale dtes 28 MODIFICACIONES INTERNA S hh rre 29 ESPECIFICACIONES OS 30 ITALIANO I AN N D Mir LA Us cene ad 31 COLLEGAMENTI er a ate EE nu oi ee dus 33 INSTALLAZIONE ii pipi i ER 34 MODIFICHE INTERNE Tia manaa elia iaia Ale a nad 35 DATETEGNICI de date nas RR aa En dtd Gals aad RE e E 36 EE OSE PS AI OA EEE RSI ORA ee KE 37 ESE er any a POTE ORSO OTTO IRPINO 39 rito he 40 PUGLIE ER ORRORE EIZO SPESE 41 URLO ce c CE ROERO C Etc E 42 SHURE SCM268 DESCRIPTION The Shure Model SCM268 is a transformer balanced four channel mi crophone mixer Its simple compact design delivers superior perfor mance and exceptional sound quality with low noise and a flat frequency response Versatile in all types of applications the SCM268 integrates transform er balanced XLR inputs a switchable microphone line level transform er balanced XLR output phono jack inputs and output phantom power FEATURES Four transformer balanced microphone inputs Transformer balanced output switchable mic line level Five 10 dB line level inputs Six segment LED output level meter FRONT PANEL and an auxiliary input chan
26. t appareil la pluie ou l humidit 20 Ne pas essayer de modifier ce produit Une telle op ration est susceptible d entrainer des blessures ou la d faillance du produit Ce symbole indique la pr sence d une tension dangereuse dans l appareil constituant un risque de choc lectrique Ce symbole indique que la documentation fournie avec l appareil contient des instructions d utilisation et d entretien importantes AN AVERTISSEMENT Les tensions l int rieur de cet quipement peuvent tre mortelles Aucune pi ce interne r parable par l utilisateur Confier toute r paration du per sonnel qualifi Les certifications de s curit sont invalid es lorsque le r glage de tension d usine est chang WICHTIGE SICHERHEITSHINWEISE 1 Diese Hinweise LESEN 12 NUR in Verbindung mit einem vom Hersteller angegebenen oder mit 2 Diese Hinweise AUFHEBEN dem Ger t verkauften Transportwagen Stand Stativ Tr ger oder 3 Alle Warnhinweise BEACHTEN Tisch verwenden Wenn ein Transportwagen verwendet wird beim de x Alle Anweisungen BEFOLGEN Verschieben der Transportwagen Ger te Einheit vorsichtig vorgehen 7 NUR i verwenden um Verletzungen durch Umkippen zu verh ten 7 KEINE L ftungs ffnungen verdecken Gem den Anweisungen des Herstell 13 Das Netzkabel dieses Gerats wahrend Gewittern oder bei langeren Stillstandszeiten ers einbauen aus der Steckdose ABZIEHEN
27. tput AUX LEVEL Auxiliary Channel Channel 3 MASTER O OUTPUT LEVEL METER n o OO O0 000 O 20 10 0 2 POWER 2 renes dr D n A SUORE CM268 microphone mixer Channel 2 Channel 4 Master Output GAIN CONTROL FIGURE 1 OUTPUT LEVEL METER The six LEDs on the front panel labeled OUTPUT LEVEL METER illu minate to reflect the peak level of the mixed output signal from the SCM268 in reference to balanced line output in dBu 0 dBu 0 775 V PHANTOM POWER When the phantom power switch on the back panel is on 12V PHAN TOM ON the SCM268 provides 12 V of phantom power to each XLR mi crophone input The switch is recessed to prevent accidental engagement Most condenser microphones require phantom power Use it when connecting these types of microphones to the SCM268 NOTE Phantom power does not affect the operation of balanced dynamic microphones With phantom power on they can be connected to the SCM268 in combination with condenser microphones that do use it OUTPUT LEVEL SWITCH The output level switch on the back panel MIC LINE OUT sets the level of the balanced XLR output When set to MIC it reduces the output by about 50 dB Set the switch so that the output level matches the input level of the device to which you are connecting the SCM268 The switch is recessed to prevent accidental engagement NOTE The output lev
28. y side using two 2 straddle brackets The brackets should straddle the recessed edges on on the top and bottom of each chassis Fasten them using eight 8 bracket screws NOTE Be sure to use both straddle brackets one on the top and one on the bottom HANGING MOUNT 10 INTERNAL MODIFICATIONS WARNING Voltages in this equipment are hazardous to life No user serviceable parts inside Refer all servicing to qualified service personnel DISASSEMBLY To access the printed circuit board pc board for internal modifica tions use the following steps 1 Unplug the power cord 2 Remove the knobs and retainer nuts from the front panel See Figure 2 KNOB ASSEMBLY FIGURE 2 3 Remove the four screws at each corner of the back panel Remove the two screws at each bottom corner of the front panel 5 Slide the back panel and pc board out from the rear of the chas sis gt CAUTION When reassembling the SCM268 DO NOT OVERTIGHTEN the knob retainer nuts Use a minimal amount of force to secure the nut 0 6 0 8 N m 5 7 in Ib Damage to the internal components will result if too much force is used LOW CUT FILTER To bypass the built in low cut filter for a given channel remove the specified resistor and place a 10uF to 33uF capacitor in the specified pc board location polarity
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