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Shure SCM800 manual

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Table of contents for the manual

  • Page 1

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  • Page 2

    [...]

  • Page 3

    3 DESCRIPTION Th e Shure Model SCM800 is a full-featured, eight-channel mi- crophone mixer for sound reinforcement, general audio re- cording, and audio-visual systems. Any low-impedance, bal- anced dynamic or condenser microphone, including a wire- le ss microphone system, can be used with the SCM800 mixer . Each SCM800 accepts up to eight microph[...]

  • Page 4

    4 4 SCM800 REAR P ANEL INSERT + AUX IN INSERT IN LINK MIC/PHM/LINE LINK 1 2 3 4 5 6 SWITC H (SWITCH) AUX/INS/INS LINE OUTPUT OUT Ć + 7 8 120VAC 50/60 Hz 200mA 18 13 Ć + Ć + Ć Ć + Ć + Ć + + MIC/PHM/LINE SWITC H INSERT MIC/PHM/LINE SWITC H INSERT MIC/PHM/LINE SWITC H INSERT MIC/PHM/LINE SWITC H INSERT MIC/PHM/LINE SWITC H MIC/PHM/LINE SWITC H [...]

  • Page 5

    5 SYSTEM SETUP RACK MOUNTING THE SCM800/E T o mount an SCM800 or SCM800E in a standard 483 mm (19-inch) audio equipment rack so that the front panel faces ou t, as shown in Figure 4. Then secure secure the mixer to the rack with the four supplied Phillips head screws. RACK MOUNTING THE SCM800/E FIGURE 4 SCM800/E CONNECTIONS Refer to Figure 5 and pr[...]

  • Page 6

    6 6 LINKING MUL TIPLE SCM800 MIXERS Up to four SCM800 mixers can be “linked” using the supplied link cables If additional inputs are needed. Such a configura- tion can provide 32 mic inputs. Refer to Figure 6. When mul t iple SCM800 mixers are linked, all input signals ap- pear at all linked mixer outputs––there is no master-slave rela- tio[...]

  • Page 7

    7 BASIC MIXER OPERA TION 1. T urn on the Power switch. 2. Adjust each channel level so that its Overload LED flick- ers only during very loud speech or noise. 3. T urn unused channel controls full counterclockwise. 4. Adjust the Low-Cut and High-Frequency controls adja- cent to each Input Gain control until all microphones sound alike. 5. Adjust th[...]

  • Page 8

    8 8 SPECIFICA TIONS Measurement Conditions (unless otherwise specified): Line voltage 120 V ac, 60 Hz (SCM800) or 230 V ac, 50 Hz (SCM800E); full gain; 1 kHz. Source impedances: Mic 150 : , Line 150 : T erminations: L ine 10 k : , Phones 300 : tip-sleeve and ring- sleeve), Direct Out 10 k : Equalization controls adjusted for flat respon[...]

  • Page 9

    9 INTERNAL MODIFICA TIONS W ARNING: All modifications must be performed by quali- fie d service technicians. V oltages in this equipment are haz - ardous to life. No user-serviceable parts inside. Refer all servicing to qualified service personnel. The safety certifica- tions of the SCM800 do not apply when the operating volt- age is changed from t[...]

  • Page 10

    10 10 INSERTING A 15 dB MICROPHONE PREAMPLIFIER P A D Each channel’s microphone preamplifier gain can be reduced by 15 dB. This may be desirable with extremely high-output mi- crophones. Procedure: T o pad the gain of the MIC position 1. Remove surface mount resistor R1023. 2. Solder a 6 8 0 : resistor at jumper X1 12. For a greater gain reductio[...]

  • Page 11

    11 REMOTE VOLUME CONTROL OF CHANNELS The channel, aux, or master levels can be controlled remotely b y a dc voltage via an external VCA (V o lta ge Controlled Ampli- fi er ). An example of an external VCA is the ST -VCA1 from Ra- dio Design Labs (1–800–281–2683 or www .rdlnet.com). Procedure: For channel control: 1. Connect the tip of a 1/4-i[...]

  • Page 12

    SHURE Incorporated http://ww w.shure.com United States, Canada, Latin America, Caribbean: 5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A. Phone: 847-600-2000 U.S. Fax: 847-600-1212 Intl Fax: 847-600-6446 Europe, Middle East, Africa: Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7 131-721414 Asia, Pacific: Shure Asia Limited, Phone: 852-2893-42[...]