User manual SHURE SCM-810

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S. A. TABLE OF CONTENTS DESCRIPTION . 7 USING AN EQUALIZER/FEEDBACK CONTROLLER WITH AN AUTOMATIC MIXER . DO NOT expose the apparatus to dripping and splashing. [. . . ] Here two SCM810s are set to Local, and the resulting sound distribution provides local sound reinforcement while avoiding feedback. This is a simple "mix-minus" setup. The third SCM810 is set to Global and feeds a tape recorder, At the same time, the automatic functions (Last Mic Lock-On, etc. ) remain common to all mixers. The following table summarizes the mixer settings. Mixer A B C Link Global/ Local Switch Local Local Global Audio Output Contains. . . A B A, B, C SCM810 "C" (GLOBAL) LINK SCM810 "A" (LOCAL) SCM810 "B" (LOCAL) RECORDER LOUDSPEAKER LINK CABLES Additional link cables are available as Shure Part No. Longer cables in a variety of lengths are available from Apple Computer as computer printer 8 connections; they are variously referred to by Apple as "shielded serial cable with two mini DIN-8 connectors, " and "Apple System Peripheral­8 Cable. " Á Á ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁ Á Á ÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁ Á ÁÁ Á Á Á Á ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á Á ÁÁÁ Á Á ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁ Á ÁÁ Á Á ÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁÁÁÁÁ ÁÁÁ ÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁ ÁÁ ÁÁ Á Á LOUDSPEAKER LINKED SMC810 MIXERS FIGURE 8 SPECIFICATIONS Measurement Conditions (unless otherwise specified): Line voltage 120 Vac, 60 Hz (SCM810) or 230 Vac, 50 Hz (SCM810E); full gain; 1 kHz, one channel activated; source impedances: Mic 150 , Line 150 ; terminations: Line 10 k, Phones 300 (tipsleeve and ring-sleeve), Direct Out 10 k; Auto mode, equalization controls adjusted for flat response Frequency Response (Ref 1 kHz, channel controls centered) 50 Hz to 20 kHz ±2 dB; -3 dB corner at 25 Hz Voltage Gain (typical, controls full clockwise) Output Input Low-impedance mic (150 ) Line Aux Send/Return Inputs Impedance Input Mic Line Aux Send/Return Outputs Impedance Output Line Headphones Direct Out Send/Return Designed for use with >600 8-200 , 60 recommended >2 k >2 k Actual (typical) 60 300 Output Clipping Level +18 dBV +12 dBV Designed for use with 19-600 Actual (typical) 1. 6 k 10 k 10 k 10 k Input Clipping Level -15 dBV +22 dBV +22 dBV +18 dBV Line 80 dB 40 dB 44 dB 20 dB Headphones 88 dB 48 dB 52 dB 28 dB Direct Out 34 dB ­6 dB -- -- Input Channel Activation Attack Time . 0. 4 s (switchable to 1. 0 s) Decay Time . 0. 5 s Off-Attenuation 15 dB (switchable to ) Overload and Shorting Protection Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to 3 V; Line and Monitor inputs by signals up to 20 V Equalization Low-frequency . 6 dB/octave cut, adjustable corner from 25 to 320 Hz High-frequency . ±6 dB at 5 kHz, ±8 dB at 10 kHz, shelving Limiter Type . Switchable: off, +4, +8, +16 (dBm at output) Attack Time . Lights red when limiting occurs Input LEDs Green on channel activation, red at 6 dB below clipping Phantom Power 46 Vdc open-circuit through 6. 8 k series resistance per DIN 45 596 Operating Voltage SCM810: 120 Vac rated nominal (see Voltage Selection for 230 Vac operation), 50/60 Hz, 200 mA SCM810E: 230 Vac rated nominal (see Voltage Selection for 120 Vac operation), 50/60 Hz, 100 mA Temperature Range Operating . 0° to 60° C (32° to 140° F ) Storage . -30° to 70° C (-20° to 165° F) Overall Dimensions 44. 5 mm H x 483 mm W x 317 mm D (13/4 x 19 x 121/2 inches) Net Weight 4. 3 kg (9 lb 9 oz) Certifications SCM810: Listed by Underwriters Laboratories, Inc. , listed as Certified by Canadian Standards Association; SCM810E: Conforms to European Union directives, eligible to bear CE marking; VDE GS-Certified to EN 60 950; meets European Union EMC Immunity Requirements (EN 50 082­1, 1992). 95A8580 Knob, Master & Phones (white) . 95A8889 *For systems requiring other mains connectors, obtain a power cord with an IEC 320 type mating connector for connection to the SCM810, and an appropriate plug on the other end for connection to the mains. The supplied cord uses Harmonized IEC Cordage with color coding as follows: Brown = Line, Blue = Neutral, Green/Yellow = Ground. 2 k 2 k 2 k 1 k 1 k +18 dBV +18 dBV Total Harmonic Distortion <0. 1% at +18 dBV output level, 50 Hz to 20 kHz (through 20 Hz-20 kHz filter; Input 1 and Master at 5, all other controls full counterclockwise) Hum and Noise Equivalent Input Noise . -125 dBV (150 source; through 400 Hz - 20 kHz filter) Equivalent Input Hum and Noise . -123 dBV (150 source; through 20 Hz - 20 kHz filter) Output Hum and Noise (through 20 Hz to 20 kHz filter; channel controls full counterclockwise)) Master full counterclockwise . -70 dBV Common Mode Rejection >70 dB at 1 kHz Polarity Mic/Line, Send inputs to all outputs are non-inverting; Aux input to all outputs is inverting 9 ADVANCED FUNCTIONS The SCM810's Advanced Functions are recommended only for those who are technically knowledgeable and familiar with audio electronics. LOGIC CONNECTION SPECIFICATIONS The logic functions of the SCM810 expand the mixer's range of installation and control options. [. . . ] Remove resistor R1046. Dead Zone on MUTE IN Defeat As supplied, MUTE IN is intended for use as a momentary cough button or privacy function (mute when necessary). However, if the MUTE IN is intended to be used so that the talker must unmute microphones to enable speech pickup (unmute when needed), this modification is needed. This removes the muted channel from the MaxBus which eliminates "dead zones. " A dead zone is an area in which a microphone picks up a talker through a muted microphone and other microphones do not activate for that talker. Procedure: Short jumper X115. Change MUTE IN to Inhibit As supplied, a channel will mute when its MUTE IN terminal is grounded. [. . . ]