Any low-im- pedance dynamic or condenser microphone (including wireless) can be used with the SCM810/E. Multiple SCM810 mixers can be linked to other SCM810/E mixers, as well as to Shure Models FP410, SCM410, SCM800, and AMS8100 mixers.
(see DIP Switches section). LINK IN/OUT Jacks: Allow multiple mixers to be stacked for addi- tional inputs. Up to 50 SCM810 mixers can be linked. LINE OUTPUT Removable Block Connector: Active balanced line-level signal for connection to amplifiers, recorders or other mixers.
OFF (factory setting), +16 dBm, +8 dBm, or +4 dBm (see Internal Modifica- tions for other threshold settings). Link Global/Local: Determines whether each linked SCM810 output con- tains only its own program output, or that of all linked mixers (see Mixer Linking for more information).
48 V phantom power (center position), or line level (right switch position). 3. Connect the SCM810 Line Level Output to the input of mixers, EQs, amplifiers or recorders. 4. For headphones monitoring, connect headphones to the front-panel 1/4-inch PHONES jack.
USING AN EQUALIZER/FEEDBACK CONTROLLER WITH AN AUTOMATIC MIXER When setting up a sound system which has an outboard equalizer or feed- back controller in the signal chain, set the SCM810 to MANUAL. This acti- vates all microphone inputs, so every possible feedback path is open. With the SCM810 in MANUAL mode, equalize the sound system and/or “Ring...
NETWORKING MULTIPLE MIXERS If additional inputs are needed, more SCM810 mixers (as many as 50) can be “linked” using supplied link cables. Such a configuration can provide up to 400 microphone inputs. To link multiple mixers, connect the LINK OUT of the first mixer to the LINK IN of the next mixer, and so on (see 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 Ω, Line 150 Ω; termina- tions: Line 10 kΩ, Phones 300 Ω (tip-sleeve and ring-sleeve), Direct Out 10 kΩ;...
The SCM810's Advanced Functions are recommended only for those who are technically knowledgeable and familiar with audio LOGIC CONNECTION SPECIFICATIONS The logic functions of the SCM810 expand the mixer's range of installation and control options. Logic can be used for everything from simple cough switches to elaborate computer-controlled room systems.
SUGGESTED LOGIC APPLICATIONS This section contains suggestions on the uses of the SCM810's logic capa- bilities. Note that uses of these functions are not limited to the listed appli- cations. The user is limited only by individual imagination and creativity. For additional suggestions and solutions to installation problems, contact Shure's Applications Group.
SCM810. An existing sound system using 24-volt relays can be used with the SCM810 without modification if the relay coil current draw is under 500 mA. “Filibuster” Mode In normal operation, when several people talk, each microphone gates on LOGIC so that no speech is missed.
For information on logic gate use, refer to the TTL Cookbook and CMOS Cookbook, both by D. Lancaster, Howard Sams Publishing Co. VOLTAGE SELECTION The SCM810 can be internally modified to operate from 230 Vac, 50/60 Hz power. WARNING: Voltages in this equipment are hazardous to life.
WARNING: All modifications must be performed by qualified service tech- nicians. This section describes SCM810 modifications that can be made using sol- der “jumpers” on the printed circuit board; the pads where jumpers may be used are placed close together so that a single solder drop functions as a jumper.
SCM810 Speech Gate for Mixing Console The SCM810 can be used in conjunction with large mixing consoles to pro- vide automatic mixing for talk shows, panel discussions, and news shows. Large consoles have channel insert jacks so that external signal process- ing devices can be patched into individual channel signal paths.
3. Set the desired DIP switch(es) to the Up position. 4. Run the jumper wires to the desired remote location and solder them to an SPST toggle switch. The wires can exit the SCM810 chassis above the DIP switches. Shorting any wire to the Ground wire will set...