Clear-Com Encore TM MS-704, RM-704, SB-704 4-Channel Intercom Stations Features: MS-704 RM-704 • Four Independent Intercom Channels for ultimate flexibility • Microprocessor-Controlled Logic assures maximum communications power • Universal Voltage Power Supply for 100 - 240 VAC operation, with shortcircuit protection on each channel • Linking Control instantly links channels together in “super party line” • Separate Talk and Listen Buttons for each channel • Individual Listen Volume Controls for each channel SB-704 The 704 series is Clear-Com’s most advanced party-line intercom system. Each station is a four-channel intercom with superior audio and versatile channel access to provide unmatched communication flexibility. All front-panel controls are intuitive and easy to operate. The station’s front-panel buttons are programmable and can be customized for a wide variety of applications that will meet the demands of any stage, studio, or field producer. Separate volume controls for every channel ensure the perfect audio mix in the headset or on the integral speaker. The SB-704 includes a versatile switching matrix which allows up to ten different groups of stations to be assigned to any one of the four channels. The regulated power supply in the MS-704 and SB-704 provides power for the entire intercom system. SB-704 Main Station This station is similar to the MS-704 main station except the speaker is replaced by a 10 x 4 assignment matrix panel. The assignment matrix panel allows you to choose any intercom station or group of stations connected to the ten inputs of the matrix and assign them to any one of the four intercom channels. RM-704 Remote Station The RM-704 remote station is powered directly from the intercom line and requires no external AC power, allowing it to be placed anywhere regardless of available electrical mains. The RM-704 has all of the same functions as the MS-704, except that it has no power supply, circuit breaker, or linking function. • “All-Talk” Function permits instant communications to all four channels • Four Separate Program Inputs are electronically balanced • Three Interruptible IFB Channels make talent cueing easy • “Announce” Button with Relay for external paging • Visual “Call Signaling” alerts users when others want to speak to them • Wide-Range High-Output Speaker for optimum clarity in all acoustic environments • “Hot-Mic” Output allows easy connection to external IFBs • Adjustable Mic Proximity Compensation reduces acoustic feedback • Superior “Contoured” Audio insures excellent voice intelligibility under all noise conditions, including high-noise environments • LED buttons for talk, call, announce, link, all talk, and mic on • Remote Mic Kill switch turns off the microphone talk circuits www.clearcom.com Clear-Com Encore TM MS-704, RM-704, SB-704 4-Channel Intercom Stations MS-704 Front Panel Features 1 2 3 4 5 6 7 8 9 10 11 12 Channel B Channel A Channel C 13 14 Channel D Mic On Announce Panel Mic Listen Listen Listen All Talk Talk Talk Talk Link On Call Call Call Volume Panel Short Headset On Headset Mic Select Ch. A Ch. B Off Speaker Remote Mic Kill (Short) Off Ch. C Long (Dflt) Ch. D Sidetone Adjust Panel Mic Gain 15 16 17 (On) HS B C D A B C D A B C D A B C D Lim Program Interrupt Auto-Call Auto-Talk /Listen Talk Latch Disable 18 19 20 21 Program Level 22 A B C D Program On/Off 23 Null Listen Pgm Channel A 24 25 Null Listen Pgm Channel B Null Listen Pgm Channel C Null Listen Pgm Channel D 26 A B C D Line Length 4-Channel Main Station MS-704 27 2. Panel Mic Connector Allows easy attachment of proprietary 9" or 18" gooseneck microphone 12. Volume Control Adjusts the listening level for both speaker and headset. 24. Null Control Used in conjunction with line/link switch to minimize intercom channel crosstalk in station. 13. Speaker On/Off Switch Selects or deselects the built-in speaker. 25. Listen Level Control Adjusts the listen level for each intercom channel. 3. Mic on Switch/Indicator Blue-color LED; button illuminates when the microphone is active. 14. Loudspeaker High-quality loudspeaker is driven by a four-watt proaudio amplifier. 26. Program Adjust Controls the level of program audio sent out to each individual channel. 4. Mic Select Switch Selects between the panel mounted gooseneck mic and the headset mic. 15. Short Indicators Illuminates when a short is detected on one or more of the lines while power will be supplied to other channels. 27. Line Length Select Dip Switch Compensates for electrical capacitance on each individual intercom channel to optimize null adjust. 1. Headset Connector XLR 4-pin male 5. Remote Mic Kill Amber-color LED turns off the microphone 16. Panel Mic Gain Adjusts the sensitivity of the gooseneck talk circuits of all Clear-Com beltpacks in panel mic. the system (MS-704 & SB-704) . 6. Link Button Amber-color LED; links channels B, C, and/or D to Channel A. 17.Sidetone Adjust Controls the level of your voice as it is heard in your own headset and speaker. 7. All Talk Buton Amber-color LED ; sends the station's mic signal to all four channels. 18. Program Interrupt Select (IFB) Selects which channel the program interrupt will operate. 19. Auto Call Select 8. Announce Button Sends a call signal automatically when the Amber-color LED; directs station's mic signal to dedicated rear-panel "announce" TALK button is depressed. output while activating associated relay 20. Auto Talk/Listen Select Allows the TALK and LISTEN circuit to be 9. Call Button automatically activated when the TALK Red-color LED; Activates all station and beltpack call lights on the respective button is depressed. intercom channel; also functions as 21. Latch Disable Select attention-getting “Call” lights. TALK button is momentary function only. 10. Listen Button 22. Program Level Green-color LED; Turns on LISTEN Adjusts the level of the Audio Program circuit on corresponding channel. feed to the station speaker. 11. Talk Button 23. Program Select Blue-color LED (on), amber-color LED (off); illuminated dual-action buttons light Determines which intercom channels the audio program feed will be sent to. up to indicate the on-off status of each channel’s TALK circuit. Matrix Assignment Switch (SB-704 only - not shown) Assigns an intercom station to any one of the four channels or to an off or party-line position. Superior “Contoured” Audio Compatible with all Clear-Com party-line intercoms, the 704 series accepts a wide range of dynamic headsets, with a choice of headset connectors. Optional plug-in noise-cancelling gooseneck microphones are available in 9” and 18” lengths. Remote Mic Kill (RMK) The MS-704 is equipped with a global RMK button. It will turn off the microphone talk circuits of all Clear-Com beltpacks in the system, eliminating extraneous noise from the “open” headset microphones. www.clearcom.com Clear-Com Encore TM MS-704, RM-704, SB-704 4-Channel Intercom Stations MS-704 Rear Panel Features 28 Technical Specifications: 29 30 Channel A Term 29 30 Channel B Term WARNING: TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. Hot Mic/IFB 34 On On Off Off MS-704 32 On On Off Off Program In Auxiliary CAUTION: TO PREVENT ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER TO QUALIFIED SERVICE PERSONNEL. Channel C Channel D Announce Out Output: 30V, 1.2A Continuous, 2A Peak 33 31 28. Power Connector And Switch EIA power connector for 100 -240 VAC operation. 29. Intercom Connectors (See specifications) 30. Channel Termination Switches Provides individual termination for each intercom channel. 31. Announce Output (XLR-M 3-PIN) Line-level transformer-isolated audio output. 32. Program Input #1 (XLR-F 3-PIN) Electronically balanced line-level audio input that is sent to the station or selectively to the intercom channels. 33. Hot MIC/IFB Output Provides line-level audio output from mic at all times while on and provides feed to external IFB system. 34. Aux Connector (DB-25F) Provides 4 separate Program Inputs, announce Relay contacts, and a footswitch input. Redundant “Failsafe” Power Supply The 1.2-amp universal switching power supply is a 30-volt regulated supply with multiple short-circuit protection. It can sense the difference between a long-term short circuit and an instantaneous overload, allowing the intercom to continue to operate even when a station is plugged in, momentarily exceeding the capacity of the power supply. If a shutdown occurs from a shorted intercom cable, the power supply will recover under full load when the short is removed. “Easy Access” Sub Panel A removable front panel gives the operator easy access to the station’s configuration switches and trim pots. Clearly labeled and simple to adjust, these controls allow the station to be instantly configured for virtually any communications application. When configuration is complete, the front panel re-attaches, revealing only those controls useful for normal operation. Multiple Program Audio Sources The station accepts five separate program audio sources: four line-level balanced inputs and one assignable line level input. The assignable program input accepts a balanced signal and is designed for monitoring external audio in the headset or speaker. The four balanced program inputs can be used to create individual program feeds on the intercom channels. Three of these channels can be used for program interrupt. dBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMS Panel Microphone Input Input Type: Electret Input Impedance: >=2KΩ Mic Limiter Threshold: 0dBu ±3dB Mic Limiter Range (MS-704 & RM-704): >= 20dB Mic Limiter Range (SB-704): >= 15dB Headset Microphone Input Input Type: Dynamic Input Impedance: >= 1KΩ Mic Limiter Threshold: 0dBu ±3dB Mic Limiter Range (MS-704 & RM-704): >= 17dB Mic Limiter Range (SB-704): >= 15dB Program Line Input Maximum Level before Clipping: Input Impedance: >= 20dBu >= 5KΩ Headset Output Load Impedance: >= 8Ω Output Impedance: <= 25Ω Output Limiter Threshold: +5dBu ± 3dB Maximum Output Level before Distortion: >= 17dBu Speaker Output Load Impedance: Max Output Level before 1% Distortion: >= 4Ω 20dBu ± 2dBu Party Line Output Off Noise: Output Impedance: < -74dBu >10KΩ Party Line Input Crosstalk: Max level before Clipping: Sidetone Null Capability: < -60dB >= 12dBu > 25dB Stage Announce/Balanced Line Out Type: Balanced Output Impedance: >= 200Ω Load Impedance: >= 600Ω IFB/Hot Mic Type: Output Impedance: Load Impedance: U nbalanced 150Ω >= 600Ω Frequency Response Panel Mic - Party Line: Headset Mic - Party Line: Headset Mic - Line Out: Program Input - Party Line: Program Input - Headset Out: Program Input - Speaker Out: Party Line - Headset Out: Party Line - Speaker Out: 600 - 10KHz ± 3dB 200 - 12KHz ± 3dB 200 - 12KHz ± 3dB 100 - 17KHz ± 3dB 200 - 10KHz ± 3dB 300 - 10KHz ± 3dB 200 - 10KHz ± 3dB 300 - 10KHz ± 3dB www.clearcom.com Clear-Com Encore TM MS-704, RM-704, SB-704 4-Channel Intercom Stations Max Distortion Panel Mic - Party Line: Headset Mic - Party Line: Headset Mic - Line Out: Program Input - Party Line: Program Input - Headset Out: Program Input - Speaker Out: Party Line - Headset Out: Party Line - Speaker Out: <= 0.5% <= 0.5% <= 0.5% <= 0.2% <= 0.2% <= 0.5% <= 0.2% <= 0.5% Noise Panel Mic - Party Line: Headset Mic - Party Line: Headset Mic - Line Out: Program Input - Party Line: Program Input - Headset Out: Program Input - Speaker Out: Party Line - Headset Out: Party Line - Speaker Out: < -65dBu < -70dBu < -55dBu < -85dBu < -60dBu < -60dBu < -50dBu < -50dBu Max Gain Panel Mic - Party Line: >= 37dB Headset Mic - Party Line: 41dB ± 2dB Headset Mic - Hot Mic Out: 55dB ± 3dB Headset Mic - Announce Out: 55dB ± 3dB Program Input - Party Line: >= -16dB Program Input - Headset Out: >= 18dB Program Input - Speaker Out: >= 24dB Party Line - Headset Out: >= 34dB Party Line - Speaker Out: >= 40dB Min Gain Panel Mic - Party Line: <= 25dB Announce Out: Program: Hot Mic / IFB Interface Accessory: (1) XLR-3M (audio) (1) XLR-3F (1) 1/4 in. (0.64 cm) phone jack (1) DB-15F Rear Panel Connectors (SB-704) Switched Intercom: (10) XLR-3M (1 per channel) Intercom: (4) XLR-3M (1 per channel) Announce Out (1) XLR-3M (audio) Program In: (1) XLR-3F Hot Mic / IFB Interface: (1) 1/4 in. (0.64 cm) phone jack External Speaker: (1) 1/4 in. (0.64 cm) phone jack Accessory: (1) DB-15F AC Power: IEC 320 connector Rear Panel Controls (MS-704) (1) Power switch Rear Panel Controls (SB-704) (1) Power switch (4) Intercom On/Off Switches Front Panel Connectors Panel Mic: Headset: (1) 1/4 in. (0.64 cm) panel mounting jack (1) XLR-4M Front Panel Controls & Indicators (MS-704) (1) Panel / headset mic switch (1) Mic on button (1) All talk button (1) Announce button (1) Party line link button (4) Program ON-OFF-INTERRUPT DIP switches (1) Program level control (4) Listen adjust controls (4) Channel null adjust controls (4) Channel program feed adjust controls (4) Talk buttons (4) Call buttons (4) Listen buttons (1) RMK button (1) Speaker ON-OFF switch (1) Speaker volume control Station Capacity (MS-704 & SB-704) Up to 40 RS-601 beltpacks or 10 speaker stations or (4) Short LEDs (1) Panel mic gain control 12 headset stations distributed over all channels (1) Sidetone adjust control (1) Headset audio limiter DIP switch DC Power (RM-704) (3) Interrupt enable DIP switches Input Voltage Range: 20-30 VDC (4) Auto-call DIP switches Input Current (Idle): <=165 mA (4) Auto-talk/listen DIP switches Input Current (Max): <=195 mA (4) Talk latch disable DIP switches Rear Panel Connectors (MS-704) (4) Line length DIP switches Intercom: XLR-3M (2 per Front Panel Controls & Indicators (RM-704) channel) (1) Panel / headset mic switch Announce Out: XLR-3M (audio) (1) Mic on button Program: (1) XLR-3F (1) All talk button Hot Mic / IFB Interface: (1) 1/4 in. (0.64 cm) (1) Announce button phone jack (4) Program Accessory: (1) DB-15F ON-OFF-INTERRUPT DIP switches AC Power: IEC 320 connector (1) Program level control Rear Panel Connectors (RM-704) (4) Listen adjust controls Intercom: (4) XLR-3M (1 per (4) Channel null adjust controls channel) (4) XLR-3F (4) Channel program feed adjust controls (1 per channel) (4) Talk buttons Mains Power (MS-704 & SB-704) Input Voltage Range: 100 - 240 VAC Input Frequency Range: 50 - 60 Hz Input Power: <= 60 VAC Output Voltage: 30 VDC ± 0.5V Output Current per Channel (Continuous): 1.2 A Output Current per Channel (Peak): 2 A (Do not exceed the 1.2A rating for more than 2 seconds per 1 minute period) Short Circuit Recovery Time (1st short): <= 0.5 sec Short Circuit Recovery Time >= 20 shorts in 20sec): <= 20 sec (4) Call buttons (4) Listen buttons (1) Speaker ON-OFF switch (1) Speaker volume control (1) Panel mic gain control (1) Sidetone adjust control (1) Headset audio limiter DIP switch (3) Interrupt enable DIP switches (4) Auto-call DIP switches (4) Auto-talk/listen DIP switches (4) Talk latch disable DIP switches (4) Line length DIP switches Front Panel Controls & Indicators (SB-704) (1) Panel / headset mic switch (1) Mic on button (1) All talk button (1) Announce button (1) Party line link button (4) Program ON-OFF-INTERRUPT DIP switches (1) Program level control (4) Listen adjust controls (4) Channel null adjust controls (4) Channel program feed adjust controls (4) Talk buttons (4) Call buttons (4) Listen buttons (1) RMK button (1) Speaker ON-OFF switch (1) Speaker volume control (4) Short LEDs (1) Panel mic gain control (1) Sidetone adjust control (1) Headset audio limiter DIP switch (3) Interrupt enable DIP switches (4) Auto-call DIP switches (4) Auto-talk/listen DIP switches (4) Talk latch disable DIP switches (4) Line length DIP switches (10) Channel Assignment Slide switches Environmental 32 - 122˚F (0 - 50˚C) Dimensions 19 in. W x 3.5 in. H x 10.5 in. D (483 mm x 88 mm x 267 mm) Weight 10.86lbs. (4.94 kg) (MS-704) 10.07lbs. (4.58 kg) (RM-704) 10.93 lbs. (4.97 kg) (SB-704) Notice About Specifications While Clear-Com makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice. Performance specifications included in this manual are design-center specifications and are included for customer guidance and to facilitate system installation. Actual operating performance may vary. www.clearcom.com Americas and Asia-Pacific Headquarters California, United States Tel: +1.510.337.6600 Europe, Middle East and Africa Headquarters Cambridge, United Kingdom Tel: +44 1223 815000 China Office Beijing, P.R. China Tel: +86-10-65811360/65815577 © 2011. Clear-Com LLC. All rights reserved. ® Clear-Com, the Clear-Com logo, and Clear-Com Encore are registered trademarks of HM Electronics, Inc.
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