Clear-Com SB704, RM704, MS-704 Datasheet

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.

www.clearcom.com

Features:

• 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

• “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

Clear-Com Encore

TM

MS-704, RM-704, SB-704 4-Channel Intercom Stations

RM-704

SB-704

MS-704

1. Headset Connector

XLR 4-pin male

2. Panel Mic Connector

Allows easy attachment of proprietary
9" or 18" gooseneck microphone

3. Mic on Switch/Indicator

Blue-color LED; button illuminates when
the microphone is active.

4. Mic Select Switch

Selects between the panel mounted
gooseneck mic and the headset mic.

5. Remote Mic Kill

Amber-color LED turns off the microphone
talk circuits of all Clear-Com beltpacks in
the system (MS-704 & SB-704).

6. Link Button

Amber-color LED; links channels B, C,
and/or D to Channel A.

7. All Talk Buton

Amber-color LED ; sends the station's mic
signal to all four channels.

8. Announce Button

Amber-color LED; directs station's mic
signal to dedicated rear-panel "announce"
output while activating associated relay

9. Call Button

Red-color LED; Activates all station
and beltpack call lights on the respective
intercom channel; also functions as
attention-getting “Call” lights.

10. Listen Button

Green-color LED; Turns on LISTEN
circuit on corresponding channel.

11. Talk Button

Blue-color LED (on), amber-color LED
(off); illuminated dual-action buttons light
up to indicate the on-off status of each
channel’s TALK circuit.

12. Volume Control

Adjusts the listening level for both speaker
and headset.

13. Speaker On/Off Switch

Selects or deselects the built-in speaker.

14. Loudspeaker

High-quality loudspeaker is driven by a
four-watt proaudio amplifier.

15. Short Indicators

Illuminates when a short is detected on
one or more of the lines while power will
be supplied to other channels.

16. Panel Mic Gain

Adjusts the sensitivity of the gooseneck
panel mic.

17.Sidetone Adjust

Controls the level of your voice as it is
heard in your own headset and speaker.

18. Program Interrupt Select (IFB)

Selects which channel the program
interrupt will operate.

19. Auto Call Select

Sends a call signal automatically when the
TALK button is depressed.

20. Auto Talk/Listen Select

Allows the TALK and LISTEN circuit to be
automatically activated when the TALK
button is depressed.

21. Latch Disable Select

TALK button is momentary function only.

22. Program Level

Adjusts the level of the Audio Program
feed to the station speaker.

23. Program Select

Determines which intercom channels the
audio program feed will be sent to.

Headset

Null PgmListen

Channel B

Null PgmListen

Channel A

Null PgmListen

Channel C

Null PgmListen

Channel D

BCDA

Line
Length

Program
Interrupt

BCD

Auto-Talk

/Listen

B

C

D

A

Talk Latch

Disable

B

C

D

A

HS

Lim

B

C

D

A

Auto-Call

On

Off

Talk

Listen

Call

Talk

Listen

Call

Talk

Listen

Call

Announce

All Talk

Link On

Mic Select

Panel

Headset

Mic On

Panel Mic

(On)

Off

(Dflt)

Panel Mic

Gain

Ch. B

Ch. A

Ch. C

Ch. D

Short

Long

(Short)

Program

On/Off

B

C

D

A

4-Channel4-Channel

Main StationMain Station

MS-704MS-704

Channel A

Channel B Channel C Channel D

Volume

Speaker

Sidetone

Adjust

Program

Level

Remote
Mic Kill

12 3 4 56789 1011 1312 14

15 16 17 18 19 20 21 22 23 24 25 26 27

24. Null Control

Used in conjunction with line/link switch to
minimize intercom channel crosstalk in station.

25. Listen Level Control

Adjusts the listen level for each intercom channel.

26. Program Adjust

Controls the level of program audio sent out to each
individual channel.

27. Line Length Select Dip Switch

Compensates for electrical capacitance on each
individual intercom channel to optimize null adjust.

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 Front Panel Features