SUGGESTED LOGIC APPLICATIONS

This section contains suggestions on the uses of the SCM410's logic capabilities. Note that uses of these functions are not limited to the listed applications. The user is limited only by imagination and creativity. For ad- ditional suggestions and solutions to installation problems, contact the Shure Applications Department.

COUGH BUTTON

The talker can turn off his or her microphone during coughing or private conversations by installing an SPST pushbutton switch between the MUTE IN and Logic Ground pins for each channel to be modified (see Fig- ure 7). When a channel is muted, no audio is passed. (See Dead Zone on MUTE IN Defeat paragraph in the Internal Modifications section for more information on MUTE IN logic.)

LOGIC

GROUND

M3

M1

M2

COUGH BUTTONS

FIGURE 7

CHAIRPERSON-CONTROLLED MUTING

The chairperson can, by activating a switch, silence all other micro- phones and be heard without interruption. For operation in this mode,

REMOTE CHANNEL-ON INDICATORS

Remote indicators can be used to indicate when a talker's microphone is on. Connect the LEDs and a 5-volt supply to the GATE OUT pins (See Figure 9). To avoid switching clicks in the audio output, do not ground the power supply negative terminal in the audio system or rack ground.

IMPORTANT: If a single cable is used for the microphone audio signal and the LED dc power, separate shielded pairs must be used. Failure to carry the dc power on a shielded pair may result in audible clicking due to capacitive coupling between the dc power lines and microphone lines.

 

+ 5 V POWER

 

SUPPLY

4707,

4707 ,

1/4 W

1/4 W

 

LOGIC

 

GROUND

G 1

G 3

G 2

4707 , 1/4 W

REMOTE CHANNEL-ON INDICATORS

FIGURE 9

DISABLING THE GATING FUNCTION (BYPASS)

To keep certain microphones on at all times, wire the desired micro- phone channel's OVERRIDE IN pins together to the Logic Ground pin. The selected channels now function as they would in a non-automatic mixer (see Figure 10). To perform this modification internally on the mixer, refer to the Shorting Override In to Logic Ground Internally paragraph in the Internal Modifications section.

connect all the MUTE IN pins together except that of the chairperson's channel, and wire an SPST pushbutton or toggle switch between those MUTE IN and Logic Ground pins (see Figure 8).

An alternative to a switch is to connect the chairperson's GATE OUT to the MUTE IN of other channels. When the chairperson's microphone activates, all other microphones mute.

LOGIC

O1 O2 O3

LOGIC

GROUND

GROUND

GATING BYPASS

FIGURE 10

M2

M3

M4

CHAIRPERSON-CONTROLLED MUTING

FIGURE 8

11

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Shure SCM410E Suggested Logic Applications, Cough Button, CHAIRPERSON-CONTROLLED Muting, Remote CHANNEL-ON Indicators
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SCM410E, SCM410 specifications

The Shure SCM410 and SCM410E are state-of-the-art automatic microphone mixers designed to enhance audio performance in various professional environments. Known for their reliability and advanced features, these mixers are a popular choice for broadcasters, conferencing systems, and live event productions.

One of the key features of the SCM410 is its Automatic Gain Control (AGC) system, which intelligently adjusts the gain of connected microphones based on their audio levels. This ensures that the output remains consistent, making it ideal for situations where multiple speakers might share the microphone, such as panel discussions or meetings. The SCM410E variant further enhances this functionality with extended connectivity options, catering to more complex audio setups.

Both models incorporate Shure's exclusive IntelliMix technology. IntelliMix employs sophisticated algorithms to minimize interference and eliminate feedback, which is crucial for maintaining intelligibility in crowded sound environments. The mixers automatically manage the microphone levels, activating only those that are in use while suppressing those that are not, which not only enhances audio clarity but also helps in reducing background noise.

The SCM410 features four microphone inputs, allowing operators to connect multiple microphones simultaneously. Users can easily control each input's level, with individual gain adjustments and a master output level control. Additionally, LEDs provide visual feedback on the status of each microphone, indicating when they are active or inactive. The SCM410E goes a step further, offering additional mic input options and enhanced flexibility for integration into larger systems.

Durability is a hallmark of the SCM410 and SCM410E, as they are constructed with high-quality materials, designed to withstand the rigors of professional use. The intuitive interface makes them accessible for both novice users and seasoned sound engineers.

With a phantom power switch for condenser microphones, an easy-to-read, backlit display, and robust connectivity options, the SCM410 and SCM410E are versatile tools for any audio setup. Their ability to automatically mix and control audio levels in real-time ensures that users can deliver presentations, discussions, and performances with clarity and confidence. Whether it’s in a corporate boardroom or a live concert venue, these automatic microphone mixers deliver high-quality sound tailored to the needs of modern audio applications.
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