Changing Override in to Mute in Filibuster Mode

CHANGING OVERRIDE IN TO MUTE IN (FILIBUSTER MODE)

This modification should only be performed with the Change MUTE IN to Inhibit modification described above. This is only necessary if the Mute function is desired along with Filibuster Mode.

CHANGING THE OFF-ATTENUATION LEVEL

This procedure changes the off-attenuation level from -13 dB (as supplied). Refer to the following table for attenuation levels and resis- tor values.

Off-Attenuation Level	Resistor Value

10 dB	18 kΩ

13 dB	30 kΩ
(default)
20 dB	75 kΩ

30 dB	250 kΩ

∞ dB	open circuit

NOTE: As more Input channels are added to the system, the off-attenuation increases slightly.

GROUP GATING

With this modification, several channels can be grouped together so that all of them activate whenever one of them activates. This is useful for miking choirs.

SHORTING OVERRIDE IN TO LOGIC GROUND INTERNALLY

This modification is equivalent to shorting one of the channel OVER- RIDE IN to the LOGIC GROUND pin via the high density DB-15 logic con- nector. With this modification, a channel is always on.

SHORTING MUTE IN TO LOGIC GROUND INTERNALLY

This modification is equivalent to shorting a channel MUTE IN to the LOGIC GROUND pin via the high density DB-15 logic connector. With this modification, a channel is always muted.

DISABLING AUTOMATIC MIXING FUNCTION BY CHANNEL

This modification removes a given channel from the IntelliMix automat- ic mixing circuitry, so that a source such as music can be played through a channel of the SCM410 without affecting the automatic mixing of the un- modified channels.

MANUAL MODE ENABLE

This modification defeats the automatic mixing functionality of the SCM410, so that it operates as a standard 4 x 1 mixer.

Procedure:

1.Short jumper X1006.

2.Remove resistors R1087 and R1082.

Procedure:

1.Remove resistor R9178.

2.Install new resistor at jumper points R9177.

Procedure:

1.Locate pad PD1000.

2.Solder a wire from PD1000 to the other channels in the group. For example, to gate channels 1-3 as a group, solder a wire con- necting PD1000, PD2000, and PD3000.

Procedure:

1.Short jumper X1003.

Procedure:

1.Short jumper X1004.

Procedure:

1.If necessary, modify the channel input to accept line level sig- nals. Refer to the Inserting an Input Line Pad paragraph.

2.Modify the channel's Override In to On. Refer to the Shorting Override In to Logic Ground Internally paragraph.

3.Short jumper X1001 to remove the channel from the MaxBus.

4.Remove R1064 to remove the channel from the Last Mic Lock-On Bus.

Procedure:

1.Short jumper X9001.

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.