DESCRIPTION

The Shure Model SCM810/E is an eight-channel automatic microphone mixer designed for use in sound reinforcement, audio recording, and broadcast applications. The SCM810 dramatically improves audio quality in any application where multiple microphones are required. 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.

SYSTEM FEATURES

Each input channel has a two-band equalizer and three logic terminals. The equalizer reduces unwanted low-frequency audio pickup and makes differ- ent microphone types-lavaliers, boundary and handheld-sound similar. The logic terminals can be used to control external devices.

The SCM810/E operates on 100-120 Vac power; the SCM810E operates on 220-240 Vac power. Each mixer is supplied with a power cord, rack-mounting hardware, and a link cable.

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Fast-acting, noise-free microphone selection that automatically

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Peak-responding output limiter with selectable thresholds and

 

adjusts to changes in background room noise

 

LED indicator

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Automatic gain adjustment as additional microphones are activat-

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Active balanced microphone-level XLR inputs and an active bal-

 

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anced Mic/Line level XLR output

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Last Mic Lock-On circuit that maintains ambient sound

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Aux-level input with manual level control

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Adjustable low-frequency rolloff and high-frequency shelving for

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Front-panel headphones output with level control

 

each channel

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Linking capability for up to 400 microphones

•Channel activation and clipping indicators

OPERATING PRINCIPLES

The operating concept behind the SCM810/E Automatic Mixer is Shure's patented* IntelliMix® circuitry. IntelliMix delivers seamless automatic mixing by combining three separate functions:

•Noise Adaptive Threshold. Distinguishes between constant background noise (such as air conditioning) and changing sound (such as speech) for each input channel. It continuously adjusts the activation threshold so that only speech levels louder than the background noise activate a channel.

•MaxBus. Controls the number of channels that may be activated for a single sound source. One talker activates only one channel, even if multiple microphones “hear” that talker.

•Last Mic Lock-On.Keeps the most recently activated micro- phone open until another microphone is activated. Without Last Mic Lock-On, a long pause in conversation would cause all micro- phones to turn off, which would sound as if the audio signal had been lost. Last Mic Lock-On ensures that background ambience is always present.

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Shure SCM810 manual Description, System Features, Operating Principles
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SCM810 specifications

The Shure SCM810 is a state-of-the-art automatic mixer designed for audio professionals seeking precision and reliability in various environments such as live events, broadcasting, and recording studios. This mixer is an integral part of speech reinforcement and meeting applications, providing seamless integration of multiple microphones while ensuring clarity and minimizing feedback.

One of the defining features of the SCM810 is its automatic mixing technology. It employs an advanced algorithm that intelligently manages microphone levels. Instead of manually adjusting levels for each microphone, the SCM810 automatically reduces the gain of inactive mics while boosting those in use. This results in improved sound quality and prevents unwanted noise interference, allowing for a professional audio experience.

The SCM810 supports up to eight microphones, making it versatile enough for panel discussions, roundtable meetings, or larger conferences. In addition to its mixing capabilities, the device boasts a unique "automatic gain control" system that maintains consistent audio levels regardless of the number of active microphones. This ensures that the audience receives a balanced sound across the room without sudden volume fluctuations.

Another notable characteristic of the SCM810 is its low noise operation. The mixer features high-quality preamps that reduce self-noise, providing clear audio reproduction. This is particularly important in environments where clarity is paramount, such as in broadcast applications. The device also includes individual channel gain controls, allowing audio engineers to fine-tune levels to suit specific needs.

In terms of connectivity, the SCM810 features balanced XLR inputs and outputs, ensuring compatibility with a wide range of professional audio equipment. Additionally, it is equipped with a built-in signal processing capability, including a 3-band EQ per channel, which allows for further customization of the audio signal.

Robust and reliable, the Shure SCM810 is built with durability in mind, making it suitable for both permanent installations and portable setups. Its intuitive front-panel controls simplify operation, ensuring that even less experienced users can achieve high-quality audio without extensive training.

In summary, the Shure SCM810 automatic mixer stands out in a crowded market with its advanced automatic mixing algorithms, low noise operation, versatile connectivity, and durable construction. It's an essential tool for anyone requiring dependable, high-fidelity audio control in diverse applications, helping to elevate the audio experience to a professional standard.
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