Shure SCM820 8-Channel Digital IntelliMix Automatic Mixer

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Shure SCM820-DB25 8-Channel Digital IntelliMix Automatic Mixer (Discontinued)

Description

Details

The SCM820 uses IntelliMix technology to dramatically improve audio quality when many channels of microphones need to operate simultaneously. Multiple I/O configurations and networking options ensure analog and digital connectivity between devices. It is designed for use in speech applications, including sound reinforcement, broadcasting and audio recording. The Shure SCM820-DB25 provides networking capabilities, comprehensive software control, AMX and Crestron compatibility, and analog / digital connectivity between devices. It offers IntelliMix® technology and digital feedback reduction. It also features 8 active-balanced microphone or line-level inputs and 8 dedicated, impedance-balanced direct outputs.

Features

Features

IntelliMix Technology:

Delivers seamless automatic mixing and reduced background noise through dynamic channel gating and attenuation
NAT (Noise Adaptive Threshold) continuously adjusts the activation threshold for opening a channel
Number of Open Microphones Attenuation (NOMA) determines the amount of gain attenuation for a mix output when the number of active microphones changes
Last Mic Lock-On (LMLO) keeps the most recently activated microphone open until another microphone is activated
MaxBus ensures that only one channel is opened per sound source, reducing comb filtering for clear and intelligible speech
IntelliMix Modes offer five different mixer mode presets of reliable automixing styles (Classic, Smooth, Extreme, Custom, or Manual) to quickly tailor the mix for a particular application

Enhanced I/O Support for Greater application Flexibility and Digital Connectivity:

DB25 connectors with 8 inputs
Per-channel direct outputs allow the SCM820 to be used as an insert processor
Mix A and B outputs with selectable mic or line level connect to a sound reinforcement system, mixing console, or recording device
Dual mixer operation enables routing of independent automixes to the mix A and B outputs, allowing two entirely different mixes to result from the same set of inputs
Aux inputs on both the front and back panel easily connect to media players
1/4" (6.35 mm) stereo headphone output for channel solo and mix monitoring

Comprehensive Control:

Channel control knobs allow quick adjustment of gain, limiter, and EQ settings, and solo/mute functions on input channels
Output mix controls and meters enable front-panel master gain and limiter control as well as signal monitoring
LED meter rings display input audio or IntelliMix gain levels for each channel
Browser-based control software delivers comprehensive software control, monitoring, routing, and configuration of all signals and settings and adds a parametric 8-band EQ

Specification

Dynamic Range	Analog-to-Analog: 110 dB; Analog-to-Dante, Dante-to-Analog: 113 dB
Output Noise	Output Pad Line (+0): -90 dBV; Aux (-20): -110 dBV; Mic (-46): -135 dBV
Equivalent Input Noise	Input Gain Setting Line (+0): -93 dBV; Mic (+26): -118 dBV; Mic (+46): -130 dBV
THD+N 1 kHz, +4 dBu out, mix output (MASTER) at +0 dB	<0.05%
Common Mode Rejection Ratio 150Ω balanced source	>70 dB
Polarity	Non-inverting, any input to any output
Housing	Steel; Extruded aluminum
Power Requirements	100 to 240 V AC, 50-60 Hz, 1 A
Operating Temperature Range	−18°C (0°F) to 63°C (145°F)
Storage Temperature Range	−29°C (-20°F) to 74°C (165°F)
Analog Connections
Channel Input	Configuration: Active Balanced; Impedance: 5 kΩ
Channel Input	Clipping Level: Line (-0): +20 dBV; Mic (+26): −6 dBV; Mic (+46): −26 dBV
Phantom Power	48 V DC, selectable per channel, 14 mA max.
Aux Input	Configuration: Stereo, Unbalanced; Impedance: 10 kΩ; Clipping Level: +10 dBV
Mix Output	Configuration: Active Balanced; Impedance: 350 Ω
Mix Output	Clipping Level:Line (±0): +20 dBV; Aux (−20): 0 dBV; Mic (−46): −26 dBV
Direct Output	Configuration: Impedance Balanced; Impedance: 150 Ω; Max Output Level: +20 dBV
Headphone Output	6.35 mm (1/4”) TRS, 100 mW, 350 Ω, dual mono (will drive stereo phones)
Digital Signal Processing
AD/DA Converter	24-bit, 48 kHz, 113 dB dynamic range typical
Internal Processing	32-bit
Latency(Single Device (ms))
Analog to Analog	.51
Analog to Dante	.29
Dante to Analog	0.28 + TN
Dante to Dante	0.06 + Tn
Latency (In a Link Group (ms))
Analog to Analog	0.76 + 4TN
Analog to Dante	0.54 + 4TN
Dante to Analog	0.53 + 5TN
Dante to Dante	0.31 + 5TN
Channel Input Processing
Gain Adjustment Range	−110 dB to +18 dB
Low Cut	Corner: 25 Hz to 320 Hz; Slope: 12dB/octave
High Shelf	Corner: 5 kHz; Slope: 12dB/octave; Gain: −18 dB to +18 dB
Mix Output Processing
Gain Adjustment Range	−110 dB to +18 dB
Low Shelf	Corner: 25 Hz to 20 kHz; Slope: 12dB/octave; Gain: −18 dB to +18 dB
High Shelf	Corner: 25 Hz to 20 kHz; Slope: 12dB/octave; Gain: −18 dB to +18 dB
6-Band PEQ	25 Hz to 20 kHz, ±18 dB; Bandwidth: 1/70 to 4 octaves
Limiter	Ratio: 10:1; Threshold: −50dBFS to −2dBFS; Attack: 0.1 ms; Decay: 100 ms
Dimensions (H x W x D)	1.7" (44 mm) x 19" (483 mm) x 11.4" (289 mm)
Weight	12 lbs (5.5 kg)

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