Shure SCM820-DB25

Shure SCM820Specs
Analog Performance
Channel Input Level Monitoring
Configuration: Active Balanced
Impedance: 5 Kilohms

Clipping Level: Line (-0): +20 dBV, Mic (+26): -6 dBV, Mic (+46): -26 dBV

Phantom Power
48 VDC, Selectable per Channel, 14 mA Maximum
AUX Input
Configuration: Stereo, Unbalanced
Impedance: 10 Kilohms

Clipping Level: +10 dBV

Output Connectors (Analog)
Mix Output
Configuration: Active Balanced

Impedance: 350 Ohms

Clipping Level: Line (±0): +20 dBV, Aux (-20): 0 dBV, Mic (-46): -26 dBV

Output
Direct
Configuration: Impedance Balanced

Impedance: 150 Ohms

Max Output Level: +20 dBV

Headphone Output
1/4″ / 6.35 mm TRS, 100 mW, 350 Ohms, Dual Mono (Will Drive Stereo Phones)
Connector
DB25
Signal Processing
Converter
24-Bit, 48 kHz, 113 dB Dynamic Range Typical
Internal Processing
32-Bit
Latency
Analog to Analog
Single Device: 0.51 ms

In a Link Group: 0.76 + 4TN

Processing
Channel Input: Gain Adjustment Range: -110 to +18 dB
Low Cut: Corner: 25 Hz to 320 Hz, Slope: 12 dB/Octave
High Shelf: Corner: 5 kHz, Slope: 12 dB/Octave, Gain: -18 to +18 dB

Mix Output: Gain Adjustment Range: -110 to +18 dB
Low Shelf: Corner: 25 Hz to 20 kHz, Slope: 12 dB/Octave, Gain: -18 to +18 dB
High Shelf: Corner: 25 Hz to 20 kHz, Slope: 12 dB/Octave, Gain: -18 to +18 dB
6-Band PEQ: 25 Hz to 20 kHz, ±18 dB, Bandwidth: 1/70 to 4 Octaves
Limiter: Ratio: 10:1
Threshold: -50 to -2 dBFS
Attack: 0.1 ms
Decay: 100 ms
Networking
Network Interface
Single Port, 10/100 Mb/s Ethernet
Cable Requirements
Cat 5e or Higher, Shielded, 328′ / 100 m Maximum
Network Addressing Capability
DHCP, Link-Local, Static
General
Dynamic Range
Analog to Analog: 110 dB (20 Hz to 20 kHz, A-Weighed, Typical)
Output Noise
Output Pad
Line (+0): -90 dBV
Aux (-20): -110 dBV
Mic (-46): -135 dBV
At 20 Hz to 20 kHz, A-Weighted, One Channel Open
Equivalent Input Noise
Input Gain Setting
Line (+0): -93 dBV
Mic (+26): -118 dBV
Mic (+46): -130 dBV
At 20 Hz to 20 kHz, A-Weighted, Input Terminated with 150 Ohms, Digital Gain at +18 dB
THD + N
< 0.05% 1 kHz, +4 dBu Out, Mix Output (Master) at +0 dB Common Mode Rejection Ratio > 70 dB
150 Ohms Balanced Source, at 1 kHz
Polarity
Non-Inverting, Any Input to Any Output
Housing
Steel; Extruded Aluminum
Power Requirements
100 to 240 VAC, 50 to 60 Hz, 1 A
Operating Temperature Range
0 to 145°F / -18 to +63°C
Storage Temperature Range
-20 to +165°F / -29 to +74°C
Dimensions
1.7 x 19 x 11.4″ / 43.1 x 482.6 x 289.5 mm
Weight
12 lb / 5.4 kg
Packaging Info
Package Weight
11.6 lb
Box Dimensions (LxWxH)
22 x 14.8 x 2.6″

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
DB25 connector with 8 inputs
Per-channel direct outputs allow the mixer 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″ 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
Advanced Networking
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
Standard Ethernet networked audio configuration
Control system compatible (AMX, Crestron)

Key Features
Delivers Seamless Automatic Mixing
Reduces Background Noise
Noise Adaptive Threshold Adjustment
Enhanced I/O Support for Flexibility
Dual Mixer Outputs (A & B)
Aux Inputs for Integrating Media Players
Browser-Based Control Software
Digital Feedback Reduction
Includes USB Flash Drive
Hardware Kit, Ethernet Cable, Power Cord

The Shure SCM820-DB25 Digital IntelliMix Automatic Mixer is an 8-channel digital automatic mixer designed for use in speech applications, including sound reinforcement, broadcasting, and audio recording. It uses Intellimix technology to dramatically improve audio quality in any application where multiple microphones are required and to select channels to open to the mix bus, while attenuating other channels. It comes with a DB25 connector with 8 inputs. A hardware kit, Ethernet cable, power cord, and USB flash drive are also included.