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Audio Frequency Response

20 Hz to 20 kHz (±1 dB)

Dynamic Range

20 Hz to 20 kHz, A-weighted, typical

Analog-to-Analog

110 dB

Analog-to-Dante, Dante-to-Analog

113 dB

Output Noise (mix output / direct output) 

20 Hz to 20 kHz, A-Weighted, one channel open

Output Pad

Line (-0dB)

Aux (-20dB)

Mic (-46dB)

−90 dBV

−110 dBV

−135 dBV

Equivalent Input Noise

20 Hz to 20 kHz, A-Weighted, input terminated with 150Ω, digital gain at +18 dB

Input Gain Setting

Line (+0dB)

Mic (+26dB)

Mic (+46dB)

−93 dBV

−118 dBV

−130 dBV

THD+N

1 kHz, +4 dBu out, mix output (MASTER) at +0 dB

<0.05%

Common Mode Rejection Ratio

150Ω balanced source, at 1kHz

>70 dB

Polarity

Non-inverting, any input to any output

Dimensions

44 mm x 483 mm x 289 mm (1.7 in. x 19.0 in. x 11.4 in.), H x W x D

Weight

5.5 kg (12.0 lbs)

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

Impedance

Clipping Level

Line (+0dB)

Mic (+26dB)

Mic (+46dB)

Active Balanced

5 kΩ

+20 dBV

−6 dBV

−26 dBV

Phantom Power

48 V DC, selectable per channel, 14 mA max.

Mic level settings only. Phantom power automatically switched off in LINE position.

Aux Input

Configuration

Impedance

Clipping Level

stereo, unbalanced

10 kΩ

+10 dBV

Mix Output

Configuration

Impedance

Max Output Level

Line (-0dB)

Aux (-20dB) Mic (-46dB)

Active Balanced

350 Ω

+20 dBV

0 dBV

−26 dBV

Direct Output

Configuration

Impedance

Max Output Level

Impedance Balanced

150 Ω

+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

From channel input to mix output, Estimated Nominal, ±0.1 ms

Single Device ( ms) 

In a Link Group ( ms) 

Analog to Analog

0.51

0.76 + 4T

N

Analog to Dante

0.29

0.54 + 4T

N

Dante to Analog

0.28 + T

N

0.53 + 5T

N

Dante to Dante

0.06 + T

N

0.31 + 5T

N

T

N

 = Network latency in milliseconds, as set in the device preferences page or Dante Controller. 

Note: Dante network latency is typically associated with the receiving device. 

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

Digital Feedback Reducer (DFR) Processing

Number of DFR Blocks

2

Number of Notch Filters

1 to 16 (default)

Notch Filter Bandwidth

High Q: 1/70th octave (Q=101)

Low Q: 1/40th octave (Q=58)

Notch Filter Depth

0 db to −18 dB in 0.5 dB increments

Networking

Network Interface

SCM820

Single Port, 10/100 Mbps Ethernet

SCM820-DAN

Dual Port, Gigabit Ethernet, Dante digital audio

Cable Requirements

Cat 5e or higher, shielded, 100 m maximum

Network Addressing Capability

DHCP, link-local, static

Specifications

Summary of Contents for SCM820-DAN

Page 1: ...USER GUIDE 27A20290 Rev 4 2017 Shure Incorporated SCM820 Digital IntelliMix Automatic Mixer...

Page 2: ...r s instructions 8 DO NOT install near any heat sources such as open flames radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not place any open flame source...

Page 3: ...de 11 Single or Dual Mixer Operation 11 Networking 12 Network Overview 12 Digital Audio Networking 12 Dante Software by Audinate 14 Dante Controller 14 Dante Virtual Soundcard 14 Application Examples...

Page 4: ...uting gain across channels to equal one open channel This mode incorporates IntelliMix operating principles into a gain sharing mixing style Extreme Extreme is an aggressive variation of Classic mode...

Page 5: ...Mix B or both for adjustment with the master knob and monitoring on the LED ring and headphone output Note When both Mix A and Mix B are selected the headphone output only monitors Mix A Mix Status In...

Page 6: ...nal path See Configuring the Inputs and Outputs for details on direct output routing Chassis Ground Screw 1 8 Provides an optional connection for microphone shield wire to chassis ground IntelliMix Se...

Page 7: ...B 9 18 24 36 48 60 0 gain limiter L R SUM gain low cut hi shelf meter push to solo hold to mute 1 2 3 4 5 6 7 8 A B HEADPHONE IntelliMix SCM820 AUX IN MASTER lockout power ethernet network audio autom...

Page 8: ...i i i i i i i i i i i gain low cut hi shelf ch meter iiii i i i i i i i i i i i i i i i i gain low cut hi shelf ch meter iiii i i i i i i i i i i i i i i i i iiii i i i i i i i i i i i i i i i i 320 H...

Page 9: ...UM gain low cut hi shelf meter push to solo hold to mute 1 2 3 4 5 6 7 8 A B HEADPHONE IntelliMix SCM820 AUX IN MASTER lockout power ethernet network audio automix link dual mixer LIM A B 9 18 24 36 4...

Page 10: ...ix link dual mixer LIM A B 9 18 24 36 48 60 0 gain limiter L R SUM gain low cut hi shelf meter push to solo hold to mute 1 2 3 4 5 6 7 8 A B HEADPHONE 4 5 OUT L R mix a mix b AUX IN 7 gate IN mute ovr...

Page 11: ...t the signal by 12 dB at 5 kHz with a slop of 12dB octave Direct and Mix Outputs Assign the Direct Outputs GUI Only Assign the Direct Output for each channel from the Output tab of the GUI Pre EQ Afte...

Page 12: ...ssic Shure SCM810 automixer in its default settings It is renowned for fast acting seamless channel gating and consistent perceived ambient sound levels The Classic mode excels in most applications sp...

Page 13: ...er operation by pressing the Dual Mixer button on the back panel or from GUI IntelliMix Tab Example Dual Mixer Applications Set Mix A to Classic mode for sound reinforcement and set Mix B to Smooth fo...

Page 14: ...rements To network SCM820 mixers ensure the setup meets the following requirements Use shielded Cat5e cables or higher Cable runs limited to 100 m 328 ft Devices are on the same subnet Dante Network I...

Page 15: ...60 0 gain limiter L R SUM gain low cut hi shelf meter push to solo hold to mute 1 2 3 4 5 6 7 8 A B HEADPHONE IntelliMix SCM820 AUX IN MASTER lockout power ethernet network audio automix link dual mi...

Page 16: ...ing guidelines Ensure the router has QoS enabled Latency settings are set to at least 1 ms Caution Do not form Link groups on a 100Mbps network as this will cause increased traffic and will exceed the...

Page 17: ...channels appear at the mixer s Mix Outputs Aux Channel The aux channel can be set to Local or Global from GUI Inputs Tab Local Aux keeps the Aux signal from appearing on the mix output of other networ...

Page 18: ...the chairperson s microphone activates all other microphones mute automatically Remote Channel Open Indicators Remote indicators can be used to indicate when a talker s microphone is on Connect the LE...

Page 19: ...nt the system still has insufficient gain before feedback other changes must be made to the sound system such as changing the placement of the microphones and or loudspeakers There are two basic ways...

Page 20: ...d held microphones In this situation feedback frequencies change drastically as the microphone user wanders the room or sound stage Both fixed and dynamic filters will automatically deepen as addition...

Page 21: ...s set the device password assign metering type and engage hardware lockout 2 Device List Displays the name of the mixer as set in the Preferences tab Click the drop down bar and select a device to ope...

Page 22: ...two indicators illuminate green when the channel is open to that mix bus Mix A or Mix B When set to Dual Mixer the A and B indicators function separately for each mix 9 Clip Indicator Illuminates when...

Page 23: ...Tab 6 Routing Routes the channel to the Mix A or Mix B output The routing options depend on the Mixer Type Single Mixer Type the channel can route to both or neither mixes Dual Mixer Type the channel...

Page 24: ...enuation Last Mic Lock On and NOMA are disabled in this setting 18 Off Attenuation Sets the amount of attenuation applied to closed channels This is disabled when the Gain Scaling is set to Adaptive 1...

Page 25: ...lect High Q default or Low Q from the drop down menu High Q 1 70th octave Q 101 Low Q 1 40 octave Q 58 10 New Filter Q This selection designates the width of each new filter as it is deployed by DFR 1...

Page 26: ...70 octave or 100 99Q to very wide 4 octaves or 0 27 Q Gain Sets boost or cut of the EQ setting from 18 to 18 dB 8 DFR Enable Disable Button When DFR is assigned from the DFR tab an enable disable butt...

Page 27: ...Auto Link enabled When a device is placed in a group it will automatically configure the unit to the group s settings 3 Stand Alone Devices List Displays all mixers that function independently of a l...

Page 28: ...der This is post limiter for the mix adjustments 9 IntelliMix Metering Changes the GUI Input meters to display IntelliMix attenuation applied in realtime as displayed with an orange meter Channels tha...

Page 29: ...rm 3 Select Apply to set the password Once a password is set any user can log on as a Guest to view the GUI without changing settings To clear a password and allow anyone full editing rights 1 Log on...

Page 30: ...he GUI 4 Language Sets the language of the GUI This setting is saved to the computer s cookies Event Log The event log provides a detailed account of mixer activity from the moment the mixer is powere...

Page 31: ...that five or less windows are open to the same GUI Disable software meters from GUI Preferences tab See Network section for properly setting up the network Network Audio and Link Groups Problem Indica...

Page 32: ...Error Messages An error message is generated on the Channel LED rings when operating or environmental conditions occur that could potentially harm the mixer These types of messages indicate the mixer...

Page 33: ...utput Level Impedance Balanced 150 20 dBV Headphone Output 6 35 mm 1 4 TRS 100 mW 350 dual mono will drive stereo phones Digital Signal Processing AD DA Converter 24 bit 48 kHz 113 dB dynamic range ty...

Page 34: ...n 5353 udp mDNS Required for device discovery Open 5568 udp SDT Required for inter device communication Open 8023 tcp Telnet Debug console interface Password 8180 tcp Flash Required for web GUI Open 8...

Page 35: ...tom dual mixer 0dB mic 30dB mic phm 48 VDC CH 46dB reset CHANNEL INTELLIMIX B CC B 0E DD AA 00 auto link gate IN Aux Out mute ovrd gnd L R L 1 14 25 13 R GATE OUT LOGIC GROUND MUTE IN OR OVERRIDE IN 1...

Page 36: ...ompleks Harco Mangga Dua Blok L No 35 Jakarta Pusat I 16 GSI31 00501 0211 Europe Middle East Africa Shure Europe GmbH Jakob Dieffenbacher Str 12 75031 Eppingen Germany Phone 49 7262 92490 Fax 49 7262...

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