Shure SCM810 User manual

Shure Automatic Mixers feature our proprietary IntelliMix algorithm, the most effective
automatic mixing technology on the market. lntelliMix combines three key functions:
Noise-Adaptive Threshold, MaxBus, and Last Mic Lock-On.
Noise-Adaptive
Threshold prevents
false triggers by quickly
distinguishing between
constant background noise
(such as air conditioning)
and rapidly changing
sounds (such as speech)
for each channel input.
MaxBus delivers clear,
natural audio by turning on
only the best microphone
for each speaker.
Last Mic Lock-On
eliminates ambience
dropouts, ensuring that
there is always some
background ambience
present even if no one is
currently speaking.
In addition, the
NOMA (Number of Open
Microphones Attenuator)
ensures system stability
with no feedback
by automatically
maintaining a consistent
output level even as
additional microphones
are opened.
THEY’RE NOT JUST EASY. THEY’RE AUTOMATIC.
Shure SCM810 and SCM410 automatic mixers are the quickest, easiest, and most effective
way to set up a multiple-mic room. Without clipping a syllable, they silently activate only the
microphones being addressed and automatically adjust each microphone’s threshold to
changes in background noise.
It’s proven technology. Networkable, configurable, and as simple as opening the box,
plugging in, and
connecting the microphones.
There’s no need to buy specialized equipment, because both the SCM810 and SCM410 work
with all professional wired and wireless microphones. When you choose a Shure automatic
mixer, you get seamless automatic mixing right out of the box.
INTELLIMIX®CIRCUITRY:THE BRAINS OF THE OPERATION.
WHY YOU NEED AUTOMATIC MIXING.
•With too few open mics…some talkers sound
clear, while others seem far away.
•With too many open mics…there is a greater
likelihood of feedback and too much background
noise is added – making it hard for talkers to be
heard clearly. And oftentimes, a talker’s voice
will be picked up by more than one microphone,
resulting in poor audio quality.
Since it is difficult to select precisely the right
number of microphones for adequate coverage
with no overlap, the solution typically requires that
someone turn microphones up and down as
people speak. Not only does this demand fast
hands, it involves a great deal of guesswork.
Shure automatic mixers address these concerns
by opening mics as soon as they are needed and
attenuating them when they are not in use.

LOOKING FOR A
FULL SET OF FEATURES?
LOOK NO FURTHER.
In addition to the advanced technologies of
IntelliMix and NOMA, Shure Automatic Mixers
include a comprehensive set of features to
help you customize them to your specific
needs. Shared features of the
SCM810 and SCM410 include:
•Individual channel gain control
•Adjustable low cut and high
frequency shelving EQ filter
per channel
•Master output level control
•TTL logic control
•AMX and Crestron™compatibility
•Internal and external modifications to
accommodate almost any installation
need, including:
•Mute any channel in output bus
(for noise-inhibiting miking)
•Channel group gating
(for multi-channel choir miking)
•Change any direct output to insert
(send/return) point (for dynamics
processing such as AGC, DFR, PEQ)
FEATURES
SCM810 – 9 inputs, 9 outputs
•Eight balanced mic-line input channels
(Phoenix block connectors)
•One unbalanced 1/4¨ aux input level control
•Eight unbalanced 1/4¨ direct line level outputs
•One balanced master line/mic level output
(Phoenix block connector)
•Selectable 48V phantom power per channel
•Level selectable peak output limiter
•Full rack width (single-rack height)
SCM410 – 4 inputs, 2 outputs
•Four active balanced XLR mic level inputs
•One active balanced XLR mic/line
selectable output
•One unbalanced RCA aux level output
•12V phantom power
•+16 dBu peak output limiter
•Half-rack width (single-rack height)
TWO MIXERS.UNTOLD APPLICATIONS.
With the networking capability of both the SCM810
and the SCM410, you can connect the two mixers
together (in any combination up to 400 microphones)
to create the perfect setup for any size application.
Whether it’s sound reinforcement, audio recording or broadcast, you now have a customizable automatic
mixing solution for a variety of applications, including: Houses of Worship • Panel Discussions • Distance
Learning • Hotel Sound • Courtrooms • Boardrooms • Teleconferencing • Videoconferencing
Low Cut/High
Shelving EQ Filters
One of many House of Worship
Installation Possibilities:
Auditorium
•Channels 1-5: Spoken Word audio sources
•Channels 6-8: Vocal Mics.Logic override
used so channels are always on(see user’s
manual for instructions). Aux In is always
manually operated.
One of Many Audio for Distance
Learning Installation Possibilities:
Instructor’s Site
•Channel 1: Instructor via wireless
•Channels 2-14: Student mics
•Channel 15: Noise-inhibiting mic. Use any mic
to eliminate false gating from transient noise
sources (door slams, paper shuffling, etc.).
•Channel 16: Receive AEC reference audio.
Use IntelliMix to eliminate false gating from far-
end audio (see user’s manual for instructions).

AL1513B ©2012 Shure Incorporated.
FREQUENCY RESPONSE
(at 1 kHz, channel controls centered)
50 Hz to 20 kHz; +_2dB; -3 dB corner at 25 Hz
VOLTAGE GAIN
(typical, controls full clockwise)
INPUT CLIPPING LEVEL
SCM810: Mic: -15 dBV Line: +22 dBV
Aux: +22 dBV Send/Return: +18 dBV
SCM410: Mic: -14 dBV
OUTPUT CLIPPING LEVEL
SCM810: Line: +18 dBV Headphones: +12 dBV
Direct Out: +18 dBV Send/Return: +18 dBV
SCM410: Line: +24 dBV Mic: -18 dBV
Aux: +14 dBV
TOTAL HARMONIC DISTORTION
<0.1% at + 18 dBV output level, 50 Hz to 20 kHz (through 20 Hz - 20 kHz
filter; input 1 and master at 5, all other controls full counterclockwise)
COMMON MODE REJECTION
>70 dB at 1 kHz
POLARITY
SCM810: Mic/Line, Send inputs to all outputs are non-inverting;
Aux input to all outputs is inverting
SCM410: All inputs to all outputs are non-inverting
INPUT CHANNEL ACTIVATION
Attack Time: 4 ms
Hold Time: 0.4 s (switchable to 1.0 s – SCM810 only)
Decay Time: 0.5 s
OFF ATTENUATION
SCM810: 15 dB (switchable to ∞)
SCM410: 13 dB
EQUALIZATION
Low-frequency: 6 dB/octave cut, adjustable corner from 25 to 320 Hz
High-frequency: +_6 dB at 5 kHz, +_8 dB at 10 kHz, shelving
LIMITER
Type: Peak
Threshold: SCM810: switchable: off, +4, +8, +16 dBu output
SCM410: switchable: off and +16 dBu at output
PHANTOM POWER
SCM810: 48 Vdc open-circuit through 6.8 kΩseries resistance
SCM410: 12 Vdc open-circuit through 680 Ωseries resistance
OPERATING VOLTAGE
120 Vac, 60 Hz (SCM810 and SCM 410) or 230 Vac, 50 Hz
(SCM810E and SCM410E)
MICROPHONE LOGIC CONTROL PINS
External voltage supply required: 5 Vdc, 100 mA
Logic output current sinking ability: 500 mA
OVERALL DIMENSIONS
SCM810: 44.5 mm H x 483 mm W x 317 mm D (1 3/4 x 19 x 12 1/2 inches)
SCM410: 44.5 mm H x 219 mmW x 268 mm D(1 3/4 x 85/8 x 10 1/2 inches)
NET WEIGHTS
SCM810: 4.3 kg (9.9 lbs)
SCM410: 1.75 kg (3.86 lbs)
8
5
6
3
21
FRONT
1. SCM810 – microphone channel gain controls 1-8
SCM410 – microphone channel gain controls 1-4
2. Easy to view LEDs – light is green when channel is active and red at 6 dB below clipping
3. Adjustable EQ – can adjust to reduce low-frequency signals, and boost or cut
high-frequency signals
4. Auxiliary Control and Input – for mixing external devices such as CD players (SCM810 only)
5. Master Control – to set overall level
6. Output Level LED Meter – indicates peak output signal and limiter action
7. Headphone Control and Output provides monitoring of overall mixer output (SCM810 only)
8. Power LED – lights green when unit is on
BACK
9. 120 VAC Power Connector – can be internally changed to 230V Operation
10. Power On/Off Rocker Switch (SCM810 only)
11. Microphone Logic Connector – with mute, override and gate logic terminals for each channel
12. DIP Switch allows for different setup options
13. Link In/Out Jacks – allow linking of SCM410, SCM810, FP410, and AMS8100 mixers
14. Mic/Line Output for connection to amplifiers, recorders, or other mixers
(SCM410 modifiable for mic level, SCM810 is mic/line switchable)
15. Mic/Line SwitchableBlock Connectors for fast and secure microphone connections(SCM810 only)
16. Modifiable Direct Out/Insert 1/4¨ phone jacks on each channel (SCM810 only)
17. Recessed Switch to set mic/line input level and 48V phantom (SCM810 only)
18. Auxiliary Output – allows for use of consumer-level audio equipment (SCM410 only)
19. XLR Microphone Connectors for quick and easy microphone connections (SCM410 only)
SPECIFICATIONS (specifications for both mixers unless otherwise indicated)
912 11 18 14 13 19
FEATURES (numbers correspond to both unless otherwise indicated)
SCM410
SCM810
SCM810 OUTPUT
INPUT line headphones direct out
mic 80 dB 88 dB 34 dB
line 40 dB 48 dB -6 dB
aux 44 dB 52 dB none
send/return 20 dB 28 dB none
SCM410 line mic aux
mic 80 dB 40 dB 68 dB
BACK
BACK
FRONT
FRONT