Shure SCM810 User Manual

The Shure Model SCM810 is an automatic microphone mixer us-
ing Shure's patented Intellimix
tivates only those microphones being addressed, minimizing the
poor audio caused by multiple open microphones. The SCM810 is
an eight-channel mixer capable of being linked for installations as
large as 400 input channels. The single-rack-height chassis is ideal
for installations with limited rack space. The removable header-
type input and output connectors are quick, convenient, and elimi-
nate the time and expense of wiring XLR microphone connectors.
Each automatic input channel has a two-band equalizer. Equal-
ization is useful to reduce unwanted low-frequency audio pickup,
as well as to make different microphone types -– lavaliers, bound-
ary and handheld -– sound similar. Each input channel has three
associated logic terminals: Gate Out, Mute In, and Override In.
These connections provide for activation of external devices and
external microphone control, important for specialized installed
sound applications. Each mixer channel also has a
jack for use as a direct output, gated channel output, send/receive
insert point, or external speech gate for mixing consoles.
The SCM810 has numerous applications in sound reinforce-
ment, audio recording, and broadcast. In any speech pickup appli-
Reliable, quick-acting, noise-free microphone selection which
automatically adjusts to changes in background room noise
User-configurable parameters for automatic operation
Automatic gain adjustment as additional microphones are acti-
vated (NOMA: Number of Open Microphones Attenuator)
Last Mic Lock-On circuit maintains ambient sound
Adjustable EQ per channel: low-frequency rolloff and high-fre-
quency shelving
48 V phantom power selectable for each input
Active balanced microphone- and line-level inputs and line-level
output
Highly RF-resistant chassis and circuitry
Bi-color LED indication of channel activation and clipping
Unlike Shure's AMS system of dedicated microphones and mixers, the SCM810 is recommended for use with any
1995, Shure Brothers Inc.
27A8504 (OL)
AUTOMATIC MICROPHONE MIXER
DESCRIPTION
operational concept. Intellimix ac-
1
/ -inch phone
4
FEATURES
professional-quality low-impedance microphone or line-level signal.
Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.
Models SCM810 and SCM810E User Guide
cation where multiple microphones are required, the SCM810 dra-
matically improves audio quality. Automatic operation allows an
individual talker's voice to rise above background noise and rever-
beration to become clearer and more intelligible.
Each SCM810 handles up to eight microphone- or line-level sig-
nals and two aux-level signals. Any high quality, low-impedance,
balanced dynamic or condenser microphone (including wireless)
can be used. Additional SCM810 mixers (up to 50) can be intercon-
nected using the rear-panel link jacks. Non-automatic (manual) op-
eration is also available.
The SCM810 is supplied with:
Rack-mounting hardware
A link cable for linking SCM810 mixers
Removable block terminal connectors
The SCM810 is designed for 120 Vac operation and its line cord
contains a standard 3-pin grounded ac plug. The SCM810E is de-
signed for 230 Vac operation and its line cord contains a CEE 7/7
("Schuko") plug. An accessory rack panel adapter to convert the
removable block input and output connectors to XLR connectors,
and aux connectors to phono jacks is available as RKC800.
Linking capability for systems up to 400 microphones
Non-automatic aux-level inputs with level control
Front-panel headphones output with level control
Peak-responding output limiter with selectable thresholds and
LED indicator
Internal modification permits 120 V operation (SCM810) or 230 V
operation (SCM810E)
SCM810: Underwriters Laboratories Listed and Canadian Stan-
dards Association listed as Certified; SCM810E: Conforms to
European Union directives, eligible to bear CE marking; VDE
GS-Certified to EN 60 950; meets European Union EMC Immu-
nity Requirements (EN 50 082-1, 1992): RF radiated (IEC
801-3): meets Criterion A, ESD (IEC 801-2): meets Criterion B,
EFT (IEC 801-4): meets Criterion B
NOTE
Printed in U.S.A.