Shure SCM800E, SCM800 User Manual

SCM800/SCM800E Microphone Mixer

SCM800/SCM800E EIGHT-CHANNEL MICROPHONE MIXER

Specification Sheet

SYSTEM OVERVIEW

The Shure Model SCM800 is a full-featured, eight-channel micro­phone mixer for sound reinforcement, general audio recording, and
audio-visual systems. Any low-impedance, balanced dynamic or con­denser microphone, including a wireless microphone system, can be
used with the SCM800 mixer.

Each SCM800 accepts up to eight microphone- or line-level inputs
and one aux-level input (two input jacks feed the same channel). Up
to four SCM800 mixers can be linked to provide up to 32 input chan­nels. Each input channel has a two-band equalizer, switchable micro­phone- or line-level operation, switchable 48 V phantom power, and a

1

/4-inch send/receive insert jack.

The SCM800 operates on 120 Vac power; the SCM800E operates
230 Vac power. Both models are supplied with rack-mounting hard­ware, link cable and removable block terminal connectors. An acces­sory rack panel adapter (Model RKC800, available separately)
converts the removable block input and output connectors to XLR
connectors, and the Aux connectors to phono jacks.

FEATURES

• Compatible with Shure SCM810 and FP410 automatic mi­crophone mixers

• Adjustable EQ per channel: low-frequency rolloff and
high-frequency 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

• LED indication of channel clipping

• Linking capability for systems up to 32 microphones

• Two Aux-level input jacks that feed one channel

• Insert jack on each channel

• Manual mixing of input channels

• Front-panel headphones output with level control

• Peak-responding output limiter with selectable thresholds
and LED indicator

TL1030 (Rev. 3)
©2009 Shure Incorporated

SCM800/SCM800E MICROPHONE MIXER SPECIFICATION SHEET

SPECIFICATIONS

Measurement Conditions (unless otherwise specified):

Line voltage 120 Vac, 60 Hz (SCM800) or 230 Vac, 50 Hz
(SCM800E); full gain; 1 kHz.

Source impedances: Mic 150 , Line 150 
Terminations: Line 10 k, Phones 300  tip-sleeve and
ring-sleeve), Direct Out 10 k

Equalization controls adjusted for flat response, Channel 1 gain
control full clockwise, other gain controls full counterclockwise

Frequency Response (Ref .1 kHz, channel controls centered)

50 Hz to 20 kHz 2 dB; -3 dB corner at 25 Hz

Voltage Gain (typical, controls full clockwise)

Output

Input Line Headphones Direct Out

Low-impedance mic

(150 )

Line 40 dB 48 dB –6 dB

Aux 44 dB 52 dB -

Send/Return 20 dB 28 dB -

Inputs

Input

Mic 19-600  10 k –15 dBV

Line

Aux

Send/Return

Outputs

Output

Line >600  60  +18 dBV

Headphones 8-200 ,

Direct Out >2 k 1 k +18 dBV

Send/Return >2 k 1 k +18 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)

Hum and Noise

Equivalent Input Noise: –125 dBV (150  source; through 400
Hz—20 kHz filter)

Equivalent Input Hum and Noise: (150  source; through 20
Hz—20 kHz filter)

–123 dBV

Output Hum and Noise (through 20 Hz—20 kHz filter; channel
controls full counterclockwise):

Master full counterclockwise: -90 dBV
Master full clockwise: -62 dBV

80 dB 88 dB 34 dB

Impedance

Designed for

use with

2 k

2 k

2 k

Impedance

Designed for

use with

60 

recommended



Actual

(typical)

10 k +22 dBV

10 k +22 dBV

10 k +18 dBV

Actual

(typical)

300  +12 dBV

Input

Clipping Level

Output

Clipping Level

Common Mode Rejection

>70 dB at 1 kHz

Polarity

Mic/Line, Send inputs to all outputs are non-inverting; Aux input
to all outputs is inverting

Overload and Shorting Protection

Shorting outputs, even for prolonged periods, causes no dam­age. Microphone inputs are not damaged by signals up to 3 V;
Line and Monitor inputs by signals up to 20 V

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: Switchable: off, +4, +8, +16 (dBm at output)
Attack Time: 2 ms
Recovery Time: 300 ms
Indicator: Lights red when limiting occurs

Input LEDs

Light at 6 dB below clipping

Phantom Power

46 Vdc open-circuit through 6.8 k

 series resistance per DIN 45

596

Operating Voltage

SCM800: 120 Vac rated nominal (see Voltage Selection for 230
Vac operation), 50/60 Hz, 200 mA
SCM800E: 230 Vac rated nominal (see Voltage Selection for
120 Vac operation), 50/60 Hz, 100 mA

Temperature Range

Operating: 0
Storage: -30

Overall Dimensions

44.5 mm H x 483 mm W x 317 mm D (1

 to 60 C (32 to 140 F )
 to 70 C (-22 to 158 F)

3

/4 x 19 x 121/2 in.)

Net Weight

4.3 kg (9 lb 9 oz)

Certifications

SCM800: UL LISTED (U.S.) and cUL Certified (Canada)
SCM800E: Conforms to European Union directives; eligible to
bear CE marking.

REPLACEMENT PARTS

Knob, Channel Gain & Phones (white) ........................ 95A8238

Knob, Master (blue) ..................................................... 95B8238

Line (Power) Cord (SCM800) .....................................95B8389*

Line (Power) Cord (SCM800E) ...................................95C8247*

Link Cable.................................................................... 95B8889

Three -Terminal Block Connector ................................ 95B8580

SHURE Incorporated http://www.shure.com
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5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: [phone] U.S. Fax: [phone] Intl Fax: [phone]
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Shure Europe GmbH, Phone: [phone] Fax: [phone]
Asia, Pacific:
Shure Asia Limited, Phone: [phone] Fax: [phone]