Specifications - Shure SCM810 User Manual

Measurement Conditions (unless otherwise specified): Line volt-
age 120 Vac, 60 Hz (SCM810) or 230 Vac, 50 Hz (SCM810E);
full gain; 1 kHz, one channel activated; source impedances: Mic
Ω Ω
150 , Line 150 ; terminations: Line 10 k
sleeve and ring-sleeve), Direct Out 10 k
tion controls adjusted for flat response
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)
Input Line
Low-impedance 80 dB
mic (150 Ω)
Line 40 dB
Aux 44 dB
Send/Return 20 dB
Inputs
Impedance
Designed
Input for use with
19-600 Ω
Mic
≤
Line
2 kΩ
≤
Aux
2 kΩ
≤
Send/Return
2 kΩ
Outputs
Impedance
Designed
Output for use with
>600 Ω
Line
8-200 Ω,
Head-
60 Ω recom-
phones
mended
Direct Out >2 kΩ
Send/Return >2 kΩ
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 . . . . . . . . .
Equivalent Input Hum and Noise . . . . . . . . . . . . . . . . . . . . . . .
20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter; channel
controls full counterclockwise))
Master full counterclockwise
Master full clockwise . . . . . . . . . . . . . . . . . . . . . . . .
Common Mode Rejection
>70 dB at 1 kHz
Polarity
Mic/Line, Send inputs to all outputs are non-inverting; Aux in-
put to all outputs is inverting

SPECIFICATIONS

Ω Ω (
, Phones 300
Ω
; Auto mode, equaliza-
Output
Head- Direct Out
phones
88 dB 34 dB
48 dB –6 dB
52 dB —
28 dB —
Actual Input
(typical) Clipping
Level
1.6 kΩ -15 dBV
10 kΩ +22 dBV
10 kΩ +22 dBV
10 kΩ +18 dBV
Actual Output
(typical) Clipping
Level
60 Ω
+18 dBV
300 Ω
+12 dBV
1 kΩ +18 dBV
1 kΩ +18 dBV
-125 dBV (150 Ω source;
through 400 Hz - 20 kHz filter)
-123 dBV (150 Ω source; through
. . . . . . . . . . . . . . . . . -90 dBV
-70 dBV
Input Channel Activation
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hold Time . . . . . . . . . . . . .
tip- Decay Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Attenuation
15 dB (switchable to
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no dam-
age. Microphone inputs are not damaged by signals up to 3 V;
Line and Monitor inputs by signals up to 20 V
Equalization
Low-frequency . . . . . . . . . . . . . .
High-frequency
Limiter
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threshold . . . . . . . . . . . . . . . . . .
Attack Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicator . . . . . . . . . . . . . .
Input LEDs
Green on channel activation, red at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 k
45 596
Operating Voltage
SCM810: 120 Vac rated nominal (see Voltage Selection for
230 Vac operation), 50/60 Hz, 200 mA
SCM810E: 230 Vac rated nominal (see Voltage Selection
for 120 Vac operation), 50/60 Hz, 100 mA
Temperature Range
Operating . . . . . . . . . . . . .
Storage . . . . . . . . . . . . . . .
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D
3 1
(1 / x 19 x 12 /
4 2
Net Weight
4.3 kg (9 lb 9 oz)
Certifications
SCM810: Listed by Underwriters Laboratories, Inc., listed as
Certified by Canadian Standards Association; SCM810E:
Conforms to European Union directives, eligible to bear CE
marking; VDE GS-Certified to EN 60 950; meets European
Union EMC Immunity Requirements (EN 50 082–1, 1992).
Replacement Parts
Block Connector
Knob, Master & Phones (white)
Knob, Channel Gain (blue)
Line (Power) Cord (SCM810)
Line (Power) Cord (SCM810E)
Link Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*For systems requiring other mains connectors, obtain a power cord with
an IEC 320 type mating connector for connection to the SCM810, and an
appropriate plug on the other end for connection to the mains. The sup-
plied cord uses Harmonized IEC Cordage with color coding as follows:
Brown = Line, Blue = Neutral, Green/Yellow = Ground.
9
0.4 s (switchable to 1.0 s)
∞
)
6 dB/octave cut, adjustable
corner from 25 to 320 Hz
±6 dB at 5 kHz, ±8 dB at
. . . . . . . . . . . . . . . .
10 kHz, shelving
Switchable: off, +4, +8, +16
(dBm at output)
Lights red when limiting occurs
Ω
series resistance per DIN
° ° °
0 to 60 C (32
° ° °
-30 to 70 C (-20
inches)
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
4 ms
0.5 s
Peak
2 ms
300 ms
°
to 140 F )
°
to 165 F)
95A8580
95A8238
95B8238
95A8389*
95A8247*
95A8889