9
SPECIFICATIONS
Measurement Conditions (unless otherwise specified): Line voltage 120
Vac, 60 Hz (SCM810) or 230 Vac, 50 Hz (SCM810E); full gain; 1 kHz, one
channel activated;
source impedances: Mic 150
Ω
, Line 150
Ω
; termina-
tions: Line 10 k
Ω
, Phones 300
Ω
(
tip-sleeve and ring-sleeve), Direct Out 10
k
Ω
; Auto mode, equalization 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)
Inputs
Outputs
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
Ω
source;
through 400 Hz –20 kHz filter)
Equivalent Input Hum and Noise:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . –123 dBV (150
Ω
source; through
20 Hz - 20 kHz filter)
Output Hum and Noise (through 20 Hz to 20 kHz filter; channel controls
full counterclockwise))
Master full counterclockwise . . . . . . . . . . . . . . . . . . . . . . . . . –90 dBV
Master full clockwise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –70 dBV
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
Input Channel Activation
Attack Time 4 ms
Hold Time0.4 s (Switchable to 1.0 s)
Decay Time0.5 s
Off-Attenuation
15 dB (switchable to
∞
)
Overload and Shorting Protection
Shorting outputs, even for prolonged periods, causes no damage. Mi-
crophone 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 Time2 ms
Recovery Time300 ms
Indicator Lights red when limiting occurs
Input LEDs
Green on channel activation, red at 6 dB below clipping
Phantom Power
46 Vdc open-circuit through 6.8 k
Ω
series resistance per DIN 45 596
Operating Voltage
SCM810: 120 Vac rated nominal (see
Voltage Selection
for 230 Vac op-
eration), 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: 0
°
to 60
°
C (32
°
to 140
°
F)
Storage: –30
°
to 70
°
C (–20
°
to 165
°
F)
Overall Dimensions
44.5 mm H x 483 mm W x 317 mm D
(1 3/4 x 19 x 12 1/2 inches)
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
.
Me
ets European Union EMC Immunity Requirements (EN 50 082-1, 1992).
Replacement Parts
Block Connector ....................................................................... 95A8580
Knob, Master & Phones (white) ................................................ 95A8238
Knob, Channel Gain (blue) ....................................................... 95B8238
Line (Power) Cord (SCM810) ..................................................95A8389*
Line (Power) Cord (SCM810E)................................................95A8247*
Link Cable................................................................................. 95A8889
*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 supplied cord uses Harmonized IEC Cordage with color coding
as follows: Brown = Line, Blue = Neutral, Green/Yellow = Ground.
Input
Output
Line
Headphones
Direct Out
Low-impedance
mic (150
Ω
)
80 dB
88 dB
34 dB
Line
40 dB
48 dB
-6 dB
Aux
44 dB
52 dB
-
Send/Return
20 dB
28 dB
-
Input
Impedance
Designed for
use with
Actual
(typical)
Input
Clipping
Level
Mic
19-600
Ω
1.6 k
Ω
-15 dBV
Line
≤
2 k
Ω
10 k
Ω
+22 dBV
Aux
≤
2 k
Ω
10 k
Ω
+22 dBV
Send/Return
≤
2 k
Ω
10 k
Ω
+18 dBV
Output
Impedance
Designed for
use with
Actual
(typical)
Output
Clipping
Level
Line
>600
Ω
60
Ω
+18 dBV
Headphones
8-200
Ω
,
60
Ω
recommended
300
Ω
+12 dBV
Direct Out
>2 k
Ω
1 k
Ω
+18 dBV
Send/Return
>2 k
Ω
1 k
Ω
+18 dBV
N 108
