Manufacturers description
SCM410 Four Channel Automatic Mixer
Automatic mixing is a tremendous problem-solving tool allowing sound system installers to eliminate common problems such as insufficient gain before feedback and muddy speech quality. Shure is the industry leader in automatic mixing with our unique IntelliMix technology. IntelliMix automatically gates microphones on and off to optimize sound quality in conference facilities, houses of worship, governmental institutions, schools, etc. Shure's SCM410 Automatic Mixer puts all the seamless performance of the 8-channel SCM810 - the recognized standard in automatic mixing - into a half-rack space.
SCM410 Key Benefits:
- Increases the clarity and intelligibility of speech
- Dramatically reduces feedback, reverberation, and comb filtering
- Automates several rigorous operator functions
- Minimizes set up time - plug and play
- Frees up channels on the mixing console
The SCM410 can be used as a turnkey mixing solution in a variety of speech applications:
- Fixed Audio Installations - houses of worship, schools, conference facilities, legislature, hotels
- Portable Applications - rentals, A/V carts, portable audio racks
- Interfaces with Crestron control systems
Features
IntelliMix®- the most advanced and effective automatic mixing algorithm available, incorporating:
- Noise Adaptive Threshold
- MaxBus
- Last Mic Lock-On
- NOMA (Number of Open Mics Attenuated) - automatic gain adjustment as additional microphones are activated
- Inputs and Outputs - 4 balanced mic level XLR inputs, 1 balanced mic/line switchable XLR output, and 1 unbalanced RCA auxiliary output
Specifications
Specification Sheet (pdf)
- Measurement Conditions (unless otherwise specified):
- Line voltage 120 Vac, 60 Hz (SCM410) or 230 Vac, 50 Hz (SCM410E); full gain; 1 kHz, one channel activated; source impedances: Mic 150 ohms; terminations: Line/Mic Aux 10 kilohms
- Frequency Response (at 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 |
Mic |
Aux |
| Low-impedance mic 150 ohms |
80 dB |
40 dB |
68 dB |
- Inputs
-
| |
Impedance |
|
| Input |
Designed
for use with |
Actual(Typical) |
Input
Clipping Level |
| Mic |
19-600 ohms |
1.4 kilohms |
-14 dBV |
- Outputs
-
| |
Impedance |
|
| Output |
Designed
for use with |
Actual(Typical) |
Output
Clipping Level |
| Line |
≥5 kilohms |
300 ohms |
+24 dBV |
| Mic |
≥600 ohms |
3 ohms |
-18 dBV |
| Aux |
≥10 kilohms |
1.5 kilohms |
+14 dBV |
- Total Harmonic Distortion
- <0.1% at +4 dBu output level, 50 Hz to 20 kHz (through 22 Hz to 22 kHz filter; Input at 12 o' clock and Master at 12 o' clock, all other controls full counterclockwise)
- Hum and Noise (150 ohm source; through 22 Hz to 22 kHz filter)
- Equivalent Input Hum and Noise: -123 dBV max., -125 dBV typical
- Output Hum and Noise (channel controls full counterclock-wise):
- Master full counterclockwise: -90 dBV
- Master full clockwise: -70 dBV
- Common Mode Rejection
- >70 dB at 1 kHz
- Polarity
- All inputs to all outputs are non-inverting
- Input Channel Activation
- Attack Time: 4 ms
- Hold Time: 0.4 s
- Decay Time: 0.5 s
- Off-Attenuation
- 13 dB
- Overload and Shorting Protection
- Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to +10 dBV (3V)
- 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: +16 dBu (at output)
- Attack Time: 2 ms
- Recovery Time: 300 ms
- Indicator: Lights red when limiting occurs
- Input LEDs
- Green on channel activation, red at 6 dB below clipping
- Phantom Power
- 12 Vdc open-circuit through 680 ohm resistors
- Operating Voltage
- SCM410: 100-120 Vac rated nominal, 50/60 Hz,100 mA (maximum)
- SCM410E; 220-240 Vac rated niminal, 50/60 Hz, 50 mA (maximum)
- Mains Inrush Current (230 Vac, SCM410E only)
- 0.7 A peak
- Temperature Range
- Operating: -7 degrees to 49 degrees C (20 degrees to 120 degrees F )
- Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)
- Overall Dimensions
- 44 mm H x 219 mm W x 267 mm D (1-3/4 x 8-5/8 x 10-1/2 in.)
- Net Weight
- 1.75 kg (3.86 lbs)
- Electromagnetic Compatibility (EMC) Statement
- The SCM410E mixer is intended for use in E1 (residential and E2 (light industrial) environments, as defined in European EMC standard EN 55103. It meets the applicable test and performance criteria found in the standard for these environments. EMC conformance is based on the use of recommended and supplied cables.
Description
SHURE INTELLIMIX AUTOMATIC MIXERS
SCM810E/ SCM410E
The SCM810E is a rack mounting 1U automatic mixer with advanced logic capabilities and linking ability for control of up to 400 microphones. Like the FP410E, the SCM810E uses Shure ‘Intellimix’ circuitry to activate microphones for speech but not background noise, ensure that only one microphone opens for each source and keep the last used microphone open for constant ambient noise. The SCM810E also has circuitry to reduce the overall level as the number of open microphones increases, to minimise the risk of feedback, individual channel direct output and adjustable EQ, and logic control for cough buttons, remote status indication and loudspeaker muting. Front panel controls remain reassuringly straightforward, with a channel gain control with bi-colour LED indicator, aux input jack with level control, master level control, bargraph level display and phones socket and level control. EQ presets are recessed and all other controls are on rear panel switches or logic connector.
The SCM410E is identical, other than having only four channels.
Technical Specification:
|
Max gain: | Mic: 80dB (34dB direct out) Line: 40dB (–6dB direct out) |
|
Max line gain: | 40dB line out: –6dB direct out |
|
Input clipping: | Mic: –15dBV; line, aux: +22dBV |
|
Phantom power: | +46V DC switchable per channel |
|
Equalisation: | LF: 6dB/oct 25–320 Hz: HF: ±8dB at 10kHz, shelving |
|
Output clipping: | Line, direct: +18dBV; phones: +12dBV |
|
Frequency response: | 50Hz–20kHz ±2dB |
|
THD: | <0.1% at +18dBV output 50Hz–20kHz |
|
Input noise: | –125 dBV 150R |
|
Automatic operation: | |
|---|
|
Switch on time: | 4ms |
|
Hold time: | 0.4s/switchable to 1.0s |
|
Decay time: | 0.5s |
|
‘Off’ attenuation: | –15dB/infinity switchable |
|
Peak limiter: | Off, +4, +8, +16 dBm switchable |
|
Dimensions: | 483(w) × 44.5(h) × 317(d) mm |
|
Weight: | 4.3 kg |