MLA VC10 Plus – Volume Control Module
Key Features
- Converts RS-232 commands to contact closure, voltage, and impedance changes for remote amplifier volume control
- Volume and mute control for the MPA Series and select XTRA™ Series amplifiers, and a wide range of commercial amplifiers
- For MediaLink® Controllers with RS-232, TouchLink®-based systems, and other control systems
- Ground isolated, digital circuitry prevents noise in signal path
- Soft Start volume ramping gently restores volume levels during power cycles and unmuting
- Selectable volume taper provides a consistent linear or natural logarithmic feel to volume changes
| MLA VC10 Plus | |||
| Control/remote — MLA volume controller | |||
|---|---|---|---|
| Serial control port | 1 RS-232, 3.5 mm captive screw connector, 3 pole | ||
| Baud rate and protocol | 9600 baud, 8 data bits, 1 stop bit, no parity | ||
| Serial control pin configuration | 1 = Tx, 2 = Rx, 3 = GND | ||
| USB control ports | 1 front panel female mini USB B | ||
| USB standards | USB 2.0, low speed | ||
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| Program control | Extron Simple Instruction Set (SIS™) | ||
| Control — voltage — amplifier | |||
| Number/type | 1 control voltage | ||
| Connectors | (1) 3.5 mm captive screw connector, 2 pole | ||
| Pin configuration | 1 = +, 2 = GND | ||
| Control voltage output range | 0 – 10 VDC (typical tolerance ±0.2 volts), adjustable | ||
| Control — resistance — amplifier | |||
| Number/type | 1 control resistance | ||
| Connector | (1) 3.5 mm captive screw connector, 3 pole | ||
| Pin configuration | 1 = +, 2 = wiper, 3 = GND | ||
| Range | 0 – 10 kilohms (typical tolerance ±0.2 kilohms), adjustable | ||
| Max. input voltage | 25 VDC | ||
| Max. current/power rating | 5 mA/25 mW across the + and wiper or GND and wiper pins | ||
| Control — relay — amplifier | |||
| Number/type | 1 momentary or latching | ||
| Connector | (1) 3.5 mm captive screw connector, 3 pole | ||
| Connector configuration | 1 = 1 normally open relay, 2 = common, 3 = 1 normally closed relay | ||
| Contact rating | 24 V, 1 A | ||
| General | |||
| Power | Supplied by a 12 VDC, 1 A external power supply (sold separately) or a MediaLink® or IP Link® controller | ||
| Power input requirements | 12 VDC, 0.3 A (max.) | ||
| Ambient temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing | ||
| Cooling | Convection, no vents | ||
| Mounting | |||
| Rack mount | Yes, with optional 1U rack shelf or back of the rack mounting kit | ||
| Furniture mount | Yes, with optional mini under-desk mounting kit, or set on tabletop | ||
| Enclosure type | Metal | ||
| Enclosure dimensions | 1.7″ H x 2.2″ W x 3.0″ D (1U high, one-eighth rack wide) (4.3 cm H x 5.6 cm W x 7.6 cm D) (Depth excludes connectors.) | ||
| Product weight | 0.2 lbs (0.1 kg) | ||
| Shipping weight | 1 lb (0.5 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Regulatory compliance | |||
| Safety | CE, c-UL, UL | ||
| EMI/EMC | CE, C-tick, FCC Class A, ICES, VCCI | ||
| Environmental | Complies with the appropriate requirements of RoHS, WEEE. | ||
| Product warranty | 3 years parts and labor | ||
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The Extron MLA VC10 Plus Volume Control Module converts RS-232 commands from a control system into voltage or impedance changes to control audio amplifiers with volume and mute control ports. The MLA VC10 Plus is used to mute or make level changes on an MPA Series or half rack XTRA™ Series amplifier from a TouchLink® Touchpanel system, an RS-232-capable MediaLink® Controller, or other control system. The control module also supports third-party amplifiers that use either voltage or 10k ohm pot control. The MLA VC10 Plus is housed in a 1U, one-eighth rack width metal enclosure for numerous installation options. The MLA VC 10 Plus can be powered by an optional power supply, or from the power supply used for a MediaLink Controller or IPL Series Ethernet Control Interface.
Commercial power amplifiers with volume and mute control capability often are not equipped for RS-232 or Ethernet control. The MLA VC10 Plus bridges the gap between these amplifiers and MediaLink and TouchLink control systems by providing a convenient means to adjust volume and muting. It offers variable voltage and resistance outputs to control volume, plus a dual mode relay port that provides contact closure for muting the amplifier.
The MLA VC10 Plus features Soft Start volume ramping which slowly increases the amplifier’s volume to the previous level when powering up or when the module is unmuted. Soft Start prevents sudden, loud bursts of sound that can damage equipment or harm the listener’s hearing. A mini USB port on the front panel provides convenient access for device configuration. LEDs on the front panel indicate power and mute status, plus relay activity to facilitate setup and troubleshooting. The MLA VC10 Plus also includes an Inverse Mode for amplifiers that require a decrease in control voltage or resistance in order to increase volume. For integration convenience, the control module can be configured using the included Data Viewer software.
Features
- Converts RS-232 commands to contact closure, voltage, and impedance changes for remote amplifier volume control
- Inputs: Bidirectional RS-232 control on 3-pole captive screw connector
- Outputs: Dual mode relay, wiring selectable as Normally Open or Normally Closed, on 3-pole captive screw connector; voltage control port on 2-pole captive screw connector; and 10k ohm resistance control port on 3-pole captive screw connector
- Volume and mute control for the MPA Series and select XTRA™ Series amplifiers, and a wide range of commercial amplifiers
- For MediaLink® Controllers with RS-232, TouchLink®-based systems, and other control systems
- Ground isolated, digital circuitry prevents noise in signal path
- Soft Start volume ramping gently restores volume levels during power cycles and unmuting
- Selectable volume taper provides a consistent linear or natural logarithmic feel to volume changes
- High resolution volume control range for smooth volume changes without audible level jumps
- Real-time status LED indicators for setup and troubleshooting
- RS-232 serial control
- Front panel USB configuration port
- Can be powered from the same power supply used for the MediaLink Controller or IP Link® Control Processor
- Optional energy-efficient external universal power supply available, part # 70-1175-01 — Provides worldwide power compatibility with high reliability and low power consumption for reduced operating costs. Includes a ZipClip 50 Mounting Kit to securely mount an Extron power supply onto most surfaces, including tables and lecterns.