MVC 121 xi – Three Source Audio Mixer with DSP
Key Features
- Mixes two microphone inputs and one stereo line input to two stereo outputs
- Audio DSP on all inputs
- Selectable front panel input and output level adjustment
- DSP Configurator Pro provides an intuitive graphical user environment
- Four digital input ports for remote mute triggering
- Predictable, low latency hardware DSP
| Audio system | |||
|---|---|---|---|
| Gain | |||
| Balanced output | 0 dB | ||
| Unbalanced output | -6 dB | ||
| Frequency response | 20 Hz to 20 kHz, ±0.3 dB | ||
| THD + Noise | <0.02%, 20 Hz to 20 kHz At maximum balanced output (unweighted) | ||
| S/N | |||
| Analog Input to Analog Out | >100 dB, 20 Hz to 20 kHz At maximum balanced output (unweighted) | ||
| Crosstalk | <-90 dB @ 20 Hz to 20 kHz, fully loaded | ||
| Calibration reference | |||
| A/D | 1 kHz, +4.0 dBu sine (1.228 Vrms) = -17 dBFS | ||
| D/A | 1 kHz, -17 dBFS sine = +4.0 dBu (1.228 Vrms) | ||
| Audio input | |||
| Mic/Line Inputs (1-2) | |||
| Microphone inputs | 2 mono, mic/line, balanced/unbalanced | ||
| Connectors | (1) 6-pole, 3.5 mm captive screw, dual-mono, balanced/unbalanced | ||
| Impedance | >10k ohms balanced or unbalanced | ||
| Nominal level | +4 dBu when level is set to 0 dB gain; adjustable from −60 dBu to +4 | ||
| Maximum level | +21 dBu (at rated THD + N) when input gain is set to 0 dB | ||
| Equivalent input noise | <-120 dBV (1 µVrms) (at 40 dB input gain) | ||
| CMRR | >65 dB typical | ||
| Input gain adjustment | -18 dB to +60 dB in 0.1 dB steps, adjustable per input | ||
| Phantom power | +48 VDC, (enabled or disabled via software and the front panel) | ||
| Line Level Input | |||
| Number/signal type | 1 stereo, line-level, balanced/unbalanced | ||
| Connectors | (1) 6-pole, 3.5 mm captive screw, stereo, balanced/unbalanced | ||
| Impedance | >10k ohms balanced/unbalanced | ||
| Nominal level | +4 dBu when level is set to 0 dB gain; adjustable from −60 dBu to +4 dBu | ||
| Maximum level | +21 dBu (at rated THD + N) when input gain is set to 0 dB | ||
| Equivalent input noise | <-120 dBV (1 µVrms) at 40 dB input gain | ||
| CMRR | >60 dB typical | ||
| Input gain adjustment | -18 dB to +24 dB in 0.1 dB steps, adjustable per input | ||
| Audio Output (Variable L/R, Fixed L/R) | |||
| Number/signal type | 2 stereo, line-level, balanced/unbalanced | ||
| Connectors | (2) 6-pole, 3.5 mm captive screw, stereo, balanced/unbalanced | ||
| Impedance | 100 ohms with balanced lines (or 50 ohms with unbalanced lines) | ||
| Gain error | ±0.1 dB channel to channel | ||
| Maximum level (Hi-Z) | >+21 dBu balanced, >+15 dBu unbalanced | ||
| Output Attenuation (VARIABLE) | -100 dB to 0 dB (controlled in 0.1 dB steps) | ||
| Output Gain (FIXED) | -24 dB to +12 dB (controlled in 0.1 dB steps) | ||
| Audio processing | |||
| A/D, D/A conversion | 24-bit / 48 kHz PCM | ||
| |||
| External Control (RS-232) | |||
| Serial control port | (1) 3-pole, 3.5 mm captive screw | ||
| Protocol and baud rate | Bidirectional RS-232: 38400 baud, 8 data bits, 1 stop bit, no parity | ||
| Pin configuration | Pin 1 = Tx, Pin 2 = Rx, Pin 3 = G | ||
| USB control port | 1 front panel USB-C (female) | ||
| Protocol | USB 2.0, low speed | ||
| Control/Configuration program | Extron DSP Configurator Pro for Microsoft Windows® 10/11 | ||
| API | Extron Simple Instruction Set (SIS™) | ||
| Digital Logic Inputs | |||
| Digital I/O ports | (1) 6-pole, 3.5mm captive screw | ||
| Pin configuration | Pin 1 = Read, Pin 2 = Read, Pin 3 = Read, Pin 4 = Read, Pin 5 = +5 VDC @ <= 150 mA, Pin 6 = GND | ||
| Programmable pullup resistor | 3k ohm | ||
| Over-Current protection | Pin 5 voltage output provides over-current and short circuit protection which resets after power-cycling | ||
| General | |||
| External power supply | |||
| Part number | 70-1175-01 | ||
| Model | PS 1205 C | ||
| Input (AC) | 100-240 VAC, 50-60 Hz 0.25 A | ||
| Output (DC) | 12 VDC, 0.5 A, 6 watts | ||
| Power input requirement | 12 VDC / 0.46 A | ||
| Power consumption | |||
| Device | 4.2 watts | ||
| Device and power supply | 5.2 watts | ||
| Thermal dissipation | |||
| Device | 13.0 BTU/hr | ||
| Device and power supply | 16.6 BTU/hr | ||
| Cooling method | Passive, unventilated | ||
| Environmental | |||
| 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) | ||
| Mounting options | |||
| Rack mount | Yes, with optional 1U rack shelf | ||
| Furniture mount | Yes, with optional mini under-desk mounting kit | ||
| Physical properties | |||
| Enclosure type | Metal | ||
| Enclosure dimensions | 1.7″ H x 4.3″ W x 3.0″ D (1U high, quarter rack wide) (43 mm H x 109 mm W x 76 mm D) (Depth excludes connectors and knobs) | ||
| Product weight | 0.5 lbs (0.2 kg) | ||
| 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 | ||
| Warranty | |||
| Device | 3 years parts and labor | ||
| Everlast power supply warranty | 7 years parts and labor | ||
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The Extron MVC 121 xi is a compact, three source audio mixer featuring audio DSP for mixing and signal processing. The MVC 121 xi provides a stereo line level input and two mic/line level inputs with 48 volt phantom power for condenser microphones, plus fixed and variable stereo line level outputs. It offers gain, filters, bass and treble tone controls, along with parametric EQ. Quick and intuitive configuration of essential parameters is possible using the front panel controls or DSP Configurator Pro software. The MVC 121 xi is ideal for basic presentation applications that require line and microphone audio mixing with audio DSP in a small form factor.
Audio DSP
The audio DSP built into the MVC 121 xi provides a wide dynamic range and utilizes 24-bit audio converters with 48 kHz sampling to maintain audio signal transparency. Convenient, easy-to-configure tools are available to control levels, filters, dynamics processing, bass and treble shelving filters, and parametric EQ.
Easy-to-Use DSP Configurator Pro Software
DSP Configurator Pro software features an intuitive on-screen layout that offers fast access to digital audio signal processing tools as well as audio mixing. Designers can quickly get a snapshot view of the entire audio system, including processing blocks and mix points.
Flexible Mixer
The MVC 121 xi features a stereo line level input and two mic/line level inputs, each of which is mixed into the fixed and variable stereo line level outputs. It is a quick and effective audio mixing solution for adding microphone capability to a new or existing system. The variable line level output can be sent to a PA system, while the fixed line level output can be routed to an assistive listening system.
Versatile Control Options
The MVC 121 xi can conveniently be controlled and configured via RS-232 serial control or USB. It also includes digital input ports, which allow for external muting control without a control system.
Features
- Mixes two microphone inputs and one stereo line input to two stereo outputs — Two mono microphone or line level inputs are mixed with a stereo line level input to fixed and variable stereo line level outputs.
- Inputs: Two balanced or unbalanced mic/line level on 3.5 mm, 6-pole captive screw connectors; balanced or unbalanced stereo line level on a 3.5 mm, 6-pole captive screw connector
- Outputs: Two balanced or unbalanced line level outputs on 3.5 mm, 6-pole captive screw connectors - one fixed, one variable
- Audio DSP on all inputs — The MVC 121 xi provides gain, filter, and tone processing for quick and easy audio system configuration.
- Selectable front panel input and output level adjustment — A large rotary encoder and three select buttons provide Group adjustment, which is displayed on an eight segment LED. When no input is selected, the encoder controls the variable output level and the display indicates the output level.
- DSP Configurator Pro provides an intuitive graphical user environment — A powerful and user-friendly PC-based software tool for managing all audio operations of the MVC 121 xi. It enables complete setup and configuration of digital audio processing tools with a clear view of all inputs and outputs, audio processing blocks, routing, and mix points in a single window.
- Four digital input ports for remote mute triggering — Four digital input ports are provided, so that each input and the variable output can be individually muted by remote trigger.
- Predictable, low latency hardware DSP — Input to output latency is fixed within the MVC 121 xi, regardless of the number of active channels or processes. Predictable, low latency processing keeps audio in sync with video, and prevents distractions to a presenter resulting from delayed live audio.
- 48 volt phantom power — The MVC 121 xi is equipped with selectable 48 volt phantom power for the mic inputs, enabling the use of condenser microphones.
- 24-bit/48 kHz analog-to-digital and digital-to-analog converters — High performance converters preserve audio integrity in input and output signal conversion, while maintaining latency.
- Fixed and variable stereo line level outputs — The fixed output is ideal for recording devices or other equipment such as ALS - assistive listening systems, while the variable output is designed to drive a power amplifier.
- Multi-function LED level indicator — Displays the selected input gain adjustment or output volume setting and acts as an output level meter.
- Front panel USB-C configuration port — Enables easy configuration via DSP Configurator Pro software without having to access the rear panel.
- Deployable without software — Quick and intuitive configuration of essential parameters is possible using only the front panel controls.
- RS-232 control port — Using SIS commands, the MVC 121 xi can be integrated into a control system.
- Live and Emulate operating modes with configuration file saving — Live mode allows integrators to connect to the MVC 121 xi with DSP Configurator Pro to make live parameter adjustments while hearing or metering them in real-time. This avoids the need to compile and upload a configuration file to the DSP. Emulation mode allows settings to be configured offline, then uploaded to the MVC 121 xi. The software also downloads configuration files from the mixer for archiving.
- Soft limits provide optimal group master adjustment range — Group master volume range can be limited using soft limits to maintain optimal minimum and maximum levels when using external volume control. This prevents operators from over or under-adjusting levels. DSP Configurator Pro provides quick software control of soft limits from the Group Controls screen.
- Front panel security lockout — The MVC 121 xi offers various levels of front panel security lockout to prevent unauthorized use in permanent installations.
- Rack-mountable 1U, quarter rack width metal enclosure
- External Extron Everlast™ power supply included, replacement part #70-1175-01 — Provides worldwide power compatibility with high‑demonstrated reliability and low power consumption. This power supply is compatible with the ZipClip 50 Mounting Kit.
- Extron Everlast Power Supply is covered by a 7‑year parts and labor warranty
- TAA Compliant version available — Please inform your local Extron representative if your order requires compliance with TAA regulations.