Voice Processor 2x

  • A DSP Designed Specifically for Voice Processing 
  • 2 Independent Channels
  • Supports up to 50 Unique Presets
  • Turn-key Programming for Rapid Deployment

A Crucial LInk.  The microphone is a crucial link to the audience. Proper management of that link is essential. Voice Processor 2x is an outstanding programmable microphone processor that’s flexible, powerful, and easy to use.

Two Independent Voice Processors.  Two independently programmable channels of ultra-low latency digital mic processing in one rack space. 2 mic/line inputs, word clock input, 2 mic/line outputs, 2 AES-3 outputs.

DSP Specifically Tailored for Voice Processing.  Compression, EQ, de-essing, downward expansion, high and low pass filters, waveform symmetry. All there. All at once.

Turn-Key Means Symetrix Did the Hard Work.  Voice Processor 2x’ Windows® application presents an intuitive GUI which mimics the hardware signal flow to enable a short programming timeline and rapid hardware deployment.

When It’s Time to Go On-Air.  Voice Processor 2x stores up to 50 presets for on-air personalities. Presets may be recalled from the front panel or remotely.


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Nominal Input Level +4 dBu or -10 dBV line level, to -50 dBu mic level (software selectable) with 20 dB of headroom.
Maximum Input Level +23 dBu.
Input Impedance 6.67 kΩ balanced, > 3.3 kΩ unbalanced
CMRR > 75 dB @ 1 kHz, unity gain.
Mic Pre-amp EIN > -127 dB, 22 Hz - 22 kHz, 100 Ω source impedance.
Phantom Power +48 VDC.
A/D Conversion 24-bit delta/sigma.
A/D Dynamic Range 116 dB (A-Weighted).
A/D THD+Noise -102 dB (un-weighted); 1 kHz @ -2 dBFS with 0 dB gain.
A/D Latency 0.25 mS.


Nominal Output Level Analog +4 dBu line level with 20 dB of headroom.
Nominal Output Level Digital -20 dBFS. For unbalanced analog output, float (do not connect) the minus output terminal. Unbalanced usage results in 6 dB lower output level.
Maximum Output Level Analog +24 dBu. Digital: 0 dBFS.
Output Impedance Analog 200 Ω balanced, 100 Ω unbalanced. Digital: 110 Ω.
D/A Conversion 24-bit delta/sigma.
D/A Dynamic Range 114 dB (A-Weighted).
D/A THD+N -98 dB (un-weighted); 1 kHz @ -2 dBFS.
D/A Latency 0.2 mS.
Mic Level Output Pad (Internal) -42 dB.


Nominal Sampling Rate 48 kHz.
Word Clock Input Range 22 - 192 KHz
A/D/A Frequency Response 20 Hz - 20 kHz, +/- 0.25 dB.
A/D/A Dynamic Range 113 dB (A-Weighted).
A/D/A Latency < 0.7 mS; with all DSP active.
Interchannel Crosstalk -90 dB @ 1 kHz, typical.

Mechanical Data

Space Required 1U (WDH: 48.02 cm x 23.11 cm x 4.37 cm / 18.91 in x 9.1 in x 1.72 in), depth is specified from front panel to back of connectors. Allow at least 3 inches additional clearance for rear panel connections. Additional depth may be required depending upon your specific wiring and connections.
Electrical 100-240 VAC, 50/60 Hz, 25 Watts maximum. No line voltage switching required.
Ventilation Maximum recommended ambient operating temperature is 30 C / 86 F. Ensure that the left and right equipment sides are unobstructed (5.08 cm, 2 in minimum clearance). The ventilation should not be impeded by covering the ventilation openings with items such as newspapers, tablecloths, curtains, etc.
Certifications UL 60065, cUL 60065, IEC 60065, EN 55103-1, EN 55103-2, FCC Part 15, RoHS.
Weight 8 lbs. (3.60 kg).

Architect and Engineer Specifications

The device shall provide two inputs that are selectable as line or mic level with phantom power and four outputs (two line level analog and two AES3 digital). All signal processing (including input gains) shall be controllable via software. Audio inputs and outputs shall be accessed via rear panel XLR connectors.

The Graphical User Interface (GUI) software shall be installer programmable using the Windows® XP or Vista operating system. Computer connection and control shall be via the device’s rear panel Ethernet connector. The GUI shall provide display and control of all signal processing and configuration functions including, but not limited to: Input and Output Gain, Highness Filtering, Lowpass Filtering, De-essing, Downward Expansion, Compression, Parametric Equalization, Signal Routing, Voice Symmetry and Polarity.

The front panel shall include input and output level indication as well as indicators for POWER, NETWORK, and REMOTE. Additionally, a front panel LCD shall display certain system parameters and may be used for preset recall via the front panel UP, DOWN and MENU buttons.

External control shall include preset selection and/or comprehensive parameter adjustment, depending upon the particular remote in use, and shall be via industry-standard CAT5 cable with RJ45 connectors to the front or rear panel REMOTE ports. All program memory shall be non-volatile and provide program security should power fail. 3rd party control systems may interface via Ethernet using a published Control Protocol.

Audio conversion shall be 24-bit, 48 kHz with configurable output sample rate. The dynamic range of the processor shall not be lower than 113 dB A-weighted.

The device shall have an IEC power input socket. The device shall meet UL/CSA and CE safety requirements and comply with CE and FCC Part 15 emissions limits. The device shall be RoHS compliant. The chassis shall be constructed of cold rolled steel and moulded plastic, and mount into a standard 19” 1U EIA rack. The device shall be an AirTools model Voice Processor 2x, Engineered by Symetrix.