Symetrix Radius NX 12x8 DSP Management system
Symetrix Radius NX 12x8 DSP Management system
Symetrix Radius NX 4x4 DSP Management system
Symetrix Radius NX 4x4 DSP Management system

Symetrix Radius NX 4×4 DSP Management system

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4 In, 4 Out DSP Management System
  • Optional AEC coprocessor module – up to 16 channels.
  • USB audio port enables soft-codecs + record/playback.
  • Dedicated routing resources for a 128×128 Super Matrix.
  • 4-port Gigabit Switch serves Dante + control networks.
  • Ultra-low noise preamps with 3 dB gain steps.
  • Support for Radius and Edge Expansion Cards.


General Specifications

Processor1 x Analog Devices Griffin ADSP-SC587 dual- core DSP @ 500 MHz
Raw processing capacity500 MIPS, 6 GFLOPS, 2 GMACS
Sampling rate48 kHz, ± 100 ppm.
Frequency response (A/D/A)20 Hz – 20 kHz, ± 0.5 dB.
Dynamic range (A/D/A)> 114 dB, A-weighted.
Channel separation (A/D/A)> 110 dB @ 1 kHz, +24 dBu
Latency (A/D/A)1.04 ms, inputs routed to outputs
Delay memory174 mono seconds.
Analog control inputs0-3.3 VDC.
Recommended external control potentiometer10k Ohm, linear.
Logic outputsLow (0V) when active, pulled high (5V) when inactive.
Logic output maximum external power supply voltage / current sinking24 VDC / 50 mA.
Logic output maximum output current10 mA.
THD + Noise< -95 dB (22.4 kHz BW, unweighted); 1 kHz @ +15 dBu with 0 dB gain
RS-232 accessory serial I/O57.6 kbaud (default), 8 data bits, 1 stop bit, no parity, no flow control wired straight-through, only pins 2, 3, and 5 required
RS-485 serial I/O38.4 kbaud (default) 8 data bits, 1 stop bit, no parity, no flow control. May be broken out of ARC port
Ethernet CableStandard CAT5/6, maximum device to device length = 328 feet / 100 meters
Dante CableStandard CAT6, maximum device to device length = 328 feet / 100 meters
ARC CableStandard CAT5/6, distance dependent upon load and number of devices
Maximum stored presets1000.

AEC (if installed)*

Number of ChannelsDual-core module: For standard conferencing, up to sixteen (16) channels with two (2) references. For mix-minus applications, up to eight (8) channels with eight (8) references. Single-core module: For standard conferencing, up to eight (8) channels with one (1) reference. For mix-minus applications, up to four (4) channels with four (4) references.
Tail Length400 mS maximum, dependent on channel and reference count
Convergence RateTypically > 90dB/sec
Latency11 mS
Processors1 x Analog Devices Griffin ADSP-21584 dual-core DSP @ 500 MHz
Raw processing capacity500 MIPS, 6 GFLOPS, 2 GMACS
*Optional coprocessor module required, single-core or dual-core models are available.

Analog Inputs

Connectors3.81 mm terminal blocks.
Number of inputsFour (4) switchable balanced mic or line level
Nominal input level+4 dBu
Maximum input level+24 dBu.
Mic pre-amp gain0 to 51 dB in 3 dB steps with ± 24 dB digital trim
Mic pre-amp EIN< -125 dB with 150 Ohm source impedance, 22.4 kHz BW
CMRR> 50 dB @ 1 kHz, unity gain
Input impedance2k Ohms balanced, 1k Ohms unbalanced
Phantom power (per input)+48 VDC @ 10 mA maximum.
Dynamic range> 115 dB, A-weighted.
THD + Noise< -100 dB (22.4 kHz BW, unweighted); 1 kHz @ +15 dBu with 0 dB gain.
Latency0.31 mS

Analog Outputs

Connectors3.81 mm terminal blocks.
Number of outputsFour (4) balanced line level
Nominal output level+4 dBu with 20 dB of headroom
Maximum output level+24 dBu (+22.8 dBu into a 2k Ohm minimum load)
Output impedance300 Ohms balanced, 150 Ohms unbalanced.
Dynamic range> 117 dB, A-weighted.
THD + Noise< -97 dB (22.4 kHz BW, unweighted); 1 kHz, 0 dB gain +8 dBu output
Latency0.65 mS.

USB Audio I/O

ConnectorOne (1) high-retention Type B
Interface2.0 with Audio class 1.0 legacy modes
Capacity1×1 (echo cancelling speakerphone and non-echo cancelling speakerphone modes) – driverless, 2×2 line I/O mode – driverless, and 8×8 line I/O mode – driver included
Sample Rate48 kHz
Bit Depth16-bit, speakerphone modes; 16 or 24-bit, line modes

Mechanical Data

Space Required1U (WDH: 18.91 in. x 9.5 in. x 1.72 in. / 48.02 cm x 24.13 cm x 4.37 cm). Depth does not include connector allowance. Allow at least 3 inches additional clearance for rear panel connections. Additional depth may be required depending upon your specific wiring and connections.
Electrical100-240 VAC, 50/60 Hz, 60 Watts maximum, universal input.
VentilationMaximum 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.
Shipping Weight13 lbs. (5.9 kg).
Certifications or Compliancee Safety: UL 60065, cUL 60065, IEC 60065 EMC: EN 55103-1, EN 55103-2, EN55032, EN 61000-3-2, EN 61000-3-3, ICES-003, FCC Part 15 (all Class A) Environmental: RoHS

The device shall provide four analog mic/line inputs that are adjustable from line to mic level with coarse gain, fine trim, phantom power, invert and mute, and four analog line outputs that are adjustable with fine gain and mute. All signal processing, mixing and routing functions (including I/O levels) shall be controllable via software. Audio inputs and outputs shall be accessed via rear panel 3.81 mm terminal block connectors.

An expansion card slot may accommodate either a 2 line VoIP interface card, 2 line analog telephone interface card, 8×8 USB audio I/O card, 4 channel digital input card, 4 channel digital output card, 4 channel mic/line input card, 4 channel AEC input card, 4 channel analog output card, or remain empty.

An internal DSP coprocessor module may be installed for additional application-specific processing such as acoustic echo cancellation (AEC).

A USB 2.0 audio I/O port with class 1.0 legacy modes on a high-retention Type B connection is configurable for up to 8×8 line I/O as well as 2×2 line I/O, 1×1 speakerphone, or 1×1 echo- cancelling speakerphone profiles.

Network audio expansion shall be provided by the Dante protocol with a capacity of 128 (64×64) channels. Primary and Secondary Dante network audio connections shall be provided for redundant network implementation. Connectors shall be 1000 Base-T RJ45 utilizing CAT6 cable.

A designer software application shall be provided that operates on a Windows computer, with network interface installed, running Windows 7® or higher operating system. Computer connection for configuration shall be via the device’s rear panel Ethernet connector. All internal processing shall be digital (DSP). Available DSP components shall include (but not be limited to) various forms of: mixers, equalizers, filters, crossovers, dynamics/gain controls, routers, delays, remote controls, meters, generators, onboard logic, and diagnostics.

The front panel shall include a display and a momentary switch. The display shall provide communications and system status, I/O metering, and fault messages.

External control shall include dedicated software screens as well as preset selection, I/O level control and muting using the optional ARC wall panel remote controls via industry-standard CAT5 cable with RJ45 connectors. A built-in web server shall provide four instances of ARC-WEB, which allows for user control from nearly any web browser or mobile device. Logic I/O shall consist of four contact closures or two potentiometer inputs along with four logic outputs. The logic outputs may be used to drive LEDs directly or control external relays or switchers. All program memory shall be non-volatile and provide program security should power fail. The device shall provide an on board real time clock to facilitate automatic, timed changing of presets and may sync to NTP. Third-party control systems may interface over IP and RS-232 using a published ASCII control protocol.

Audio conversion shall be 24-bit, 48 kHz and internal processing shall be 32-bit or 40-bit floating point, 48 kHz. The dynamic range shall not be lower than 115 dB, A-weighted with a maximum input level of +24 dBu and maximum output level of +24 dBu.

The device shall have an IEC power input socket for 120-240 VAC. 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 Galvalume and molded plastic, and mount into a standard 19” 1U EIA rack using detachable rack ears. The device shall be a Symetrix Radius NX 4×4.

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