Lectrosonics SPNTWB

Regular price $5,629.58 $5,519.44

Availability: Available Unavailable

Product Type: Pro Audio

Product Vendor: Lectrosonics


Overview Digital Audio Processor, 8 In, Tel. Hybrid, Pwr Amp, Wideband.The SPNTWB combines the boards from the SPN812 and the SPNCWB in a 2RU chassis to provide a complete, stand-alone component for telepresence and audio conference systems. The unit can...


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Product Details


Digital Audio Processor, 8 In, Tel. Hybrid, Pwr Amp, Wideband.The SPNTWB combines the boards from the SPN812 and the SPNCWB in a 2RU chassis to provide a complete, stand-alone component for telepresence and audio conference systems. The unit can be used with additional ASPEN processors to add additional inputs and outputs. Setup and adjustments can be made using the control panel software or the front panel LCD interface. Inputs and outputs appearing on the LCD have been consolidated into logical groups to simplify navigation.The far end audio signals in a conference participate in the same manner as local microphones connected to the processor. Three sites connected via two codecs and a telephone line can be bridged into a single conference as seamlessly as local microphones.

The ASPEN AEC (acoustic echo canceller) provides new and advanced algorithms developed to address the need for a single acoustic echo canceller that could handle the challenges of multi-site bridging and an unlimited number of microphones. The AEC converges very quickly, then continues to increase the cancellation depth at every opportunity as a conference continues. Cancellation depth will increase even with brief signal peaks from the far end, and convergence will never be lost with any type of signal or in double talk situations.The AEC in combination with the patented gain proportional mixing algorithm* provides outstanding audio quality without echo heard at the far ends.

Signals from the far ends of the conference are routed to the local sound system also to a final mix that is used as a reference signal by the AEC. Audio from the local microphones (which includes far end audio from the local loudspeakers) is routed to the AEC via a second final mix for cancellation of the far end signals. After processing, the output of the AEC is routed back to the far ends through the matrix.The proprietary noise reduction filter used in ASPEN processors is a third octave dynamic processor which is very effective when applied to the far end Codec and telephone line signals when poor connections occur.

An ethernet port is provided for setup and control via standard network connections, and an RS-232 port is provided for use with remote control systems. The design allows simultaneous, multi-point third party control.Two channel power amplifier is included for loudspeakers in the local sound system. The power amplifier is driven by final mix outputs from the matrix and has a full set of signal processing, including parametric EQ, compressor and limiter. Class-D amplification is implemented with a late generation component that provides exceptional efficiency, low heat, excellent audio performance and cannot be damaged by wiring errors.


  • Quad-reference Wideband Acoustic Echo Canceller supporting 3-way Bridging

  • Two maximum speed grade, 4th generation SHARC® processors*

  • Dual Codec interfaces

  • TCP/IP Ethernet Addressable

  • Fully integrated with ASPEN digital matrix

  • Adaptive Proportional Gain Automatic Mixing at the Matrix Crosspoints

  • Third Octave Noise Filter on each channel

  • Sigma-delta class-D audio power amplifiers

  • Built-in 8 in/12 out ASPEN mixer with full signal processing on all inputs and outputs


Output impedance  < 50 ?, all outputs, at all attenuator settings
Headroom  20 dB
Max. input level  20 dBu
  Tone (sine wave)  
  Mic/Line Inputs/Line Outputs  (12) 5-pin Phoenix
Speaker outputs  (2) 10W, class D, BTL wiring to double power 
  Programmable Logic I/O  (2) DB-25
  ASPEN port  (2) Dual RJ-45
Gain  0 dB to 56 dB, programmable in 8 dB steps (the analog gain is automatically selected by selecting the input gain)
  Nominal level  0 dBu
Nominal level  0 dBu, channels 1-8, 0 dBu, -20 dBu, -40 dBu, channels 9-12
THD + noise  0.01%
THD + noise  0.01%
  Analog voltage range  0-5V
  Transmission speed  1 Gbps
  System  1.333 ms (Master) + .125 ms for each Slave board
AEC Bandwidth  10 kHz
  Max sink current  100 mA
Power requirements  100-240 VAC, 50/60 Hz
Dynamic range  102 dB
Input Dynamic Range (Codec)  102 dB (unweighted 20 - 20 kHz)
Dynamic range  105 dB
Output Dynamic Range (Codec)  105 dB (unweighted 20 - 20 kHz)
EIN  -127 dBu (20Hz – 20kHz, unweighted)
AEC Tail Time  128 ms tail time - will never diverge, regardless of signal type (i.e. sine wave)
  Input impedance  15k ohm (differential); 375k (common)
  Number of logic outputs  16
  Housing (WxHxD)  17.50 x 3.50 x 7.25 inches
Mic/line outputs  1-8 line level (0dBu), 9-12 mic/line level (0, -20, -40dBu)
  Example  2.958 ms for 192 inputs with 48 outputs (system with 2-SPN1624 and 5-SPN32i processors)
  Gain  -20 dB to +20 dB, programmable in 1 dB steps
Telephone Hybrid Return Loss  26 dB + line echo canceller = 45 dB
  Number of inputs  30
Tone control stages  4 per input channel
  Max supply voltage  40 V
Line EC Tail Time  48 ms tail time
Phantom voltage  48 V
  Supply voltage for control I/O  5 V 
  Weight  5.65 lbs. (without AC cord)
Power consumption  50 Watts
  Output impedance  50 ?
  Connector  5-pin Phoenix
  Power amp output  5-pin Phoenix
  Single-board  64 audio samples = 1.333 ms
  Max current  750 mA
Input impedance  8 k? differential mode, 2 k? common mode
ADFE  8 per input channel (configurable as Static or Dynamic)
Parametric EQ stages  8 per output channel
  Logic control  active low
Noise reduction filters  Adjustable 6 to 35 dB on every input
Filters  All filters, including the noise reduction filter (NRF), have zero processing delay.
Mic/Line Inputs  All inputs are digitally programmable-gain microphone to line level differential inputs. Either side can be grounded or left floating. The cable shield shall be connected to ground
Line Outputs  All outputs are floating transformerless differential outputs. Either side can be grounded or left floating. The cable shield shall be connected to ground.
Low Pass  Butterworth (6, 12, 18, 24 dB/octave)
High Pass  Butterworth (6, 12, 18, 24 dB/octave)
Low Shelving  Butterworth (6, 12, 18, 24 dB/octave)
High Shelving  Butterworth (6, 12, 18, 24 dB/octave)
  Cable type  CAT-6
Acoustic Echo Canceller  Centralized, bridgeable for Telepresence
  RS-232  DB-9
  Telephone Set/Line  Dual RJ-11
  Remote control  Dual RJ-45
Audio outputs (Codec)  Floating balanced
  Additional parameters  frequency [Hz]
  Additional parameters  frequency [Hz]
  Power  IEC 60320 C14
  Codec 1  Lectrosonics RCWTH4; RJ-45 jack
  Tel  Lectrosonics RCWTH4; RJ-45 jack
  White noise  level [dBu]
  Pink noise  level [dBu]
  Physical level  LVDS (Low Voltage DIfferential Signal) high speed
  Ethernet  RJ-45
  Faceplate  Standard 19 inch 2RU
Audio Performance (Codec)  THD + noise: 0.01%
  Logic input  TTL, LVTTL, CMOS, LVCMOS




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