DMP 128 Plus

12x8 ProDSP Digital Matrix Processors
Key Features
  • Six models with 12 mic/line inputs and 8 outputs
  • All models include a USB Audio interface, providing up to four channels of digital audio sends and returns
  • New Twelve channels of AEC - acoustic echo cancellation
    C models only
  • New Dante audio networking with Dante Domain Manager and AES67 support provides a wide range of expansion capabilities, AT models only
  • Up to eight VoIP lines that support generic Session Initiation Protocol - SIP 2.0 connectivity per RFC 3261
  • Optional ACP Series audio control panels provide intuitive audio system control
The Extron DMP 128 Plus
Model Version Description Part #
DMP 128 Plus 12x8 ProDSP Processor 60-1511-01
DMP 128 Plus AT 12x8 ProDSP Processor w/Dante 60-1511-10
DMP 128 Plus C 12x8 ProDSP Processor w/AEC 60-1512-01
DMP 128 Plus C AT 12x8 ProDSP Processor w/AEC and Dante 60-1512-10
DMP 128 Plus C V 12x8 ProDSP Processor w/AEC and VoIP 60-1513-01
DMP 128 Plus C V AT 12x8 ProDSP Processor w/AEC, VoIP, and Dante 60-1513-10

The DMP 128 Plus Series is the next generation of Digital Matrix Processors featuring Extron ProDSP™ 64-bit floating point technology. The DMP 128 Plus Series is equipped with 12 analog mic/line inputs, eight analog outputs, up to four channels of digital audio input and output via USB, up to eight audio file players, an ACP bus for audio control panels, and new configurable macros. The V models also include up to eight independent channels of VoIP, supporting Session Initiation Protocol - SIP 2.0. The AT models provide Dante® audio networking technology with connectivity for up to 48 digital audio inputs and 24 digital audio outputs. DMP 128 Plus Series processors can be used anywhere from a credenza-based system to a large multi-rack system, and even in a large, complex, decentralized multi-building system.

ProDSP

Extron’s exclusive ProDSP is engineered from the ground up using a powerful 64‑bit floating point DSP engine to provide very wide dynamic range and reduce the potential for clipping. ProDSP also utilizes studio grade 24‑bit audio converters with 48 kHz sampling to maintain audio signal transparency. ProDSP is loaded with powerful, easy‑to‑configure tools to control level, adaptive gain, automixing, dynamics, filters, delay, ducking, loudness, feedback suppression, and AEC.

Easy-to-Use DSP Configurator Software

The power of ProDSP is easily harnessed with the DSP Configurator Software. The flexible on‑screen layout offers fast access to all of the digital audio signal processing tools. Designers can quickly get a snapshot view of the entire audio system, including processing blocks and routing assignments, all at once.

Extensive Mix Matrix and Flexible Routing Within the DMP 128 Plus

The DMP 128 Plus and DMP 128 Plus C models feature an extensive 52x44 mix matrix allowing all 12 analog inputs, 8 aux inputs, 16 expansion bus inputs and 16 virtual bus returns to be discretely routed to any or all of the 8 analog outputs, 4 aux outputs, 16 expansion bus outputs and the 16 virtual bus sends. The DMP 128 Plus C V model features a 52x48 mix matrix, which includes 4 additional aux outputs to allow for routing of VoIP channels.

The DMP 128 Plus AT and DMP 128 Plus C AT models feature an even larger 84x44 mix matrix allowing all 12 analog inputs, 8 aux inputs, 48 Dante inputs and 16 virtual bus returns to be discretely routed to any or all of the 8 analog outputs, 4 aux outputs, 24 Dante outputs and the 16 virtual bus sends. The DMP 128 Plus C V AT model expands the mix matrix to 84x48, and the aux output count to 8, for VoIP routing.

Expanded Routing Across Two ProDSP Processors

The DMP EXP expansion port allows two DMP 128 Plus units to be linked together via a single shielded CAT 6 cable.  This creates a 16 channel bi-directional 24-bit/48 kHz high-resolution digital audio expansion bus between the two units, allowing expanded input and output signal management and routing capabilities.  This expanded 16x16 I/O channel transport between devices allows designers to create audio mixes with advanced I/O and signal management scenarios combining the capabilities of two DMP 128 Plus processors. The expansion port is also available on Extron DTP CrossPoint® matrix switchers. This allows a 16x16 I/O channel transport between the matrix switcher and the DMP 128 Plus to expand the number of available audio inputs for a DTP System, and to offer additional capabilities such as automixing, AEC - Acoustic Echo Cancellation with DMP 128 Plus C models, and VoIP - Voice over Internet Protocol with DMP 128 Plus C V and DMP 128 Plus C V AT models.

Dante Audio Networking

Dante-equipped DMP 128 Plus AT models provide scalable audio transport, with Dante Domain Manager support, over a local area network using standard Internet protocols. Each DMP 128 Plus AT sends out 24 channels of digital audio and can receive 48 channels over the network. A built-in four-port Gigabit switch also provides direct interconnection of multiple DMP 128 Plus AT processors, plus AXP 50 C AT and AXP 64 C AT expansion processors to create larger, cost-effective audio matrixes. Additionally, the DMP 128 Plus AT can be configured to support primary and redundant Dante audio networks, including AES67. Setting up a network of Extron digital audio processors requires Dante Controller software, in addition to the DSP Configurator Software.

FlexInput Channels on DMP 128 AT Models

Inputs 1 - 12 on Dante-equipped DMP 128 Plus AT models offer FlexInput capability to route a Dante channel in place of a local mic/line input. The flexible input selection enables the DMP 128 Plus AT to process audio from Dante-enabled devices, such as AXI 22 AT, AXI 44 AT, and AXI 22 AT D expansion interfaces, from anywhere on the Dante network. This allows incorporating the full range of DSP capabilities, including AEC, for incoming Dante channels.

Automixer

The DMP 128 Plus Series processors feature an automixer with gated and gain sharing modes that can manage up to eight groups of microphone signals. Gating threshold, signal level reduction, and timing parameters are user-adjustable per channel. This allows for fine-tuning to avoid the “chopped” sound characteristic of a traditional automixer when a mic is gated off. As the number of active microphones is doubled, system gain is automatically reduced, uniformly attenuating microphone signal levels to minimize audible changes in the overall sound and the possibility of feedback. For a natural sounding mic mix, the automixer also offers a gain sharing mode which allows all mics to remain on, while the gain for each mic is adjusted in real time to ensure a constant system gain.

Acoustic Echo Cancellation

The four DMP 128 Plus C models include Extron AEC for conferencing applications. AEC is essential for effective remote room-to-room conversations, ensuring clear, natural communication for all participants. These models include twelve independent channels of high performance AEC, as well as selectable noise cancellation. AEC processing can be challenged by conditions such as double-talk, when talkers from both ends are speaking simultaneously, and when near end talkers use wireless microphones. Extron AEC features advanced algorithms that deliver fast echo canceler convergence for optimal intelligibility, even in challenging conditions.

The DSP Configurator Software simplifies AEC and noise cancellation setup with a user-friendly interface that provides real-time metering for ERL - Echo Return Loss, ERLE - Echo Return Loss Enhancement, and TER - Total Echo Reduction levels. Guided alerts appear whenever ERL is outside of the optimal range for echo cancellation. Optional settings include fine adjustments for NLP - Non-Linear Processing to maximize AEC performance in acoustic environments with significant sonic reflections or reverberation.

VoIP - Voice over Internet Protocol Capability

DMP 128 Plus C V and DMP 128 Plus C V AT models include up to eight SIP 2.0 VoIP lines, with wideband codec support, that can be configured as individual extensions or with multiple call appearance channels to support local conferencing applications. Compatible with select VoIP systems, any single V model of the DMP 128 Plus Series can be used for a single VoIP line or as a VoIP farm for up to eight rooms.

Versatile Control Options

Each model is equipped with an ACP audio control port to support the use of Extron Audio Control Panels. ACP control is ideal for systems that do not require a full control system. The DMP 128 Plus can also be controlled and configured via RS-232 serial control, Ethernet control, or USB. Each model also includes digital I/O ports, which allow for external triggering such as mic activation and muting.

Features

Note: Dante® is a trademark of Audinate® Pty Ltd.

DANTE NETWORK PRODUCTS
  AXI 44 AT 4 Input, 4 Output Dante Audio Interface
  AXI 22 AT 2 Input, 2 Output Dante Audio Interface
  AXI 22 AT D 2 Input, 2 Output Dante Audio Interface - Decorator-Style Wallplate
  AXI 02 AT Two Output Dante Audio Interface
  AXP 64 C AT 6 Input, 4 Output Audio Expansion Processor with AEC and Dante
  AXP 50 C AT Five Input Audio Expansion Processor with AEC and Dante
  NetPA 502 AT Two Channel Audio Power Amplifier with Dante - 50 Watts Per Channel
  NetPA 1001-70V AT Mono 70 V Audio Power Amplifier with Dante - 100 Watts
OPTIONAL ACCESSORIES
  ACP 100 Audio Control Panel with Volume and 6 Control Buttons
US 2-Gang
  ACP 106 D Audio Control Panel with 6 Buttons
Decorator-Style
  ACP 106 EU Audio Control Panel with 6 Buttons
Flex55 and EU
  ACP 106 MK Audio Control Panel with 6 Buttons – MK
  CSC 6 Captive Screw to Category Cable Adapter
RELATED PRODUCTS
  DSP Configurator Software DSP Application Software

Specifications

DMP 128 Plus
Audio system
   Gain Balanced output: 0 dB, unbalanced output: -6 dB
   Frequency response 20 Hz to 20 kHz, ±0.2 dB
   THD + Noise <0.01%, 20 Hz to 20 kHz, at maximum level
   S/N 
      Analog In to Analog Out >107 dB, 20 Hz to 20 kHz, at maximum balanced output (unweighted)
      Analog In to Digital Out 110 dB, 20 Hz to 20 kHz, at full-scale output (unweighted)
      Digital In to Analog Out 115 dB, 20 Hz to 20 kHz, at maximum balanced output (unweighted)
   Crosstalk <-90 dB @ 20 Hz to 20 kHz, fully loaded
   Volume control -100 dB to 0 dB (control 0 to 100 in 0.1 dB steps)
Audio input
   Number/signal type 12 mono, mic/line, balanced/unbalanced, 8 with phantom power, 4 without phantom power
   Connectors (8) 3.5 mm captive screw, 3 pole, mono, balanced/unbalanced (with phantom power)
(2) 3.5 mm captive screw, 6 pole, mono, balanced/unbalanced (without phantom power)
   Impedance >10k ohms balanced/unbalanced
   Nominal level -60 dBV, +4 dBu, -10 dBV adjustable via input gain
   Maximum level +21 dBu at rated THD+N when mic 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 +80 dB in 0.1 dB steps, adjustable per input
   DC phantom power +48 VDC, +10% (inputs 1-8) can be switched on or off per input
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu; All nominal levels are at ±10%
Audio output
   Number/signal type 8 mono (or 4 stereo), line, balanced/unbalanced
   Connectors (4) 3.5 mm captive screw, 6 pole, mono, balanced/unbalanced
   Impedance 100 ohms balanced, 50 ohms unbalanced
   Gain error ±0.1 dB channel to channel
   Maximum level (Hi-Z) >+21 dBu balanced, >+15 dBu unbalanced
Audio processing
   A/D, D/A conversion 24-bit, 48 kHz
   AEC tail length >200 msec
   AEC convergence Up to 60 dB/sec
   Noise cancellation Up to 20 dB, software selectable
EXP port
   Transmission type Proprietary
   Connector 1 RJ-45
   Inputs 16 channels Rx
   Outputs 16 channels Tx
   Audio format Uncompressed, 24-bit, 48 kHz
   EXP cable Shielded CAT6 up to 10 meters (1 foot cable included)
USB audio port
   Connector 1 rear panel USB mini-B
   USB standards USB 2.0, high speed
AT ports (DMP 128 Plus AT models only) — audio transport
   Transmission type Dante/AES-67, software selectable
   Connectors 4 RJ-45, 4-port 1 Gbps switch to Dante interface
   Inputs 48 channels Rx
   Outputs 24 channels Tx
   Audio format Uncompressed, 24-bit, 48 kHz
   Latency Deterministic, based on user selections: 0.25 ms, 0.5 ms, 1.0 ms (default), 2.0 ms, 5.0 ms
VoIP Port (DMP 128 Plus V models only)
   Connector 1 RJ-45
   Data rate 10/100/1000 Base-T
   Signaling protocol Session Initiation Protocol (SIP), RFC 3261 and related RFCs
   Discovery protocol LLDP-MED (optional)
   Lines Up to 8 concurrent, independent extensions
   Codec support Various ITU, including wideband
   Default settings Link speed and duplex level = autodetected
IP address = 192.168.1.254
Subnet mask = 255.255.255.0
Default gateway = 0.0.0.0
DHCP = off
Control/remote
   Serial host control port 1 bidirectional RS-232, 3.5 mm captive screw, 3 pole
      Baud rate and protocol 38400 baud, 8 data bits, 1 stop bit, no parity
      Pin configuration 1 = Tx, 2 = Rx, 3 = G
   USB control port 1 front panel USB mini-B
      USB standards USB 2.0, high speed
   ACP control port (1) 3.5 mm captive screw, 4 pole, supports up to 8 panels
      Pin configuration 1 = +12V, 2 = +S, 3 = -S, 4 = G
      Power supply 6 Watts max
   Digital I/O (8) 3.5 mm captive screw, 4 pole
      Pin configuration 1 = In, 2 = G, 3 = Out 1, 4 = Out 2
      Voltage range Input = 0V to +12V
Output = 0V (low), 5V (high)
Software programmable
   Ethernet host port 1 RJ-45
      Data rate 10/100/1000 Base-T
      Protocol ARP, ICMP, IP, TCP, DHCP, HTTPS, Telnet
      Default settings Link speed and duplex level = autodetected
IP address = 192.168.254.254
Subnet mask = 255.255.255.0
Default gateway = 0.0.0.0
DHCP = off
   Web server Up to 200 simultaneous sessions
   Program control Extron DSP Configurator control/configuration program for Windows®
Extron Simple Instruction Set (SIS)
Microsoft® Internet Explorer®, Telnet
General
   Power supply Internal
Input: 100-240 VAC, 50-60 Hz
   Power consumption and thermal dissipation 
      DMP 128 Plus 
         Power consumption 29.0 W
         Thermal dissipation 66.4 BTU/hr
      DMP 128 Plus C 
         Power consumption 29.0 W
         Thermal dissipation 66.4 BTU/hr
      DMP 128 Plus AT 
         Power consumption 32.1 W
         Thermal dissipation 77.0 BTU/hr
      DMP 128 Plus C V 
         Power consumption 30.0 W
         Thermal dissipation 69.8 BTU/hr
      DMP 128 Plus C AT 
         Power consumption 32.1 W
         Thermal dissipation 77.0 BTU/hr
      DMP 128 Plus C V AT 
         Power consumption 32.4 W
         Thermal dissipation 78.0 BTU/hr
   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 Fan, right to left (as viewed from the front panel), variable speed, OFF when ambient temperature is less than 40 °C
   Mounting 
      Rack mount Yes, with included brackets
      Furniture mount Yes, with optional under-desk mounting kit
   Enclosure type Metal
   Enclosure dimensions 1.69" H x 17.40" W x 9.48" D (1U high, full rack wide)
(43 mm H x 442 mm W x 241 mm D)
(Depth excludes connectors)
   Product weight 4.5 lbs (2.1 kg)
   Regulatory compliance CE, c-UL, UL, CE, C-Tick, FCC Class A, ICES, VCCI, RoHS, WEEE
   Warranty 3 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice
(4030-D3)

Diagram








Panel Drawing

Panel Drawing
© 2019 Extron. Specifications are subject to change without notice.