DM-NAX-4ZSA-50 – DM NAX® 4+1 Zone Streaming Amplifier
The Crestron DM-NAX-4ZSA-50 is a next generation Audio-over-IP (AoIP) amplifier with Gallium Nitride (GaN) Class D technology that fits up to 50 W of output power per channel into a half-width 1RU space. Streaming services are built-in with media player access available for each output zone.
| Audio | |
| Input Signal Types | 2 stereo analog (RCA); 2 digital S/PDIF (2 TOSLINK and 2 Coaxial); Up to 5 stereo DM NAX or AES67 audio-over-IP streams; Up to 5 stereo cloud-based media streams from streaming service providers |
| Output Signal Types | 4 stereo speaker-level amplified outputs; 1 stereo analog line-level output; Up to 9 stereo DM NAX or AES67 audio-over-IP streams |
| Sampling Rates and Bit Depths | Digital Input (Coaxial): Up to 192 kHz, 24‑bit; Digital Input (Optical): Up to 192 kHz, 24‑bit; Media Players: Up to 192 kHz, 24‑bit |
| Source Compensation | ±10.0 dB per input |
| Input Monitoring | Source Signal Detect |
| Output Power | 50 W per channel at 4 or 8 Ohms |
| Amplifier Monitoring | Over Current, Over/Under Voltage, Over Temperature, DC Offset, Clipping |
| Frequency Response | 20 Hz to 20 kHz ±0.5 dB |
| THD | 0.006% |
| S/N Ratio | 110 dB digital in; 108 dB analog in |
| Stereo Separation | 95 dB @ 1 kHz, 8 Ohm; 90 dB @ 1 kHz, 4 Ohm |
| Zone Separation | 100 dB @ 1 kHz, 8 Ohm; 95 dB @ 1 kHz, 4 Ohm |
| Zone Volume Level Control | -80.0 to +20.0 dB, adjustable from 0% to 100% plus mute |
| Bass Control | ±12.0 dB |
| Treble Control | ±12.0 dB |
| Loudness Compensation | On/Off |
| Dynamic Range Control | Off/Low/Medium/High |
| Balance Control | Left/right adjustable |
| Zone Configuration | Stereo Single Ended; Mono Single Ended |
| Power Limiting | Configurable 5 to 50 W @ 4 or 8 Ohms |
| Tone Profiles | Flat, Classical, Jazz, Pop, Rock, Spoken Word |
| EQ Filter Types | EQ, High Pass, Low Pass, Treble Shelf, Bass Shelf, Notch |
| EQ Center Frequency | 10 Hz to 20 kHz per band |
| EQ Gain | -40.0 to +20.0 dB per band |
| EQ Bandwidth | 0.1 to 4.0 octaves per band |
| Bus Volume Offset | ±12.0 dB per zone for output bussing |
| Communications | |
| Ethernet | For control, AoIP, and/or console; 100/1000 Mbps, auto-switching, auto-negotiating, auto-discovery, full/half duplex, DHCP |
| Connectors | |
| SPEAKER ZONES 1-4 | (4) 4-pin 5.08 mm detachable terminal blocks; Stereo speaker-level audio outputs; Maximum Wire Size: 12 AWG |
| LINE OUT 5 | (2) RCA female comprising (1) unbalanced stereo line‑level audio output; Output Impedance: 100 Ohms; Maximum Output Level: 2Vrms |
| DIGITAL INPUT 1 | (1) RCA female; S/PDIF coaxial digital audio input; Input Impedance: 75 Ohms |
| DIGITAL INPUT 2 | (1) JIS F05 female TOSLINK® optical fiber connector; S/PDIF optical digital audio input |
| ANALOG INPUTS 3-4 | (4) RCA female comprising (2) unbalanced stereo line-level audio inputs; Input Impedance: 10 kOhms; Maximum Input Level: 2Vrms |
| ETHERNET 1-2 | (2) 8-pin RJ-45 connectors, female; 100BASE-TX/1000BASE-T Ethernet port; Green LED indicates Ethernet link status; Flashing amber LED indicates Ethernet activity |
| 100-240 VAC 1.0-0.4A 50/60HZ | (1) 100‑240V~50/60Hz Universal AC; IEC 60320 C14 main power inlet, mates with removable power cord (included) |
| Controls and Indicators | |
| PWR | (1) LED; Amber indicates that the device is booting; White indicates that the device is switched on with audio passing; Red indicates that the device is in standby mode |
| LAN | (1) White LED; Indicates that the device has a valid IP address |
| NAX | (1) White LED; White indicates that audio-over-IP traffic is passing in or out of the DM NAX unit |
| SOURCE 1-4 | (4) LEDs; White indicates signal presence on the specified input/source; Red indicates there is clipping on the specified input/source |
| ZONE 1-5 | (5) LEDs; White indicates there is audio output on the indicated zone; Red indicates a fault due to clipping, over current, over temperature, or low voltage |
| SETUP | (1) Push button: Pressing and holding the SETUP button for 15 seconds with power supplied clears network settings and restores the default DHCP mode; To perform a factory restore, press and hold the SETUP button with power disconnected, then connect the power supply and continue to hold the SETUP button for 30 seconds; (1) LED, illuminates red when the button is pressed, flashes red when reset has been initiated |
| Power | |
| Main Power | 1.0-0.4A @ 100‑240VAC, 50/60 Hz |
| Power Consumption | 50 W (all channels driven at 1/8 output power, 8 Ohms) |
| Environmental | |
| Temperature | 32° to 104°F (0° to 40°C) |
| Humidity | 10% to 90% RH (non‑condensing) |
| Heat Dissipation | 85 BTU/hr (all channels driven at 1/8 output power, 4 Ohms) |
| Construction | |
| Chassis | Metal, black and silver finish, vented front and rear panels |
| Mounting | 1 RU rack-mountable |
| Dimensions | |
| Height | 1.72 in. (44 mm) |
| Width | 8.66 in. (220 mm) |
| Depth | 10.97 in. (279 mm) |
| Weight | |
| 4.15 lb (1.88 kg) | |
| Compliance | |
| Regulatory Model: M202123001 Intertek® Listed for US & Canada, CE, IC, FCC Part 15 Class B digital device | |
The Crestron DM-NAX-4ZSA-50 is a next generation Audio‑over‑IP (AoIP) amplifier that puts Crestron multiroom audio distribution on the network. It provides four amplified stereo speaker outputs and one analog line-level stereo output for a total of five zones. A dedicated streaming service player for each zone enables complete freedom to stream different content in every zone.
DM NAX™ is built on AES67 standards with additional ease of configuration via a web interface, SIMPL Windows, C#, and/or a RESTful API. It is compatible with DM NVX® through the AES67 secondary audio stream. DM NAX is also compatible with third-party AES67 solutions and Dante® via the compatibility mode enabled through Dante Controller. Full DSP capabilities are available on the line and speaker outputs.
Audio-over-IP
The DM-NAX-4ZSA-50 sends and receives DM NAX and AES67 encoded audio over a standard IP network. A single DM NAX system can handle audio distribution between 32 DM NAX devices and supports up to 256 audio output zones. DM NAX devices can seamlessly pull and distribute the audio from DM NVX sources.
Streaming and Casting Services
A dedicated streaming service player is built-in for each zone, supporting AirPlay® 2, Internet Radio, Spotify Connect™, Pandora®, SiriusXM®1, TIDAL™, Deezer®, Qobuz®, SOUNDMACHINE®, Podcasts and more. The DM-NAX-4ZSA-50 delivers streaming, routing, distribution, and amplification in a single device. Streams can be routed to other non-streaming AoIP devices.
Chimes
A library of chimes is built into the unit. Chimes can be assigned to different zones to help identify them. Whenever a chime is triggered, the zone audio will duck or pause, so the chime can be clearly heard over active media until the chime concludes.
Digital Signal Processing (DSP)
DSP capabilities such as bass and treble boost and cut, loudness, adjustable delay, speaker protection and limiting, tone profiles, a full 10-band EQ per output, and an option to have line output as a fixed or variable level with or without DSP applied are available. Speaker profiles for first and third party speaker models are built in to simplify output DSP tuning.
Encoder and Decoder Functionality
The DM-NAX-4ZSA-50 can operate as a network AoIP encoder and decoder. The local input sources on one amplifier can be sent as AoIP streams to DM NAX, Dante, or AES67 capable devices. Simultaneously, the DM-NAX-4ZSA-50 can receive AoIP streams from these same devices and decode them for local output.
Modular Design
The DM-NAX-4ZSA-50 is housed in a half‑width rack‑mountable form factor that can be installed individually or ganged together in a single rack space. The amplifier is high-density stackable with other Crestron DM NAX or X-Series amplifiers, allowing multiple units to be installed vertically in an equipment rack without needing extra ventilation space. Rack mount parts are included, so no additional mounting accessories or rack shelves are required.
Whether mounting in a rack or placing on a shelf, it is easy to combine two amplifiers into a single, full rack-width assembly.
Gallium Nitride (GaN) Amplification
The DM-NAX-4ZSA-50 is the first Crestron amplifier to feature GaN Class D technology. GaN amplification allows higher output power to fit into small form factors without sacrificing efficiency or audio performance. The DM-NAX-4ZSA-50 is capable of up to 50 W of amplifier output power per channel in a half-width 1RU housing that matches the depth of the DM‑NAX‑AMP‑X300.
Key Features
- Audio-over-IP (AoIP) amplifier
- Built-in streaming services support
- Full DSP capabilities
- Gallium Nitride (GaN) Class D amplification
- 50 W of output power per channel
- Provides four amplified output zones and one additional line-level output zone
- 1 RU high, half-rack width modular form factor
- Interoperable with Dante® audio networking devices via AES67 compatibility
- Built-in chime support
- Streamlined configuration through a web interface
- Seamless Crestron system integration with SIMPL Windows programming