Lightware MMX8x4-HT420M HDMI and TPS Matrix Switcher with Special Audio Inputs and Multiport Control Options - 91310042
Lightware MMX8x4-HT420M HDMI and TPS Matrix Switcher with Special Audio Inputs and Multiport Control Options - 91310042 is backordered and will ship as soon as it is back in stock.
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Product Overview
The Lightware MMX8x4-HT420M is a standalone 8x4 matrix switcher from the MMX conference room series, with eight mixed inputs (HDMI 1.4 and TPS2/HDBaseT) and four TPS2 outputs, combined with dedicated balanced analog audio I/O and a full multi-port control suite. Its asymmetric 8x4 crosspoint — more inputs than outputs — is purpose-designed for rooms where multiple presentation sources must be routed to a focused set of displays, such as a training room with one primary display and one confidence monitor, or a boardroom driving a videowall and a ceiling projector from multiple sources. AV integrators specifying a 8x4 HDBaseT HDMI matrix with analog audio and conference room automation will find this model correctly sized for its application.
Product Description
The MMX8x4-HT420M routes 4K/UHD signals (30Hz RGB 4:4:4, 60Hz YCbCr 4:2:0) with full HDCP and 3D support. TPS2 outputs extend HDMI 1.4 over single CAT5e/CAT6/CAT7 cables at distances up to 100m (CAT5e AWG24) and 170m in Long Reach mode for Full HD (CAT7 AWG23). PoE 48V is available on all TPS I/O ports for extender powering. Balanced analog audio connectors at both input and output positions (5-pole Phoenix) provide localized audio management within the matrix itself.

The built-in Event Manager delivers automated room control — display power sequences, input switching on signal detection, screen control via relay — without an external control processor. Relay outputs, GPIO, RS-232 ports, serial/IR ports, and IR ports provide the same control port density as the full MMX8x8-HT series, including Ethernet injection via TPS for LAN extension to remote endpoints. Advanced EDID Management handles source resolution management per input port.

Key Features
- 8x4 Asymmetric Crosspoint — Eight inputs, four TPS2 outputs; optimized for presentation-focused room designs with fewer displays than sources.
- Mixed HDMI and TPS2 Inputs — Accepts HDMI 1.4 and HDBaseT sources in the same input matrix.
- 4x TPS2 Outputs — All outputs via HDBaseT, distributing video, audio, Ethernet, and RS-232 over single CAT cable to displays.
- 4K/UHD Support — 30Hz RGB 4:4:4 and 60Hz YCbCr 4:2:0 with HDCP and 3D.
- Up to 170m TPS Extension — Long Reach mode at Full HD over CAT7 AWG23; 100m at 4K 30Hz.
- PoE 48V on All TPS Ports — Remote extender powering without external injectors.
- Balanced Analog Audio I/O — 5-pole Phoenix connectors at input and output positions for audio embedding and de-embedding.
- Built-in Event Manager — Automated room switching and control logic without external control processor.
- 2x RS-232 + 4x IR + Relay + GPIO — Full control port suite for display management, screen control, and room integration.
- Ethernet via TPS — LAN extension to remote room endpoints over the same CAT cable as video.
- Advanced EDID Management — Per-input EDID emulation with factory and user-defined profiles.
Typical Applications
- Conference room
- Boardroom
- Training room
- All-hands room
- House of worship
Technical Specifications
| Specification | Value |
|---|---|
| Matrix Size | 8x4 (8 inputs, 4 outputs) |
| Input Types | HDMI 1.4 + TPS2 (HDBaseT) |
| Output Type | 4x TPS2 (HDBaseT) |
| Max Resolution | 4K/UHD 30Hz RGB 4:4:4; 4K 60Hz YCbCr 4:2:0 |
| 3D Support | Yes |
| Max TPS Distance (Long Reach, CAT7 AWG23) | 170 m at Full HD |
| Max TPS Distance (Auto, CAT7 AWG23) | 120 m |
| Max TPS Distance at 4K 30Hz | 70–100 m |
| PoE | 48V on all I/O TPS ports |
| Balanced Audio | 5-pole Phoenix, input + output positions |
| RS-232 Ports | 2x bidirectional |
| Serial/IR Ports | 2x |
| IR Ports | 4x |
| Relay Outputs | 4x |
| GPIO | 6x GPIO + 5V + GND |
| Ethernet via TPS | Yes |
Competitor Comparison
| Criteria | Lightware MMX8x4-HT420M | Crestron DM-MD8X4-CPU3 | Atlona AT-UHD-CLSO-824 | Extron DXP 84 HDMI 4K |
|---|---|---|---|---|
| Matrix Size | 8x4 with all-TPS2 outputs | 8x4 or custom card config | 8x4 HDMI + HDBaseT outputs | 8x4 HDMI |
| HDBaseT Outputs | All 4 outputs are TPS2/HDBaseT with PoE | DM fiber/CAT card config | HDBaseT TX on outputs | HDMI only (no built-in HDBaseT) |
| Analog Audio | Built-in balanced I/O at matrix ports | Requires audio card or external DSP | Analog de-embed per output | Analog de-embed per output |
| Built-in Control | Event Manager + RS-232 x2, IR x4, Relay x4, GPIO | Requires Crestron control processor | RS-232 + Ethernet only | RS-232 + Ethernet + IR |
| PoE | Built-in 48V on all TPS ports | PoE via DM card | PoE on HDBaseT outputs | No PoE |
| TPS Distance | 170m Long Reach Full HD; 100m at 4K 30Hz | 100m per DM spec | 100m HDBaseT | No HDBaseT |
Frequently Asked Questions
- Why choose an 8x4 matrix instead of an 8x8?
- The 8x4 configuration is cost-appropriate for rooms with up to four displays and up to eight sources. Paying for output capacity that won't be used in a fixed room design adds unnecessary cost. The MMX8x4-HT420M delivers the same control port density and feature set as the 8x8 models at the correct output count for smaller display environments.
- Are all outputs HDBaseT or are there HDMI output options?
- All four outputs on the MMX8x4-HT420M are TPS2 (HDBaseT). For mixed HDMI and TPS2 output configurations in an 8x4 frame, consult with Creation Networks on alternative MMX or MX series configurations.
- What TPS extenders work with the MMX8x4-HT420M outputs?
- All Lightware HDBaseT receivers (HDMI-TPS-RX86, RX87, RX96, RX97 series, and others) and HDBaseT-compliant third-party receivers are compatible. HDBaseT-compliant displays with built-in receivers also connect directly.
- Is audio de-embedding available at the TPS2 output ports?
- Yes. The balanced analog audio connectors adjacent to output positions allow de-embedding of HDMI-embedded audio from the TPS2 output signal, providing analog audio for room amplifiers or DSP inputs without a separate audio processor at each display location.
- Can the Event Manager handle display power sequencing?
- Yes. The Event Manager can be configured to send RS-232 power-on commands to connected displays and projectors in sequence when a source signal is detected, and send power-off commands after a configurable no-signal timeout — automating the full room power cycle without external control processor programming.
- Where can I buy the MMX8x4-HT420M?
- Available through Creation Networks at creationnetworks.net.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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