RTS LH-300 – Intercom & Commentary Units / Accessories

The RTS LH300 is a passive lightweight 1-ear headset with XLR5M connectors. It does not contain active electronics or embedded control logic. Integration depends entirely on the RTS frame or base station driving it—typically an RTS matrix, keypanel, or Zeus/Intercom mainframe. Verify your control system supports XLR5M input; older RTS equipment may require passive audio distribution only. The headset itself carries no protocol; the host system determines compatibility with RTS proprietary signaling, Dante, or AES67.

The LH300 is explicitly a 1-ear headset design, making it ideal for talent requiring ambient awareness or mixed-source monitoring. XLR5M is the standard RTS analog headset connector carrying balanced audio and DC bias lines. Impedance and frequency response depend on the driving output; consult your RTS frame's headset output specs. For critical applications, measure impedance matching with your mainframe to avoid level loss or crosstalk, especially in multi-user OB setups.

The product note indicates a package quantity of 2 units per order. Confirm with your supplier whether this is a fixed 2-pack or if single-unit and bulk options are available. If you need more than 2 headsets for a larger OB van or studio expansion, clarify pricing and lead time for additional quantities before committing to a purchase order.

Detailed cable length and strain-relief specifications are not provided in the verified data. These are critical for OB van routing and durability. Contact the manufacturer or reseller for cable gauge, length, and replacement-cable availability. Verify whether the XLR5M connector is molded (non-replaceable) or terminated (serviceable in the field). For mission-critical setups, confirm Mean Time Between Failures (MTBF) and stock spare cables before deployment.

Environmental robustness, IP rating, temperature range, and maximum SPL handling are not specified in available data. The LH300's lightweight design suggests portable use, but outdoor rating (splash/dust resistance) must be verified with the manufacturer. For outdoor broadcast, concert, or sports events, confirm IP class, operating temperature limits, and whether foam windscreens are compatible and included or sold separately.

RTS XLR5M headsets are generally cross-compatible on the same RTS frame or base station, but this depends on the frame's headset input design and user count. The LH300's 1-ear form factor does not prevent parallel operation with dual-ear units on shared channels. However, verify your specific RTS mainframe supports simultaneous mixed headset types and that input impedance scaling does not degrade audio quality under load. Test in your intended configuration before full deployment.

The LH300 is a passive analog headset with no internal amplification or battery. It relies on DC bias and audio drive from the RTS intercom frame's headset output. Power consumption is negligible. Verify your RTS frame provides the correct bias voltage (typically 4–5 V DC on pin 5 of XLR5M); incorrect bias can cause no audio or intermittent signal. Confirm frame output impedance and maximum load capacity when operating multiple headsets in parallel.

The RTS LH300 is an analog XLR5M headset. It is not compatible with IP/Dante-native systems without an intermediate converter or hybrid interface. Modern RTS systems increasingly support IP (ST 2110, Dante), but the LH300 itself carries no digital interface. If your facility uses RTS Omneo or Dante-based frames, confirm whether an analog-to-IP or headset-input module is available, or plan to upgrade headsets to digital-native models for that deployment.

Accessory compatibility is not detailed in current specs. The XLR5M connector is standard across RTS headsets, so third-party boom arms designed for RTS may fit. However, verify mechanical fit, especially for 1-ear vs. dual-ear headframes. Request a compatibility matrix from the reseller for boom arms, windscreen foam, and protective cases. Budget for spares (cables, ear cushions, strain-relief boots) and confirm lead times for field replacements on long-term OB contracts.

Yes. Our used and ex-demo units undergo a full functional inspection — sensors, video outputs, control signals, optics and mechanics — including a colorimetry and sensitivity test. Each product is tested by our technicians and comes with a 90-day warranty. Contact us for the specific warranty terms of the unit you are interested in.