Sennheiser SK 500 G4 Wireless Bodypack Transmitter

Product Overview

The Sennheiser SK 500 G4 is a professional UHF bodypack transmitter built for demanding wireless audio applications where extended range and RF robustness are non-negotiable. Part of the Evolution Wireless G4 500-series, it pairs with the EM 300-500 G4 receiver and accepts a wide range of lavalier microphones, headset microphones, or instrument cables via its locking 3.5 mm connector. The SK 500 G4 operates across a 50 MHz UHF tuning bandwidth with 2,000 selectable frequencies and offers three selectable RF power output levels to overcome interference in complex RF environments. Backward-compatible with all previous Evolution Wireless generations, it is an outstanding choice for live touring, broadcast, theater, and any application that demands professional-grade RF performance from a compact bodypack form factor.

Product Description

The Sennheiser SK 500 G4 bodypack transmitter is engineered for professionals who need reliable wireless transmission in challenging RF environments. Its all-metal housing is both rugged and comfortable to wear, making it ideal for performers and presenters who spend extended periods on stage or in front of cameras. Three selectable RF power levels — 10, 30, and 50 mW — allow you to balance transmission range against battery life and RF footprint, giving you the flexibility to adapt to venue conditions on the fly.

Frequency coordination is fast and straightforward thanks to the built-in infrared sync function: engage the Sync mode on the compatible EM 300-500 G4 receiver and the transmitter locks to the same frequency in seconds. The backlit LCD display provides at-a-glance monitoring of key parameters including frequency, battery status, and RF output level. A programmable mute function with lockout capability prevents accidental muting during a performance, while the adjustable mic/line input level accommodates the full range of compatible microphones and instruments.

Battery life of up to 8 hours on two standard AA cells keeps the SK 500 G4 running through full touring days and long broadcast sessions without interruption. For users who prefer rechargeable power, the transmitter accepts the optional BA 2015 Accupack, which can be recharged in place via side contacts using the optional L 2015 quick-charge unit — no removal required between sessions. The SK 500 G4 is fully backward-compatible with G1, G2, G3, and G4 Evolution Wireless receivers and transmitters, protecting your investment in existing Sennheiser wireless infrastructure. It also integrates seamlessly into EW 300 and EW 500 systems, making it a versatile addition to any professional wireless ecosystem.

Key Features

• 50 MHz UHF Tuning Bandwidth — 2,000 selectable frequencies provide maximum flexibility for frequency coordination in crowded RF environments.
• Selectable 10/30/50 mW RF Output — Three power levels let you optimise range versus battery life and RF footprint for each venue and application.
• Locking 3.5 mm Input Connector — Secure, non-slip connection for lavalier, headset, or instrument input; prevents accidental disconnection during performance.
• Infrared Sync — One-touch frequency synchronisation with the EM 300-500 G4 receiver eliminates manual frequency programming.
• Up to 8 Hours Battery Life — Powered by two standard AA batteries for full-day operation without mid-show battery changes.
• Rechargeable BA 2015 Accupack Compatible — Optional rechargeable battery charges in situ via side contacts with the optional L 2015 quick-charger.
• Backlit LCD Display — Clear at-a-glance readout of frequency, battery level, and RF output in any lighting condition.
• Programmable Mute with Lockout — Prevents accidental muting during live performance while retaining convenient manual mute access when needed.
• Adjustable Mic/Line Input Level — Accommodates a wide range of microphone and instrument signal levels without additional external gain staging.
• All-Metal Rugged Housing — Durable construction withstands the rigors of daily touring and broadcast use.
• Backward-Compatible with G1–G4 and EW 300/500 — Integrates into existing Sennheiser Evolution Wireless infrastructure without requiring a full system upgrade.

Typical Applications

• Live touring and concert performance
• Broadcast television and live news production
• Live theater and musical productions
• Corporate presentations and conference keynotes
• House of worship live sound
• Film and episodic television production sound
• Sports broadcasting and sideline reporting

Technical Specifications

Frequently Asked Questions

Q: Which receiver does the SK 500 G4 work with?

The SK 500 G4 is designed to work with the Sennheiser EM 300-500 G4 receiver. It is also backward-compatible with previous Evolution Wireless receivers from the G1, G2, and G3 generations, as well as EW 300 and EW 500 series systems.

Q: Is the SK 500 G4 sold with a microphone?

No. The SK 500 G4 is a transmitter-only product and does not include a microphone. It is compatible with a wide range of Sennheiser lavalier and headset microphones, including the MKE 1 and ME 2 series. Instrument adapter cables are also available separately.

Q: What is the difference between the SK 500 G4 and the SK 100 G4?

The SK 500 G4 offers a higher maximum RF output (50 mW vs. 30 mW on the SK 100 G4), a wider 50 MHz tuning bandwidth, and 2,000 selectable frequencies compared to the SK 100 G4's narrower tuning range. The 500-series is intended for applications requiring extended range and more sophisticated frequency coordination.

Q: What do the AW+ and GW1 frequency band variants mean?

AW+ and GW1 refer to specific UHF frequency ranges licensed for use in different regions. AW+ (470–558 MHz) is commonly used in North America and many other markets, while GW1 covers a different regional band. Select the variant appropriate for your country’s RF regulations.

Q: Can I use rechargeable batteries in the SK 500 G4?

Yes. The SK 500 G4 accepts the optional Sennheiser BA 2015 Accupack rechargeable battery. Uniquely, this battery can be recharged in situ via the transmitter's side contacts using the optional L 2015 quick-charge unit — no removal necessary.

Q: How does the infrared sync function work?

Point the SK 500 G4 at the IR port on the EM 300-500 G4 receiver and engage the Sync function. The transmitter and receiver automatically negotiate and lock to the same frequency within seconds, eliminating manual frequency programming.

Q: Can I lock the mute button to prevent accidental activation?

Yes. The SK 500 G4 features a programmable mute lockout function that prevents accidental muting during a live performance. The lockout can be enabled or disabled via the transmitter menu.

Q: What is the transmission range of the SK 500 G4?

At maximum 50 mW RF output, the SK 500 G4 is capable of transmission ranges up to approximately 330 feet (100 metres) in line-of-sight conditions. Actual range will vary depending on RF environment, obstructions, and antenna placement.