The Sennheiser EW 300 G4-HEADMIC1-RC is an easy-to-use rackmount wireless headset microphone system geared for business and educational applications. It offers professional-level features for enhanced reliability and control, including variable RF power, an exceptionally wide tuning range, Ethernet networking for multichannel setups, and an intuitive interface with an OLED display and jog wheel. The system delivers high-quality, reliable audio to presenters, meeting participants, educators, and lecturers working in conference centers, schools, and universities.

The EW 300 G4-HEADMIC1-RC includes a true-diversity, half-rack receiver housed in a rugged, full-metal chassis. The receiver's auto-scan function searches an 88 MHz UHF tuning range with 3520 selectable frequencies available, seeking out a clean, interference-free channel for your audio transmission. The high-contrast OLED display with automatic dimming, along with a convenient jog wheel allow you make quick adjustments, even in low-light situations.

The system comes with a silver SL Headmic 1 omnidirectional headset microphone and a remote-controllable SK 300 G4-RC bodypack transmitter for hands-free operation. The headset's lightweight, comfortable, and flexible design is discreet, stable, and easy to place over the ears. The transmitter provides up to 8 hours of operation on two AA batteries, with a selectable 10/30/50mW RF power output for overcoming interference in difficult RF environments. The transmission range is up to 330'.

The Ethernet connection on the receiver supports Wireless Systems Manager (WSM) and Sennheiser Control Cockpit software for management, monitoring, and advanced frequency coordination in multichannel setups. Up to 32 wireless mics can operate simultaneously in the same space.

The EW 300 G4-HEADMIC1-RC is backward-compatible with all previous evolution systems. You can mix and match G4/G3/G2/G1 receivers or bodypack, handheld, and plug-on transmitters. It is also compatible with EW 100 and EW 500 systems.

For Presenters and Educators    Discreet SL Headmic 1 Omni Headset Mic    Remote-Ready Bodypack Transmitter    True-Diversity Rackmount Receiver    3520 Auto-Scan Frequencies    Selectable 10/30/50mW RF Power    High-Contrast OLED Display    Ethernet for Control Cockpit Software    8-Hr AA Batteries    Expandable to 32 Mic Channels/330' Range

The SL Headmic 1 headset microphone features a forgiving omnidirectional pickup pattern and is optimized for high speech intelligibility.

The headset plugs into the locking 3.5mm connection on the compact SK 300 G4-RC bodypack transmitter. The adjustable input sensitivity on the transmitter accommodates mic levels ranging from booming voices to quiet speech.

The rugged, all-metal SK 300 G4-RC transmitter is equipped with a 2.5mm jack to connect the RMS 1 remote mute switch (available separately). The switch adds easy-access push-to-talk and push-to-mute functions to your transmitter.

The transmitter features a programmable mute function and can be locked out to prevent accidental changes during a performance. A backlit LCD displays essential information and provides fast menu access. The transmitter syncs to the receiver via infrared with a quick press on the Sync button.

The SK 300 G4-RC is powered via two AA batteries or a rechargeable BA 2015 Accupack battery (available separately). Side contacts allow for recharging the Accupack without removing it from the transmitter-requires the L 2015 quick-charging unit (available separately).

The robust, metal EM 300-500 G4 receiver offers a high-contrast, black-&-white OLED display. The display uses a streamlined menu system with a jog wheel and dedicated Escape button for quick menu navigation. The display also shows battery status of the associated transmitter.

The system features 20 fixed frequency banks with up to 32 compatible frequency presets and 6 user banks with up to 32 user-programmable frequencies.

To prevent interference, the EM 300-500 receiver's true-diversity reception compares incoming signals on two independent receiver circuits to ensure optimal RF quality.

The built-in equalizer enables you to change the frequency response of the output signal; you can reduce the bass range and boost the treble range. The receiver also offers an adjustable output level range of 48 dB to match the audio input of your mixing board or PA system.

A headphone output with volume control is conveniently located on the front panel, allowing you to monitor your audio signal.

The back panel houses a balanced XLR output as well as an unbalanced 1/4" output. A kit is included for rackmount installation. The unit comes with a universal power supply and EU, US, UK, Korea, Australia, and China adapters.

For public address applications, the EM 300-500 G4 receiver can be integrated directly into the LSP 500 PRO wireless speaker system.

The receiver features an Ethernet (RJ45) port for network-based remote monitoring and control using the Sennheiser Wireless System Manager (WSM) software (free download available separately). Using your Mac/Windows computer, the software allows you to quickly coordinate frequencies in multichannel setups, display audio levels at the transmitter, battery status, and more.

Alternately, you can use the Sennheiser Control Cockpit software (free download available separately), designed to make the daily routines and workflows associated with the use of large wireless microphone setups in corporate and campus settings far easier. Wireless systems can be centrally controlled and monitored in real time, easily via a web browser on a smartphone, tablet, or laptop.

The detachable antennas with BNC sockets allow you to create a larger system using up to four EM 300-500 G4 receivers connected to a single pair of remote antennas. This setup requires the ASA 214 active antenna splitter (available separately).

Adding a pair of A 1031-U omnidirectional antennas or a pair of A 2003 UHF directional antennas increases the range of your system and offers increased protection against interference.

Sennheiser offers a variety of lavalier, headset, and handheld microphone options to adapt your EW system as your needs evolve.

• The discreet ME 2-II lavalier microphone provides exceptional clarity in spoken-word applications.
• The SKM 300 G4 handheld transmitter is available with a multitude of mic capsule options for presenters and performers who prefer the flexibility of a handheld microphone.

Related Questions and Answers

Q: 1. why two transmitters if you can only use one at a time ?

A: The Sennheiser EW 500 FILM G4 Camera-Mount Wireless Combo Microphone System gives you the option of either using the Sennheiser SK 500 G4 Wireless Bodypack Transmitter and Sennheiser MKE 2 Gold Series Subminiature Omnidirectional Lavalier Microphone, or using the Sennheiser SKP 500 G4 Pro Wireless Plug-On Transmitter, which can be used with either dynamic mics or condenser mics that require phantom power - any microphone with XLR output, such as a handheld mic or shotgun style mic. The SKP 500 G4 can also be used to send audio from a mixer's XLR output to the receiver. Since the Sennheiser EK 500 G4 Pro Wireless Camera-Mount Receiver has a single channel, only one transmitter can be used at a time.

Q: 2. Is the G4 (470-558MHz) compatible with an Ek100 G3 receiver (516-558MHz)?

A: Hi Brite - the two series are absolutely compatible as long as they are in the same range. As the AW+ range (470-448 MHz) transmitter extends beyond the lower frequencies of the A range EK 100 G3, you won't get the full benefit the transmitter is capable of for tuning, but you'll be able to scan with your EK 100 G3 and sync to the new SK 300 G4. Please note that the frequency presets will be different, though this isn't an issue when it comes to scan/sync capabilities.

Q: 3. If I purchase a Sennheiser SKP 500 G4 Pro separately in the future, can it used with this EW 512 G4 model?

A: Yes, the Sennheiser SKP 500 G4 Pro plug-on transmitter is compatible for use with the EK 500 G4 Pro receiver that is included with the EW 512P G4 wireless lavalier system as long as both components operate on the same frequency band. You will need to purchase an SKP 500 G4 transmitter on the same frequency band as the EW 512P G4 system. The EK 500 G4 receiver can be used with only one transmitter at a time so you will have the option of using it with either the SK 500 G4 bodypack transmitter that is included in the EW 512P G4 system or using the SKP 500 G4 plug-on transmitter.

Q: 4. Can you add additional wireless transmitter mics to the camera mounted receiver ? If so what models are compatible ?

A: Each wireless transmitter needs it's own corresponding receiver, so in order to add an additional mic using the Sennhieser G4 series, you would need an entire additional system.

Q: 5. Is this dual channel to work with lav and plug on at the same time

A: This is a single channel system and can only handle one transmitter per channel.

Q: 6. How much difference does 30mw vs 50 mw have on reliability, reception and range?

A: Every milliwat may count when tolerances are very close. It sometimes can be a game of inches.

Q: 7. How does this compare to the Sony UWPD16/14 Wireless Microphone System?

A: They are both very popular systems and offer excellent quality for professional applications and commercial applications.

Q: 8. What is the correct frequency version for Chicago IL?

A: Both frequency ranges offered for the Sennheiser EW 512P G4 Camera-Mount Wireless Omni Lavalier Microphone System appear to have available channels for the Chicago, Illinois area, however there may be slightly more available on the GW1: 558-608MHz range.

Q: 9. Headphone jack?

A: This is the 512P G4, yes, has a headphone jack to monitor at the receiver.

Q: 10. How does this receiver compare to the Sennheiser EK 500 G4 Diversity Receiver Freq.Range Aw+ 470-558 MHz?

A: This receiver is designed for rack mount or table top applications. This allows the receiver to be ac powered from a wall outlet versus the need for batteries. As well, this unit has dual bnc antennas which can be attached to antenna distribution, useful when using a large amount of wireless in a venue. This unit is really meant for live sound or studio applications where the receivers will be stationary and in a rack. The EK500 is designed for portability.