The Sennheiser EW 100 G4-Ci1 is an easy-to-set-up rackmount wireless system that brings reliable high-quality, wireless sound to guitar and bass players performing in small to medium-sized venues including concert stages, houses-of-worship, theaters, and clubs.

The EW 100 G4-Ci1 features a true diversity, half-rack receiver housed in a rugged, full-metal chassis. The receiver's auto-scan function searches a wide 42 MHz UHF tuning range with 1680 selectable frequencies available, seeking out a clean, interference-free channel for your audio transmission. The onboard guitar tuner is an added convenience for musicians.

This system includes a Ci 1 cable that connects your instrument to the lightweight bodypack transmitter. The transmitter provides up to 8 hours of operation on two AA batteries, with a fixed 30mW RF power output and a transmission range up to 330'. Up to 12 wireless channels can operate simultaneously in the same space, with the receivers linked together for fast, multi-channel frequency setup.

The EW 100 G4-Ci1 is backward-compatible with 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 300/500 systems.

For Presenters and Performers    Senal OLM-2 Omni Lav Mic    Lightweight Bodypack Transmitter    True-Diversity Rackmount Receiver

The 4' long Ci 1 cable connects the 1/4" output of your guitar or bass to the bodypack transmitter's locking 3.5mm input.

The adjustable input sensitivity on the transmitter accommodates instruments with passive and active electronics, and even line-level audio.

The rugged, all-metal 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 100 G4 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 100 receiver offers a high-contrast, black and white LCD. The display uses a streamlined menu system with a dedicated Escape button for quick menu navigation and shows battery status of the associated transmitter.

The system features 20 fixed frequency banks with up to 12 compatible frequency presets and 1 user bank with up to 12 user-programmable frequencies.

To prevent interference, the EM 100 receiver's true-diversity reception compares incoming signals on two independent receiver circuits to ensure optimal RF quality. To ensure crystal clear audio, Sennheiser's proprietary HDX compander technology maximizes the microphone's signal-to-noise ratio, while avoiding RF noise.

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. 

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.

To simplify and speed up your workflow, two RJ10 data networking ports allow you to daisy-chain up to 12 receivers and quickly perform a frequency setup for the entire multi-channel system via the Easy Setup function.

If you assign the frequencies manually, you can expand the setup to accommodate a maximum of 20 receivers. An RJ10 cable is included.

The detachable antennas with BNC sockets allow you to create a larger system using up to four EM 100 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 discrete ME 2-II and MKE 2 lavalier mics provide exceptional clarity in spoken word applications.
• The lightweight ME 3-II headset mic provides exceptional clarity in spoken-word applications.
• The SKM 100 handheld transmitter is available with three different mic capsule options for presenters and performers who prefer the flexibility of a handheld microphone.

Related Questions and Answers

Q: 1. Will these potentially interfere with lavaliers that have already been paired on a film set? I'd like to use these as IFBs.

A: Yes, the Sennheiser ew IEM G4-Twin Wireless Monitor System Kit (A1: 470 to 516 MHz) can be used on a film set where wireless microphones are already being used. As long as the 470 to 516 MHz frequency band will work in your area and does not already have a large number of wireless mics operating on the same band, there should not be any problems. The IEM G4 system offers 1,680 receiving frequencies,

Q: 2. Can 1 TX connect to 2 RX simultaneously? Spec say SK500 G4 transmitter can transmit to unlimited number of EW series receivers.

A: Yes, you can connect one Sennheiser SK 500 G4 Wireless Bodypack Transmitter to multiple Sennheiser EK 500 G4 Pro Wireless Camera-Mount Receivers.

Q: 3. in terms of heat dissipation, is it safe to operate this inside a K-Tek Stingray audio bag for IFB?

A: Yes it is safe to operate the Sennheiser SR IEM G4 Stereo Transmitter inside of an audio bag for IFB.

Q: 4. Will the mic that comes with this (Sennheiser EW 512P) work with the AVX transmitter?

A: Yes. The MKE2 mic is an excellent mic and will work with both the EW512 P and AVX.

Q: 5. can each receiver receive a separate channel? one XLR feeds one receiver, the other XLR feeds the other?

A: This is not possible. The microphone inputs are configured as a stereo output to each receiver.

Q: 6. Is there a way to assign left channel to one receiver and right channel to another, either through the transmitter or the receiver configuration settings?

A: Unfortunately not , channels are not assignable.

Q: 7. The system comes with a 'Fur Windscreen'. Is that the foam type that cannot be removed or is it an separate fur/fuzzy windscreen that can be attached? Finally, is an aftermarket fur windscreen needed for outdoor usage? If so, what would be a recommendation? Thank you!

A: Hi, The fur windscreen included is removable and it is sufficient for outdoor use. I hope this is helpful, thank you for shopping at B&H!

Q: 8. can you shiping in india ?

A: Sennheiser does not allow us to ship this internationally. I apologize for the inconvenience.

Q: 9. What are the reasons for choosing one of the frequency ranges (470-558 or 558-608) over the other?

A: It also depends where you will be using the device. You can use sites like https://en-us.sennheiser.com/sifa to find which frequency bands in your target area are free or busy. This will narrow it down. If you travel abroad, certain frequencies may be banned or license only. Worth doing a little research into what you need where you are going.

Q: 10. What's the latency?

A: The manufacturer has not provided any specifications for latency for the Sennheiser EW 512P G4 Camera-Mount Wireless Omni Lavalier Microphone System.