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.

Open Box Products Have a Limited 2-Year Manufacturer Warranty    For Guitar and Bass Players    Ci 1 Instrument Cable    Lightweight Bodypack Transmitter    True-Diversity Rackmount Receiver    1680 Auto-Scan Frequencies    8-Hr AA Batteries    Expandable to 12 Mic Channels/330' Range

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. What is the size and weight of the package?

A: The package for the Sennheiser EW 100 G4-835-S (BH #SEEW100G48A1) weighs 6.575 lbs and is 16.1 x 12.7 x 3.3" (LxWxH).

Q: 2. what accu batteries can I use for Sennheiser SK 100 G4 transmitter ?

A: The below are compatible: https://www.bhphotovideo.com/c/product/324393-REG/Sennheiser_BA2015G2_BA_2015G2_Rechargeable_Battery.html https://www.bhphotovideo.com/c/product/324394-REG/Sennheiser_L2015G2_Charging_Station.html Power Requirements Battery Battery Type 2 x AA (Included) 1 x Sennheiser Accupack (Not Included, Replaceable)

Q: 3. Does this receiver have a warranty with it and if so, how long does it last and what does it cover?

A: Many Sennheiser products, including the Sennheiser EM 100 G4 Wireless Receiver have a Limited 2-Year warranty. You will find the specifics of the warranty terms and conditions here: https://en-us.sennheiser.com/service-support-services-warranty-conditions

Q: 4. is this microphone supported on the control cockpit app?

A: Yes. According to Sennheiser; Sennheiser Control Cockpit is the central software for easy handling, control and maintenance of the entire SpeechLine Digital Wireless and evolution wireless G3 and G4 portfolio as well as the new TeamConnect Ceiling 2 microphone.

Q: 5. Is the xlr out line level?

A: The XLR out is a balanced MIC level output, while the 1/4-inch out is an unbalanced LINE level signal.

Q: 6. Will the Sennheiser 100 4. Work with my older Sennheiser receivers? I have eg 100 and an eg 100 2. Currently having issues with both transmitters. One comes on and will not work. The other one works great while on. As soon as we turn the transmitter off, our soundsystem makes a horrible sound and I have to mute the whole system. This happened today at the end of our church service during alter call. The worse time possible for it to start popping and crackling at top volumes. It may be interference, I don’t know. But it has to be fixed. Your help would be appreciated James

A: Sennheiser's G4 series components are backwards compatible for use with the older Sennheiser G1, G2 and G3 series components. Be sure to select G4 components on the same frequency band as your older components for compatibility. Regarding the noise, you may be able to resolve the issue with popping and crackling noises when you switch off the transmitter by adjusting the squelch threshold setting on the receiver. It may be set too low or may be turned off. Squelch eliminates the noise that occurs when the transmitter is switched off and also suppresses sudden noise when the receiver is no longer receiving sufficient signal from transmitter. With the transmitter switched off, try adjusting the squelch threshold on the receiver between 5 to 20 dB (start at 5 dB first and increase it only if needed). Use the lowest possible setting that suppresses the unwanted noise. I hope this information helps! Please feel free to contact us if you have any questions or would like further assistance.

Q: 7. Hi , can I covert these microphones to wireless charging ones?

A: This is a wireless mic and batteries may be rechargeable.

Q: 8. which frequency set is better? and what are the applications of each: A, A1, G?

A: In general, all of the frequency ranges offered for the Sennheiser EW 100 G4-ME2 Wireless Omni Lavalier Microphone System can be considered equal. One becomes better than the others when assessing factors such as location and other wireless systems existing and operating in the same environment. For instance, some cities have more open channels on a specific range than others. If this system is being integrated into a scenario with other wireless microphones, the existing frequency ranges of those microphones should also be taken into consideration when choosing a frequency for the Sennheiser. This system has 1,680 potential frequencies on each range and the ability to scan for the cleanest channel based on location, so it is hard to go wrong with any range.

Q: 9. What kind of rack-mount hardware is in the box? How does it compare to Sennheiser GA-3?

A: The Sennheiser EW 100 G4-835-S Wireless Handheld Microphone System with MMD 835 Capsule contains a rackmount kit, which can be seen in the product image here: https://bhpho.to/4cpJGSy

Q: 10. Can the Sennheiser SK 100 G4 transmit to multiple 100 g4 receiverers on the same frequency. one transmitter to 2 - receivers?

A: Yes, the Sennheiser SK 100 G4 Wireless Bodypack Transmitter can simultaneously transmit audio to multiple EW 100 G4 Series Wireless Receivers that are tuned to the same frequency.