Sennheiser SK 100 G4-A Bodypack Transmitter
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Description
Sennheiser SK 100 G4-A | Bodypack Transmitter
The Sennheiser SK 100 G4-A Bodypack Transmitter is a standalone transmitter for compatible analog Sennheiser evolution wireless G4 systems. This A-band transmitter operates exclusively from 516–558 MHz, so confirm that your receiver supports overlapping frequencies before ordering. It is not compatible with Sennheiser EW-D or EW-DX receivers, as these systems use digital transmission while the SK 100 G4-A is an analog transmitter.
Designed for lavalier microphones, headset microphones, and instrument applications, the SK 100 G4-A features a locking 3.5 mm input and infrared synchronization for quick setup with a compatible receiver. It supports up to 20 compatible channels, offers 42 MHz switching bandwidth, and provides 1,680 selectable frequencies for flexible frequency coordination.
The durable metal housing is suitable for live sound, theater, education, worship, rental, and presentation environments. It delivers up to 8 hours of operation using two AA batteries or a compatible BA 2015 rechargeable battery pack. Transmitter only: receiver, microphone, instrument cable, and charging accessories are not included.
Key Features
- Robust bodypack transmitter for daily use on stage
- Easy and flexible wireless synchronization between transmitter and receiver via infrared
- Fast frequency allocation for up to 12 receivers via new linking functionality
- Up to 20 compatible channels
- Up to 42 MHz bandwidth with 1680 selectable frequencies, fully tunable in a stable UHF range
- Transmission range up to 100 meters / 300 feet
- High RF output power (up to 30 mW) depending on country regulations
Specifications
- Dimensions: Approx. 82 x 64 x 24 mm
- Compander: Sennheiser HDX
- THD, total harmonic distortion: <= 0.9%
- Weight (incl. batteries): approx. 160 g
- Signal-to-noise ratio: >= 110 dBA
- RF output power: Max. 30 mW
- Switching bandwidth: up to 42 MHz
- Peak deviation: +/-48 kHz
- Nominal deviation: +/-24 kHz
- Operating time: Typically 8 h
- Modulation: Wideband FM
- Power supply: 2 AA batteries, 1.5 V or BA 2015 accupack
- Current consumption: at nominal voltage: typ. 180 mA; with transmitter switched off: <= 25 A
- Input impedance: 40 k OHM, unbalanced / 1 M OHM
- Max. input voltage: 3 Veff
- Powering: 3 V battery / 2.4 V rechargeable battery
- Transmission frequency: Max. 1680 transmitting frequencies, adjustable in 25 kHz steps; 20 frequency banks, each with up to 12 factory-preset channels, no intermodulation; 1 frequency bank with up to 12 programmable channels
- AF frequency response: Mic: 80 - 18,000 Hz; Line: 25 - 18,000 Hz
- Temperature range: -10 C to +55 C
- Frequency stability: <= +/-15 ppm
Package Contents
- SK 100 G4 bodypack transmitter
- 2 AA batteries
- Quick guide
- Safety guide
- Manufacturer declaration sheet
Frequently Asked Questions
What is the Sennheiser SK 100 G4-A?
The Sennheiser SK 100 G4-A is a standalone analog bodypack transmitter for compatible Sennheiser evolution wireless systems. It is designed for lavalier microphones, headset microphones, and instrument applications.
What frequency range does the Sennheiser SK 100 G4-A use?
This A-band model operates exclusively from 516–558 MHz. Confirm that your receiver supports overlapping frequencies within this range before ordering.
Is the Sennheiser SK 100 G4-A compatible with EW-D or EW-DX receivers?
No. The SK 100 G4-A is an analog transmitter and is not compatible with Sennheiser EW-D or EW-DX digital wireless receivers.
Does the Sennheiser SK 100 G4-A include a receiver or microphone?
No. This listing includes the bodypack transmitter and batteries only. A compatible receiver, microphone, headset, instrument cable, and charging accessories are sold separately.
What microphones and cables work with the SK 100 G4-A?
The transmitter uses a locking 3.5 mm input for compatible Sennheiser lavalier microphones, headset microphones, and instrument cables.
How long does the Sennheiser SK 100 G4-A operate on batteries?
The transmitter provides up to 8 hours of operation using two AA batteries or a compatible Sennheiser BA 2015 rechargeable battery pack.

