The Sennheiser SK 100 G4 is a bodypack wireless transmitter compatible with the EM 100 G4 wireless receiver. The rugged, all-metal design is comfortable for performers and presenters to wear for daily use on stage. It 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 feet.

The SK 100 G4 features a locking 3.5mm connector with an adjustable input level to accommodate the compatible lavalier or headset microphone of your choice, or an adapter cable for guitar and bass. When the Sync function on the receiver is engaged, the transmitter and receiver quickly link to the same frequency via infrared. The transmitter's backlit LCD displays essential information, while the convenient programmable mute function can be locked out to prevent accidental changes during a performance.

The unit can also be powered by a single 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 SK 100 G4 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 300/500 systems.

Wireless TransmissionAnalog UHF

RF Frequency BandA:
516 to 558 MHz

RF Bandwidth42 MHz

Frequency Step Size25 kHz

RF Channel ScanningAuto-Scan

Max Operating Range330' / 100.6 m

ModulationWideband FM

Transmitter

Form FactorBodypack

RF Output Power30 mW

Audio I/O1 x 1/8" / 3.5 mm TRS Female Input (Lockable)

MutingMute Switch

Audio Input Level3 V RMS

Gain Range60 dB (3 dB Steps)

Frequency Response80 Hz to 18 kHz (Mic)
25 Hz to 18 kHz (Line)

Sync MethodIR

Antenna1 x Flexible Whip, Fixed (Beltpack)

Power RequirementsBattery

Battery Type2 x AA (Included)
1 x Sennheiser Accupack (Not Included, Replaceable)

Approx. Battery Life8 Hours (Alkaline)

Display & Indicators1 x Backlit LCD (Audio Level, Battery Status, Channel, Group, Mute, Signal Strength)

HousingMetal

Operating Temperature14 to 131°F / -10 to 55°C

Dimensions2.5 x 3.2 x 0.9" / 64 x 82 x 24 mm

Weight5.6 oz / 160 g (with Batteries)

Packaging Info

Package Weight0.69 lb

Box Dimensions (LxWxH)14 x 3.2 x 2.8"

• For EM 100 G4 Wireless Receiver
• Use with Lav/Headset Mic or Instrument
• Locking 3.5mm Connector
• 1680 Auto-Scan Frequencies
• Fixed 30mW RF Output Power
• Mute Switch, Backlit LCD
• Adjustable Input Level Control
• 8-Hr AA Batteries

• Sennheiser SK 100 G4 Wireless Bodypack Transmitter (A: 516 to 558 MHz)
• 2 x AA Batteries