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Sennheiser EW 300-Base SK-RC Bodypack Base Set

Product Features

  • EM 300-500 G4 Wireless Receiver
  • SK 300 G4-RC Bodypack Transmitter
  • No Microphone
  • 2000 Frequencies in 25 kHz Steps
  • 20 Frequency Banks
  • 32 Factory and 32 Programmable Channels
  • Transmission Range Up to 330′
  • Includes Power Supply
  • GA3 Rackmount Set
  • 2 x Rod Antennas

Sennheiser EW 300 G4-BASE SK-RC-GW1 Overview


The ew 300-Base SK-RC Bodypack Base Set with No Microphone from Sennheiser includes an SK 300 G4-RC bodypack transmitter, an EM 300-500 wireless true diversity receiver with power supply, a GA3 rackmount kit, two rod antennas, and four AA batteries. It can be used to capture audio in several environments such as broadcast TV, presentation, education, and business applications when paired with a lavalier or headset microphone (sold separately).

The G4 300 Series uses the power of an increased switching bandwidth of 50 MHz. This allows you to operate multi-channel setups with dozens of channels while securing reliable operation. The ew 300 G4-Base SK-RC Bodypack Base Set ensures hands-free operation even during the longest congress or lecture event.

In addition, Sennheiser Control Cockpit Software (download) offers easy handling, control, and maintenance for the Digital Wireless System. It provides a global overview of all network-enabled devices, shows all status information, and makes setting adjustments very easy.

EM 300-500 G4 Wireless True Diversity Receiver GW1: (558 to 608 MHz)

The EM 300-500 G4 Wireless True Diversity Receiver from Sennheiser is the latest addition to their evolution series of wireless receivers. It operates in the UHF frequency range and can be used with a companion transmitter and microphone (sold separately), as part of a wireless RF transmission system for live stage, theater, and presentation applications.

The half-rack receiver features 2000 frequencies and is tunable in 25 kHz steps. There are 20 fixed frequency banks with up to 32 compatible frequency presets and 6 user banks with up to 32 user programmable frequencies. This receiver is built with a menu-driven backlit OLED display showing current frequency, frequency bank and channel number, metering of RF level, volume level, line output level, lock status, battery status, muting function, and more.

Enclosed in a rugged metal housing, the EM 300-500 G4 receiver is equipped with a balanced XLR-3M audio output along with an unbalanced 1/4″ audio output. A 1/4″ headphone output with headphone volume control is provided along with an Ethernet port (RF45) for remote network-based monitoring and control, using Sennheiser’s Wireless System Manager software. Two BNC-type sockets are for connecting the antennas. Finally, the half-rack receiver operates on the included 12V power supply and includes a GA3 rackmount set.

True diversity half-rack receiver in a full-metal housing with intuitive OLED display for full control
Easy and flexible wireless synchronization between transmitter and receiver via infrared
Up to 32 compatible channels
Up to 50 MHz bandwidth with 2000 selectable frequencies, fully tunable in a stable UHF range
Ethernet connection for Wireless Systems Manager (WSM) control software for advanced frequency coordination in multi-channel setups
High RF output power (up to 50mW, adjustable in three steps 10/30/50) depending on country regulations


Modulation Wideband FM
Frequency Band GW1: (558 to 608 MHz)
Receiving Frequency Maximum 2000 receiving frequencies, adjustable in 25 kHz steps
20 frequency banks, each with up to 32 factory-preset channels, no intermodulation
6 frequency banks with up to 32 programmable channels
Switching Bandwidth Up to 50 MHz
Nominal/Peak Deviation ±24 kHz / ±48 kHz
Principle of Operation True diversity
Sensitivity < 2.5 μV for 52 dBA eff S/N (with HDX, peak deviation)
Adjacent Channel Selectivity Typically ≥ 75 dB
Intermodulation Attenuation Typically ≥ 70 dB
Blocking ≥ 75 dB
Squelch Off, 5 to 25 dB μV in steps of 2 dB
Pilot Tone Squelch Can be switched off
Antenna Inputs 2 x BNC sockets
Compander Sennheiser HDX
EQ Presets Switchable, Act on Line and Monitor Outputs)
Preset 1: Flat
Preset 2: Low cut (-3 dB at 180 Hz)
Preset 3: Low cut/high boost (-3 dB at 180 Hz, +6 dB at 10 kHz)
Preset 4: High boost (+6 dB at 10 kHz)
Signal to Noise Ratio (1 mV, peak deviation)
Line: ≥ 115 dBA
Total Harmonic Distortion (THD) ≤ 0.9%
Maximum AF Output Voltage 1/4″ (6.3 mm) Jack Socket: +12 dBu (unbalanced) (at peak deviation, 1 kHz AF)
XLR Socket: +18 dBu (balanced) (at peak deviation, 1 kHz AF)
Output Level Range 48 dB (3 dB steps)
Temperature Range 14 to 131°F (-10 to 55°C)
Power Supply 12 VDC
Current Consumption 350 mA
Dimensions (L x W x H) 8.0 x 8.3 x 1.7″ (202 x 212 x 43 mm)
Weight 2.2 lb (980 g)
Packaging Info
Box Dimensions (LxWxH) 16.3 x 14.0 x 3.1″

SK 300 G4-RC Bodypack Transmitter GW1: (558 to 608 MHz)

Modulation Wideband FM
Frequency Range GW1: (558 to 608 MHz)
Transmission Frequencies 2000 frequencies adjustable in 25 MHz steps
20 frequency banks, each with up to 32 factory-preset channels, no intermodulation
6 frequency banks with up to 32 programmable channels
Switching Bandwidth Up to 88 MHz
Peak Deviation Nominal: ±24 kHz / ±48 kHz
Frequency Stability ≤ ±15 ppm
RF Output Power Up to 50 mW Switchable:
Low: Typ. 10 mW
Standard: Typ. 30 mW
High: Typ. 50 mW
Pilot Tone Squelch Can be switched off
Compander Sennheiser HDX
AF Frequency Response Mic: 80 Hz to 18 kHz
Line: 25 Hz to 18 kHz
Signal to Noise Rate ≥ 115 dBA (1 mV, peak deviation)
Total Harmonic Distortion (THD) ≤ 0.9%
Input Voltage Mic / Line: 3 V eff
Input Impedance Mic / Line: 40 kOhms, unbalanced / 1 MOhm
Input Capacitance Switchable
Setting Range For Input Sensitivity: 60 dB, adjustable in 3 dB steps
Temperature Range 14 to 131°F / -10 to 55°C
Power Supply 2 AA batteries, 1.5 V or BA 2015 accupack
Nominal Voltage 3 V battery / 2.4 V rechargeable battery
Current Consumption At Nominal Voltage: typ. 180 mA
With transmitter switched Off: ≤ 25 μA
Operating Time Typically 8 hours
Dimensions (L x W x H) 3.2 x 2.5 x 0.9″ / 8.2 x 6.4 x 2.4 cm
Weight 5.6 oz / 160.0 g (includes batteries)
Packaging Info
Box Dimensions (LxWxH) 13.9 x 3.2 x 2.9″

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