Sennheiser ew 300 G4-HEADMIC1-RC radio headband microphone system

General Description

Sennheiser ew 300 G4-HEADMIC1-RC wireless system with bodypack transmitter, headband microphone and diversity receiver.

Evolution wireless has been the industry standard for flexibility, ease of use and reliability for wireless microphone systems for years and the new and improved G4 system looks to continue this trend.

The best that the G4 300 series has to offer for the voice: top-notch condenser technology coupled with a true diversity receiver. This system captures every last nuance and detail of the vocalist. A programmable mute button on the microphone lets the user decide when it is time to go “on-air.”

The Sennheiser SL Headmic 1 is a lightweight and comfortable omnidirectional earhook microphone with MKE 1 microphone capsule ideal for presentations and performances.

With a wide tuning range and easy to use interface, the half-unit size receiver has true diversity for stable RF and is supplied complete rack mounting brackets.

The wireless Sennheiser G4 ew 300 range is available in the following frequency ranges:

Range Aw+ = 470 - 558 MHz
Range Gw = 558 - 626 MHz 
Range GBw = 606 - 678 MHz
Range Bw = 626 - 698 MHz 
Range Cw = 718 - 790 MHz 
Range Dw = 790 - 865 MHz

Only Range GBw (channel 38) and Range Dw (channel 70) systems are available for purchase on the online shop. The other frequency ranges are available by special request for fixed site licence applications. Range GBw includes Channel 38 which is the most reliable solution for portable wireless microphone systems. (Please Note. Channel 38 use requires a licence. For more information please contact us or visit). Range Dw includes Channel 70 which is for legal licence-free use in the UK and Europe.

The Sennheiser G4 range of wireless microphone systems are capable of operating simultaneously, intermodulation free, on six frequencies in the licence exempt 863-865 MHz (channel 70) band. These frequencies are;

863.100 MHz
863.400 MHz
863.750 MHz
864.225 MHz
864.550 MHz
864.975 MHz

Features

High quality omni-directional headband microphone
Integrated windshield
Robust bodypack transmitter design Integrated programmable mute switch
88MHz bandwidth with up to 32 channels
Compatible with wireless speaker system LSP 500 PRO
Rack mountable receiver in a full-metal housing
backlit OLED receiver screen for full control
True diversity for stable RF  
Proven industry reliability
Integrated socket for (optional) remote control mute switch

Delivery Includes

EM 300-500 G4 true diversity receiver
SK 300 G4
SL Headmic 1
GA 3 rackmount set
power supply
2 AA batteries
2 rod antennas
quick guide
safety guide
manufacturer declaration sheet

Technical Data

SK 300 G4

RF characteristics
Modulation
Wideband FM
Frequency ranges
Aw+: 470 - 558 MHz
AS: 520 - 558 MHz
Gw1: 558 - 608 MHz
Gw: 558 - 626 MHz
GBw: 606 - 678 MHz
Bw: 526 - 698 MHz
Cw: 718 - 790 MHz
Dw: 790 - 865 MHz
JB: 806 - 810 MHz
K+: 925 - 937.5 MHz
Transmission frequencies
Max. 2880 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 72 MHz
Nominal/peak deviation
±24 kHz / ±48 kHz
Frequency stability
≤ ±15 ppm
RF output power at 50 Ω
switchable:
Low: typ. 10 mW
Standard: typ. 30 mW
High: typ. 50 mW
Pilot tone squelch
Can be switched off
AF characteristics
Compander system
Sennheiser HDX
AF frequency response
Mic: 80 – 18,000 Hz
Line: 25 – 18,000 Hz
Signal-to-noise ratio (1 mV,
peak deviation)
≥ 115 dBA
Total harmonic distortion
(THD)
≤ 0.9 %
Max. microphone/line
input voltage
3 V
eff
Microphone/line input
impedance
40 kΩ, unbalanced / 1 MΩ
Input capacitance
Switchable
Setting range for input
sensitivity
60 dB,
adjustable in 3 dB steps
Overall device
Temperature range
-10 °C 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 h
Dimensions
Approx. 82 x 64 x 24 mm
Weight (incl. batteries)
approx. 160 g

SL Headmic

Frequency response
20 to 20,000  Hz ± 3  dB
Pick-up pattern
omni-directional
Nominal impedance  @  1  kHz
1  kΩ
Min. terminating  
impedance
4.7  kΩ
Sensitivity
5  mV/Pa ± 3  dB
Diameter of mic capsule
3.3  mm
Max. sound pressure level
143  dB
Equivalent noise level
27  dB(A)
Supply current
approx. 240  μA
Power supply
4.5 to 15  V
Temperature range
Operation:
Storage:
-10  °C to 50  °C
(14  °F to 122  °F)
-20  °C to 70  °C
(-4  °F to 158  °F)
Relative air humidity
max. 95  %
Cable length
1.6  m
Diameter of boom arm
1.1  mm
Connector
3.5  mm jack plug or Sennheiser special connector (-4 variant)
Weight (without cable)
approx. 7  g

EM 300 G4 Receiver

RF characteristics
Modulation
Wideband FM
Frequency ranges
Aw+: 470 - 558 MHz
AS: 520 - 558 MHz
Gw1: 558 - 608 MHz
Gw: 558 - 626 MHz
GBw: 606 - 678 MHz
Bw: 526 - 698 MHz
Cw: 718 - 790 MHz
Dw: 790 - 865 MHz
JB: 806 - 810 MHz
K+: 925 - 937.5 MHz
Receiving frequencies
Max. 2880 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 72 MHz
Nominal/peak deviation
±24 kHz / ±48 kHz
Receiver principle
True diversity
Sensitivity (with HDX, peak deviation)
< 2.5 μV for 52 dBA eff S/N
Adjacent channel selection
Typically ≥ 75 dB
Intermodulation attenuation
Typically ≥ 70 dB
Blocking
≥ 75 dB
Squelch
5 to 25 dBμV
in steps of 2 dB
Pilot tone squelch
Can be switched off
Antenna inputs
2 BNC sockets
AF characteristics
Compander system
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)
≥ 115 dBA
Total harmonic distortion
(THD)
≤ 0.9 %
AF output voltage (at peak deviation, 1 kHz AF)
6.3 mm jack socket
(unbalanced): +12 dBu
XLR socket
(balanced): +18 dBu
Setting range “AF Out”
48 dB (3 dB steps)
Overall device
Temperature range
-10 °C to +55 °C
Power supply
12 V DC
Current consumption
350 mA
Dimensions
Approx. 202 x 212 x 43 mm
Weight
Approx. 980 g