คำอธิบาย
Sennheiser EW IEM G4 Wireless In-Ear Monitoring System
ชุดไวเลสอินเอียร์ monitor Sennheiser EW IEM G4 เป็นชุดอินเอียร์ไร้สายย่าน UHF ในเจนเนอเรชั่น 4 ประกอบด้วยเครื่องรับ EK IEM G4 Stereo Receiver, เครื่องส่ง SR IEM G4 Stereo Transmitter, หูฟัง in ear IE 4 Earphones, 1680 Selectable Frequencies in UHF Range, Up to 16 Compatible Channels, 300′ Transmission Range
The ew IEM G4 Wireless Monitor System from Sennheiser is part of the evolution family of wireless monitoring systems and includes an SR IEM G4 transmitter, a EK IEM G4 stereo receiver, a pair of IE 4 earphones, a rod antenna, GA 3 rackmount kit, and two AA batteries. This kit can be used as a rugged, all-in-one wireless in-ear monitoring system for live stage, theater, and house of worship applications.
Features:

- Engineered for professional live sound: Rugged all-in-one wireless monitoring system for in-ear applications.
- Robust bodypack receiver and reliable in-ear monitoring IE 4 headphones delivering clarity along the whole frequency spectrum for daily use on stage
- Half-rack stereo transmitter in a full-metal housing with OLED display for full control
- Easy and flexible wireless synchronization between transmitter and receiver via infrared
- Compatible with Sennheiser WSM control software for flexible frequency allocation
- Up to 16 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 50 mW) depending on country regulations
Specifications
EK IEM G4 Stereo Bodypack Receiver with IE 4 Earphones
Frequency Band |
G: 558 to 608 MHz |
Receiving Frequency |
Maximum 1680 receiving frequencies, adjustable in 25 MHz steps
20 frequency banks, each with up to 16 factory-preset channels, no intermodulation
6 frequency banks with up to 16 programmable channels |
Switching Bandwidth |
Up to 42 MHz |
Nominal/Peak Deviation |
±24 kHz / ±48 kHz |
Receiver Type |
Adaptive diversity |
Sensitivity |
< 4 μV, typ. 1.6 μV for 52 dBA (with HDX, peak deviation) rms s/n |
Adjacent Channel Selectivity |
Typically ≥ 65 dB |
Intermodulation Attenuation |
Typically ≥ 70 dB |
Blocking |
≥ 80 dB |
Pilot Tone |
Squelch: Can be switched off |
Squelch |
5 to 25 dBµV, adjustable in steps of 2 dB |
Compander |
Sennheiser HDX |
Signal to Noise Ratio |
Approximately 90 dBA (1 mV, peak deviation) |
Total Harmonic Distortion (THD) |
≤ 0.9% |
Audio Output Power |
2 x 100 mW at 32 Ohms (@ 2.4 V, 5% THD, nominal deviation) |
Quality Setting Range |
+8 dB at 80 kHz |
Limiter |
-18 dB to -6 dB, adjustable in steps of 6 dB, can be switched off |
Temperature Range |
14 to 131°F / -10 to 55°C |
Power Supply |
2 x AA batteries, 1.5 V or BA 2015 accupack |
Current Consumption |
At Nominal Voltage: Approximately 140 mA
With Transmitter Switched Off: ≤ 25 µA |
Operating Time |
Approximately 4 to 6 hours (depending on volume level) |
Dimensions (W x L x H) |
3.2 x 2.5 x 0.9″ / 82 x 64 x 24 mm |
Weight |
4.4 oz / 125 g |
SR IEM G4 Stereo Transmitter
Modulation |
Wideband FM stereo (MPX pilot tone) |
Frequency Band |
G: 566 to 608 MHz |
Receiving Frequency |
Maximum 1680 receiving frequencies, adjustable in 25 kHz steps
20 frequency banks, each with up to 16 factory-preset channels, no intermodulation
6 frequency banks with up to 16 programmable channels |
Switching Bandwidth |
up to 42 MHz |
Nominal/Peak Deviation |
±24 kHz / ±48 kHz |
MPX Pilot Tone |
19 kHz/ ±5 kHz (frequency/deviation) |
Frequency Stability |
±10 ppm |
Antenna Output |
BNC socket, 50 Ohms |
RF Output Power |
@ 50 Ohms Switchable:
Low: Typical 10 mW
Standard: Typical 30 mW
High: Typical 50 mW |
Compander |
Sennheiser HDX |
AF Frequency Response |
25 Hz to 15 kHz |
AF Input |
Electronically Balanced
2 x XLR-1/4″ / 6.3 mm balanced combo jack
Balanced AF in L +Mono
Balanced AF in R |
Maximum Input Level |
+22 dBu |
Total Harmonic Distortion (THD) |
≤ 0.9 % |
Signal to Noise Ratio |
Approximately >90 dB (nominal load and peak deviation) |
AF Output |
1/4″ / 6.3 mm stereo jack socket balanced
Loop out balanced L, loop out balanced R |
Temperature Range |
14 to 131°F / -10 to 55°C |
Power Supply |
12 VDC |
Current Consumption |
Maximum 350 mA |
Dimensions (W x L x H) |
8.0 x 8.3 x 1.7″ / 202 x 212 x 43 mm |
Weight |
2.2 lb / 980 g |