I. Đặc điểm của bộ thu và phát sennheiser EW 500 G4-945:
The pro‘s choice. Renowned sound engineers rely on ew 500 G4‘s flexibility, especially when handling multi channel settings on the world‘s music stages. Up to 88 MHz bandwidth, up to 32 channels. Ethernet connection for Wireless Systems Manager (WSM) control software included for advanced frequency coordination in multi-channel setups.
The pinnacle of the evolution series, powered by Sennheiser’s renowned e 900 capsules e 935, e 945, and e 965 on a lightweight black aluminum handheld transmitter, ready to take the world’s biggest live stages.
Thiết bị bộ thu và phát Sennheiser EW 500 G4-945
- EM 300-500 G4 true diversity receiver
- SKM 300 G4-S handheld transmitter
- MMD 945-1 microphone head (only 945 variants)
- 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 88 MHz bandwidth with 3520 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 50 mW, adjustable in three steps 10/30/50) depending on country regulations
II. Thông số kĩ thuật bộ thu và phát Sennheiser EW 500 G4-945
1. EM 300-500 G4 true diversity receiver
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 3250 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 88 MHz bandwidth with 3250 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
| Dimensions |
Approx. 202 x 212 x 43 mm |
| Compander |
Sennheiser HDX |
| THD, total harmonic distortion |
≤ 0.9 % |
| Weight |
Approx. 980 g |
| Audio output |
6.3 mm jack socket (unbalanced): +12 dBu
XLR socket (balanced): +18 dBu |
| Signal-to-noise ratio |
≥ 115 dBA |
| Switching bandwidth |
up to 88 MHz |
| Peak deviation |
±48 kHz |
| Nominal deviation |
±24 kHz |
| Modulation |
Wideband FM |
| Power supply |
12 V DC |
| Antenna connector |
2 BNC sockets |
| Current consumption |
350 mA |
| Adjacent channel rejection |
Typically ≥ 75 dB |
| Intermodulation attenuation |
Typically ≥ 70 dB |
| Frequency range |
AS: 520 - 558 MHz
K+: 925 - 937.5 MHz
JB: 806 - 810 MHz
GBw: 606 - 678 MHz
Gw: 558 - 626 MHz
Bw: 626 - 698 MHz
Cw: 718 - 790 MHz
Dw: 790 - 865 MHz
Aw+: 470 - 558 MHz
Gw1: 558 - 608 MHz |
| Receiving frequency |
Max. 3520 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 |
| RF sensitivity |
< 2.5 μV for 52 dBA eff S/N |
| Squelch |
5 to 25 dBμV in steps of 2 dB |
| Equalizer |
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) |
| Temperature Range |
-10 °C to +55 °C |
| Receiver Principle |
True diversity |
| Blocking |
≥ 75 dB |
2. Sennheiser SKM 300 G4-S handheld transmitter
The SKM 300 G4 Wireless Handheld Transmitter, No Capsule from Sennheiser is the latest addition to their evolution series of wireless transmitters. It operates in the UHF frequency range and can be used with a companion receiver and a microphone capsule (sold separately) as part of a wireless RF transmission system for live stage, theater, and presentation applications.
It features 3250 frequencies that are tunable in 25 kHz steps and equipped with 20 fixed-frequency banks with up to 32 compatible frequency presets, and 6 user banks with up to 32 user-programmable frequencies. The transmitter's menu-driven backlit LCD display shows the current frequency, frequency bank and channel number, metering of AF level, transmission status, muting function, battery status, and more. Furthermore, the SKM 300 G4 handheld transmitter's frequency response ranges from 80 Hz to 18 kHz and power is supplied by two 1.5V AA size batteries, or by one Sennheiser BA 2015 rechargeable accupack. Also, an e 935, e 945, or e 965 microphone capsule is required (sold separately).
- Handheld transmitter features a lightweight aluminum housing for use with a microphone capsule (sold separately)
- Easy and flexible wireless synchronization between transmitter and receiver via infrared
- Easy to use, fast setup time
- Integrated network port allows control, monitoring, and setup via Sennheiser Control Cockpit and WSM software.
- Up to 88 MHz bandwidth with 3250 selectable frequencies, fully tunable in a stable UHF range
- Increased RF output power (10/30/50 mW)
- Transmission range up to 330'
- Requires an e 935, e 945, or e 965 microphone capsule (sold separately)
| Dimensions |
Approx. Ø 50 x 265 mm |
| Compander |
Sennheiser HDX |
| THD, total harmonic distortion |
≤ 0.9 % |
| Weight |
(incl. batteries) approx. 450 g |
| Signal-to-noise ratio |
≥ 115 dBA |
| RF output power |
switchable: Low: typ. 10 mW, Standard: typ. 30 mW, High: typ. 50 mW |
| Switching bandwidth |
up to 88 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 µA |
| Powering |
3 V battery / 2.4 V rechargeable battery |
| Transmission frequency |
Max. 3520 transmission 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 |
| AF frequency response |
80 – 18,000 Hz |
| Temperature Range |
-10 °C to +55 °C |
| Frequency stability |
≤ ±15 ppm |
3. MMD 945-1 microphone head (only 945 variants)
The Sennheiser MMD 945 is a cardioid capsule. It can be used to capture audio when paired with a receiver and the SKM 100/300/500 G3/G4, SKM 2000/6000/9000, SKM D1/AVX, and SL handheld DW wireless handheld transmitters (sold separately). The capsule is easily installed, includes a metal grille and replaces faulty or damaged capsules. The interchangeable capsule system also allows users to select among capsules with differing sensitivity levels and polarity patterns.
| Sound pressure level (SPL) |
154 dB SPL |
| Transducer principle |
Dynamic |
| Pick-up pattern |
supercardioid |
| Sensitivity |
1.8 mV/Pa |
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