I. Tính năng của bộ thu và phát sennheiser EW 100 G4-945:
Versatile wireless systems for those who sing, speak or play instruments with up to 42 MHz tuning bandwidth in a stable UHF range and fast, simultaneous setup of up to 12 linked systems.
State-of-the-art live sound featuring Sennheiser‘s renowned e 935 and e 945 capsules on a lightweight aluminum transmitter with integrated mute switch.
Thiết bị bộ thu và phát kèm micro không dây Sennheiser EW 100 G4-945
- EM 100 G4 true diversity receiver
- SKM 100 G4-S handheld transmitter
- MMD 945-1 microphone head (945-S variants only)
Tính năng của bộ thu và phát Sennheiser EW 100 G4-945
- Engineered for professional live sound: Rugged all-in-one wireless system for singers and presenters.
- State-of-the-art live sound featuring Sennheiser‘s renowned e 835, e 845, e 865, e 935, e 945 capsules on a lightweight aluminium transmitter with integrated mute switch
- True diversity half-rack receiver in a full-metal housing with intuitive LCD display for full control
- Easy and flexible wireless synchronization between transmitter and receiver via infrared
- Fast frequency allocation for up to 12 receivers via new linking functionality
- Up to 20 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 30 mW) depending on country regulations
II. Thông số kĩ thuật Bộ thu và phát Sennheiser EW 100 G4-945
1. EM 100 G4 true diversity receiver
The EM 100 G4 Wireless UHF True Diversity Rackmount Receiver from Sennheiser is the latest addition to their evolution family of wireless microphones and is fully compatible with all previous series. It can be used when paired with a G4 transmitter and microphone (sold separately) to capture audio in sound reinforcement applications.
- True diversity half-rack receiver in a full-metal housing with intuitive LCD display for full control
- Easy and flexible wireless synchronization between transmitter and receiver via infrared
- Fast frequency allocation for up to 12 receivers via new linking functionality
- Up to 20 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'
- High RF output power (up to 30 mW) depending on country regulations
| Frequency range |
A1: 470 - 516 MHz
A: 516 - 558 MHz
AS: 520 - 558 MHz
GB: 606 - 648 MHz
G: 566 - 608 MHz
B: 626 - 668 MHz
C: 734 - 776 MHz
D: 780 - 822 MHz
E: 823 - 865 MHz
1G8: 1785 - 1800 MHz
JB: 806 - 810 MHz
K+: 925 - 937,5 MHz |
| Dimensions |
Approx. 190 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 |
≥ 110 dBA |
| Switching bandwidth |
up to 42 MHz |
| Peak deviation |
±48 kHz |
| Nominal deviation |
±24 kHz |
| Modulation |
Wideband FM |
| Power supply |
12 V DC |
| Antenna connector |
2 BNC sockets |
| Current consumption |
300 mA |
| Adjacent channel rejection |
Typically ≥ 65 dB |
| Intermodulation attenuation |
Typically ≥ 65 dB |
| Receiving frequency |
Max. 1680 receiving frequencies, adjustable in 25 kHz steps 20 frequency banks, each with up to 12 factory-preset channels, no intermodulation 1 frequency bank with up to 12 programmable channels |
| RF sensitivity |
< 2.5 μV for 52 dBA eff S/N |
| Squelch |
low: 5 dBµV middle: 15 dBµV high: 25 dBμV |
| 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 |
≥ 70 dB |
2. SKM 100 G4-S handheld transmitter
The SKM 100 G4-S Handheld Transmitter with Mute Switch, No Capsule from Sennheiser is intended for use with the G4 series of wireless receivers and a microphone capsule (available separately). The transmitter features infrared-sync, for quick and easy channel syncing between the transmitter and receiver. It is built with a lightweight and rugged aluminum housing and delivers pristine audio reproduction of both speech and performance vocals. Two AA batteries power the transmitter, and it is equipped with contacts for recharging the optional BA 2015 accupack battery, without having to remove it from the transmitter itself.
- 1680 tunable frequencies within 1785-1800 MHz range for interference-free reception
- Enhanced frequency bank system with up to 12 compatible channels
- Pilot tone squelch for eliminating RF interference when transmitter is turned off
- Enhanced AF frequency range
- Increased range for audio sensitivity
- Wireless synchronization of transmitter via infrared interface
- User-friendly menu operation with more control options
- High-contrast LCD display
- Auto-Lock function avoids accidental changing of settings
- HDX compander for crystal-clear sound
- Transmitter features battery indication in 4 steps
- Handheld transmitter compatible with easy-exchangeable microphone capsules from evolution series
- Contacts for recharging BA 2015 accupack battery directly in the transmitter
- Wide range of accessories adapts the system to any requirement
| 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 |
≥ 110 dBA |
| RF output power |
Max. 30 mW |
| Switching bandwidth |
up to 42 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 |
| Input impedance |
40 kΩ, unbalanced / 1 MΩ |
| Max. Input voltage |
3 Veff |
| Powering |
3 V battery / 2.4 V rechargeable battery |
| Transmission frequency |
Max. 1680 transmitting frequencies, adjustable in 25 kHz steps 20 frequency banks, each with up to 12 factory-preset channels, no intermodulation 1 frequency bank with up to 12 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 (945-S variants only)
The Sennheiser MMD 945 is a supercardioid 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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