Sennheiser hand-held transmitter EW-D SK (R4-9)

Product information "Sennheiser hand-held transmitter EW-D SK (R4-9)"

Digital transmission operating in the UHF spectrum greatly enhances range, reliability and scalability

Smart Assist App connects via Bluetooth Low Energy for a streamlined setup and operation at a distance

Auto scan creates reliable connections with minimal time and effort

134 dB audio input dynamic range eliminates need for sensitivity adjustments and preserves every detail

Elimination of intermodulation enables channels to be placed in an equidistant tuning grid 600 kHz apart

56 MHz of tuning bandwidth and equidistant spacing enables up to 90 channels

2,240 selectable frequencies allow for fine tuning

Lithium-Ion battery pack (sold separately) delivers up to 12 hours of operation (up to 8 hours of operation with 2x provided AA batteries)

Dimensions: 63 x 80 x 20 mm (without antenna)

THD, total harmonic distortion: = -60 dB for 1 kHz @ -3 dBfs input level

Weight: approx. 120 g

Operating temperature: -10 °C - +55 °C (14 °F - 131 °F)

Operating relative humidity: 5 - 95 % (non-condensing)

Audio frequency response: 20 Hz - 20 kHz (-3 dB) @ 3 dBfs

Input voltage range: 2.0 - 4.35 V

Current consumption: < 300 mA

Power supply: 2 AA batteries 1.5 V (alkaline manganese)

or BA 70 rechargeable battery pack

Transmission power Audio link: 10 mW

(Range R4-9) 559 - 607,8 MHz

BLE: max. 10 mW EIRP

Manufacturer "Sennheiser"
Sennheiser stands for excellent quality and enjoys great popularity in the music sector worldwide. Sennheiser's product range includes headphones, microphones, wireless microphone systems, conference and information systems as well as aviation and audiology products.
Sennheiser mainly produces for the music industry, aviation and the entertainment industry. In addition, Sennheiser produces consumer electronics for private customers. The company's first independently developed microphone was the MD2, which they introduced to the market in 1947. The first shotgun microphone followed in 1956. A year later, Sennheiser manufactured 100 different product types. The world's first open headphones appeared in 1968, heralding the success story of Sennheiser headphones. Infrared transmission technology followed in the 1970s and multi-channel wireless transmission in the 1980s. In the early 1990s, Sennheiser produced a limited edition of the famous Sennheiser Orpheus - a handcrafted, electrostatic headphone driven directly by a tube amplifier - which is said to be the most expensive headphone in the world.
Sennheiser - innovations for the audio industry
Sennheiser stands for innovative strength and the highest quality and has received numerous patents and awards. These include two innovation prizes from German industry, the Scientific and Engineering Award, Emmy and Grammy. The consistent further development of technologies in acoustics and electronics is the key to expanding Sennheiser's strong market position.
Sennheiser worldwide
The Sennheiser Group based in Wedemark (Hanover region) is one of the world's leading manufacturers of microphones, headphones and wireless transmission systems. In 2007, the family business, founded in Germany in 1945, achieved sales of more than 395 million euros with a foreign share of over 83%. Sennheiser has almost 2000 employees worldwide, 56% of them in Germany. Sennheiser manufactures in Germany, Ireland and the USA and is represented worldwide by subsidiaries in France, Great Britain, Belgium, the Netherlands, Germany, Denmark (Nordic), Russia, Hong Kong, India, Singapore, Japan, China, Canada, Mexico and the USA as well as through long-term trading partners in many other countries. The companies Georg Neumann GmbH, Berlin (studio microphones), K + H Vertriebs- und Entwicklungsgesellschaft mbH (Klein + Hummel studio monitors, installed sound) and the joint venture Sennheiser Communications A/S (headsets for PC, office and call centers) also belong to Sennheiser Group.

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