Sennheiser EW-D SKM-S Digital Wireless Base Set (S4-7) 630 - 662 MHz

Sennheiser 508764 (50-87-64, 50/87/64, 50 87 64, 50/87-64) EW-D SKM-S Digital Wireless Base Set (S4-7)

A versatile wireless set designed for digital applications, featuring a stationary receiver and handheld transmitter compatible with a wide range of Evolution Wireless Digital microphone heads.

This feature-packed digital wireless system is perfect for speakers and singers, offering seamless pairing and management through the EW-D Smart Assist App. Built with a durable metal housing, the robust bodypack transmitter is ideal for everyday stage use.

Raising the bar

Evolution Wireless Digital sets a new standard by offering more dynamic range than any other wireless system on the market. It automatically locks onto the most reliable signal within seconds and supports scalability of up to 90 channels, thanks to its 56 MHz tuning bandwidth. It's clear that this wireless system truly stands in a league of its own.

Equidistant Spacing – simpler than it sounds

Evolution Wireless Digital incorporates an equidistant tuning grid, a feature previously exclusive to our flagship Digital 6000 and Digital 9000 systems. Its high-quality components with exceptional linearity eliminate intermodulation between EW-D transmitters, enabling frequencies to be evenly spaced every 600 kHz. This simplifies frequency coordination, making it easy for both wireless novices and professionals, while also enhancing the system's scalability and impressive channel capacity.

An engineer in your pocket

With Bluetooth Low Energy, the Sennheiser Smart Assist app gives you full control at your fingertips. Enjoy a lightning-fast automated setup, mobile access to every system setting, and the ability to remotely monitor your equipment—all from your Android or iOS device. Save time, conserve energy, and perform with confidence.

System

• Frequency range (S4-7): 630 - 662 MHz
• Bluetooth® Low Energy (BLE) frequency range: 2402 - 2480 MHz
• Audio frequency response: 20 Hz - 20 kHz (-3 dB), @ 3 dBfs
• Audio THD: ≤ -60 dB for 1 kHz, @ -3 dBfs input level
• Dynamic range: 134 dB
• System latency: 1.9 ms
• Operating temperature: -10 °C - +55 °C (14 °F - 131 °F)
• Relative humidity: 5 - 95 % (non-condensing)

EW-D EM (Rack Receiver)

• Input voltage: 11 - 13 V ⎓
• Input current: ≤ 300 mA
• Transmit power (radiated): BLE: max. 10 mW EIRP
• Audio output power: 18 dBu max.
• Dimensions: 212 x 44 x 189 mm (8.35" x 1.73" x 7.44")
• Weight (without antennas and power supply): approx. 1000 g (2.2  lbs

EW-D SKM-S (Handheld Transmitter)

• Input voltage: 2.0 - 4.35 V
• Input current: < 300 mA
• Power supply: 2 AA batteries 1.5 V (alkali manganese) or BA 70 rechargeable battery pack
• Occupied bandwidth: 200 kHz
• Transmit power (radiated): Audio link: 10 mW ERP (Range Y1-3: 12 mW ERP) BLE: max. 10 mW EIRP
• Dimensions: (ø x l) (incl. MMD  835 microphone module) (without microphone module), 50 x 268 mm (1.97" x 10.55"), 40 x 200 mm (1.57" x 7.87")
• Weight (without batteries) (incl. MMD  835 microphone module): approx. 304 g (0.67  lbs)
• (without microphone module): approx. 195 g (7.14 lbs)

Set in packaging

• Dimensions: 405 x 350 x 73 mm (15.91" x 13.78" x 2.87")
• Weight: 2.9 kg (6.39 lbs)

In The Box

• EW-D EM rack receiver
• EW-D SKM-S handheld transmitter
• MZQ 1 microphone clamp
• 2 rod antennas
• power supply with country adapters
• Rackmount set
• 4 rubber feet
• quick guide
• safety guide
• manufacturer declaration sheet