Sennheiser AD 3700 Active Directional Receiver Antenna (470-866 MHz)

Active directional antenna with adjustable gain for focused wireless coverage with Sennheiser 2000-6000 Series receivers

The Sennheiser AD 3700 is an active directional receiver antenna covering 470 to 866 MHz with adjustable amplification at 5, 10, or 15 dB. Unlike the omnidirectional A 3700, the AD 3700 uses a directional pickup pattern that focuses RF sensitivity toward the performance area while rejecting interference from behind and to the sides, providing cleaner reception in RF-congested environments.

The directional pattern is particularly valuable in large venues, multi-stage festivals, and broadcast environments where multiple wireless systems operate simultaneously. By narrowing the antenna's field of reception, the AD 3700 reduces pickup of off-axis interference from neighboring stages, production equipment, and external RF sources, resulting in more reliable wireless operation across all channels.

Key Features

• Active directional antenna with focused pickup pattern
• Adjustable gain: 5 dB, 10 dB, or 15 dB
• Wideband coverage: 470-866 MHz
• BNC connector with 3/8-inch mounting thread
• DC power via coaxial cable from compatible receivers
• Compatible with EM 2000, 2050, 3731, 3732, and 6000 receivers

Professional Applications

Commonly deployed in church, house of worship, and professional AV environments.

• Large venue and arena wireless systems requiring focused coverage
• Multi-stage festivals where RF interference from adjacent stages is a concern
• Broadcast facilities with congested RF environments
• Long-throw antenna deployments in theaters and performance halls

Frequently Asked Questions

When should I use the AD 3700 instead of the A 3700?

Use the AD 3700 when you need to focus reception on a specific area and reject interference from other directions. Use the A 3700 (omnidirectional) when performers move throughout a 360-degree area and you need coverage from all directions.

Can the AD 3700 be used for in-ear monitor transmitting?

The AD 3700 is designed as a receiver antenna. While directional antennas can be used for transmitting, consult Sennheiser technical documentation for IEM transmitter antenna recommendations specific to your deployment.

Related Equipment and Workflow Compatibility

The AD 3700 is designed for Sennheiser EM 2000, EM 2050, EM 3731, EM 3732, and EM 6000 receivers. It is powered via DC bias on the coaxial cable and can be combined with antenna splitters for multi-receiver distribution.

Why Professionals Use This Type of Product

• Directional pattern rejects off-axis interference for cleaner reception
• Adjustable gain compensates for cable loss in long antenna runs
• Wideband 470-866 MHz covers multiple frequency coordination ranges
• Essential for multi-stage festivals and RF-congested environments

Additional Compatibility Information

The Sennheiser AD 3700 is an active directional receiver antenna with adjustable 5/10/15 dB gain, covering 470-866 MHz, powered via DC bias from Sennheiser 2000, 3000, and 6000 Series rackmount receivers.