Shure A15RF | In-Line RF Interference Attenuator

The Shure A15RF In-Line RF Interference Attenuator is the ultimate solution for reducing unwanted RF interference in your audio setups. Designed with excellence by Shure, a leading name in audio equipment, this attenuator is specifically engineered to minimize the intrusion of AM radio signals that often bleed into microphone lines, especially when using extended cables for installations such as suspending choir microphones. By incorporating this system, you're ensuring a cleaner, more accurate audio signal free of disruptive noise, essential for live performances, studio recordings, and any professional audio applications.

Made for versatility, the Shure A15RF passes phantom power and can be effectively used with condenser microphones. The optimal installation location for the A15RF is at the end of the cable nearest to the microphone, ensuring maximum interference reduction. However, it can also be placed at the mixer input when necessary, although the RF attenuation might be slightly reduced. In cases of severe RF interference, multiple A15RF attenuators can be used in series along the same microphone line, ideally placing one at each end of the cable. This adaptable device improves the perceived sound quality by eliminating low-level interference components from your audio signal path.

Count on Shure's precision and reliability with the A15RF's robust construction and proven effectiveness. Whether you are an audio professional or an enthusiast, the Shure A15RF will help you achieve superior, interference-free sound with ease and confidence. It's an indispensable tool for anyone serious about maintaining the integrity of their audio signals.

Key Features

• Reduces interference from AM radio stations
• Passes phantom power, compatible with condenser microphones
• Best performance when installed nearest to the microphone
• Can be used in series for extreme RF interference conditions
• Enhances sound quality by removing low-level interference
• Full magnetic shield with steel casing and black chrome plating

Specifications

• RFI Attenuation: Common Mode Attenuation
• 50 Ohms In/Out Differential Mode Attenuation
• Maximum Operating DC Current Rating: 20 mA per balanced signal line
• DC Impedance: 0.4 Ohm
• Operating Temperature Range: -40° to +85° C (-40° to 185° F)
• Case: Full magnetic shield, steel with black chrome plating
• Dimensions: 19 mm (3/4 in.) diameter; 69.85 mm (2 3/4 in.) long
• Weight: 0.2 lb.

Package Contents

• 1 x Shure A15RF In-Line RF Interference Attenuator
• Product documentation