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Shure In-Line 3-Pin XLR Radio Frequency Attenuator

BH #SHA15RF • MFR #A15RF
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Shure In-Line 3-Pin XLR Radio Frequency Attenuator
Key Features
  • Reduces Interference from AM Radio
  • Prevents Bleed into Long Cable Mic Lines
The Shure A15RF is an in-line 3-Pin XLR filter, which attenuates extraneous RFI (radio frequency interference) from balanced audio circuits.
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Shure A15RF Overview

The Shure A15RF is an in-line 3-Pin XLR filter, which attenuates extraneous RFI (radio frequency interference) from balanced audio circuits.

RFI Attenuation
Common/differential mode attenuation: 50 ohms in/out
Maximum Operating DC Current Rating
20 mA maximum for each balanced signal line
DC Impedance
0.4 ohm
Operating Temperature Range
-40 to 185°F (-40 to 85°C)
UPC: 042406088855

Shure A15RF Specs

Key Specs
In-Line Accessory Type
Attenuator/Pad
Number of Channels
1
Inputs/Outputs
XLR 3-Pin
Shielded
Yes
General
In-Line Accessory Type
Attenuator/Pad
Input / Output Level
Input: Mic/Line Level
Output: Mic/Line Level
Number of Channels
1
Connectivity
Inputs/Outputs
XLR 3-Pin
Performance
Impedance
0.4 Ohms
Physical
Shielded
Yes
Operating Conditions
-40 to 85°F / -40 to 29°C 
Dimensions
2.75 x 0.75" / 6.99 x 1.91 cm
Packaging Info
Package Weight
0.235 lb
Box Dimensions (LxWxH)
4.75 x 3.35 x 2.3"

Shure A15RF Reviews

We don't want to listen to the local FM station!

By Bob
Rated 5 out of 5
Date: 2021-06-17

Our 125 foot microphone line from the choir to our mixer was picking up the FM station one-quarter mile away. These attenuators did the trick fitting neatly at the end of the line!

Plug & Play - Works Great

By Mark
Rated 5 out of 5
Date: 2020-01-13

We had a local AM radio station bleeding over into our studio audio feed. We plugged in a few of these and the bleed audio was filtered out. Great solution!

See any errors on this page?

Will this filter RFI from the output of my mixer? ...

Will this filter RFI from the output of my mixer? If used at the amp?
Asked by: Derrick
Yes it should filter
Answered by: Raul M
Date published: 2021-11-28
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