Shure A15RF User Manual

1/3
A15RF -- In-Line Interference Attenuator
General Description
The Shure Model A15RF In-Line RF Attenuator
provides all types of balanced audio systems
with greatly improved immunity to radio frequen
cy interference (RFI). It is especially useful in ap
plications where balanced audio devices near
strong RFI sources, such as AM radio stations,
are connected by long cable runs.
The A15RF will not degrade system sound quality
or alter system frequency response. In cases
where interference is present but not audible, the
A15RF can improve perceived sound quality by
removing low level interference components
from the audio signal path. It passes phantom
power and is transparent to differential audio sig
nals ranging from DC to 2 GHz.
The A15RF is a passive device and will not dam
age other equipment. It does not present any ad
ditional load to the signal sources, and can be
used with phantompowered miclevel or linelev
el devices.

Shure A15RF Specifications

General

Category	Control Unit
Type	RF Attenuator
Impedance	50 Ohms
Connector	BNC
Attenuation	15 dB

Summary

A15RF In-Line Interference Attenuator

General Description

Provides balanced audio systems with improved immunity to radio frequency interference (RFI).

Installation

Specifications

Attenuation

Specifies common and differential mode attenuation values of 50 Ω In/Out.

RFI Attenuation

Common Mode Attenuation

Graph showing common mode attenuation levels in dB versus frequency in MHz.

Differential Mode Attenuation

Graph illustrating differential mode attenuation levels in dB versus frequency in MHz.