Shure A15RF Quick Start Manual

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 phantom­powered mic­level or line­lev­
el devices.
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