Shure A15AS User Manual

MODEL A15AS SWITCHABLE IN-LINE ATTENUATOR
Use this balanced-line attenuator to prevent low-impedance
microphones (rated at 150 or 600 Ω) and high-output condenser
microphones from overloading low impedance inputs in high
sound pressure level applications. The values of attenuation can
be switch selected for 15, 20, or 25 dB.
Use the A15AS with any low-impedance microphone, including
phantom-powered condenser microphones, such as the Shure
SM81. It can be used in line between the microphone and its pow-
er supply. (This model is not suitable for use with the condenser
powering system called “A-B Powering.”)
The A15AS attenuator bridges the microphone output and allows
maximum signal handling with a minimum of loading-caused dis-
tortion or reduction in clipping level.
Model A15AS
User Guide
27B1915 (Rev. 4)
2003, Shure Incorporated
Printed in U.S.A.

Shure A15AS Specifications

General

Impedance	- Ω
Attenuation	25 dB
Connector(s)	female 3-pin XLR connector, male 3-pin XLR connector
Product color	Black
Frequency range	- GHz

Summary

Shure A15AS Switchable In-Line Attenuator Overview

Product Specifications

Frequency Response

Specifies the audio frequency range the attenuator operates within, with a tolerance of ± 0.5 dB.

Impedance Specifications

Details the input impedance (XLR Female) as 1,000 Ω and output impedance (XLR Male) as 150 Ω.

Attenuation Levels

Indicates the selectable attenuation levels available: 15 dB, 20 dB, or 25 dB.

Physical Characteristics

Describes the case as a full magnetic shield, made of steel with a gray enamel finish, and lists dimensions.

Product Guarantee and Shipping

Product Guarantee Information

Covers the two-year warranty against electrical and mechanical defects, including parts and labor.

Shipping and Service Instructions

Provides guidance on how to repack, insure, and return the unit for service, including the address.