Shure A15AS User Manual

Model A15AS

User Guide

MODEL A15AS SWITCHABLE IN-LINE ATTENUATOR

Use this balanced-line attenuator to prevent low-impedance
microphones (rated at 150 or 600 ) 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
power 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 loading­caused distortion or reduction in clipping level.

©2009 Shure Incorporated
27C1915 (Rev. 7)

Printed in U.S.A.

SPECIFICATIONS

Frequency Response

Flat, 20 to 20,000 Hz 0.5 dB

Impedance

Input (XLR Female): 1,000 
Output (XLR Male): 150 

Attenuation (switch selectable)

15 dB, 20 dB, or 25 dB

Case

Full magnetic shield; steel with gray enamel finish

Dimensions

19 mm (3/4 in.) diameter; 114 mm (4 1/2 in.) long

NOTE: The equivalent single series simplex-powering resistance
is 215 ; this resistance should be considered in addition to any
existing circuit resistance when using the attenuator.

LIMITED WARRANTY

Shure Incorporated (“Shure”) hereby warrants to the original consumer purchaser only that this
product will be free in normal use of any defects in materials and workmanship for a period of two (2)
years from the consumer’s original date of purchase directly from Shure or from a Shure-authorized
reseller. At its sole option, Shure will repair or replace the defective product and promptly return it to
you. In order for this warranty to be valid, the consumer must, at the time the product is returned,
provide proof of purchase in the form of the original purchase receipt directly from Shure or from a
Shure-authorized reseller. If Shure elects to replace the defective product, then Shure reserves the
right to replace the defective product with another product of the same model or a model of at least
comparable quality and features in Shure’s sole determination.

If you believe this product is defective within the warranty period, carefully repack the unit, insure it and
return it with proof of purchase, postage prepaid, to Shure Incorporated, Attention: Service
Department, at the address below.

Outside of the United States, return the product to your dealer or Authorized Service Center.
Addresses are lis ted on www.Shure.com or can be obtained by contacting Shure at the address listed
below.

This warranty is not transferable. This warranty does not apply in cases of abuse or misuse of the
product, use contrary to Shure’s instruction, ordinary wear and tear, an act of God, negligent use,
purchase from a party other than Shure or a Shure-authorized reseller, unauthorized repair, or
modification of the product.

ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE ARE HEREBY DISCLAIMED TO THE EXTENT PERMITTED UNDER A PPLICABLE
LAWS AND, TO THE EXTENT NOT PERMITTED, ARE HEREBY LIMITED TO THE DURATION AND
TERMS OF THIS WARRANTY.

SHURE ALSO HEREBY DISCLAIMS ALL LIABILITY FOR INCIDENTAL, SPECIAL, OR
CONSEQUENTIAL DAMAGES.

Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or
limitation of incidental or consequential damages, so the above limitation may not apply to you. This
warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This warranty does not restrict the rights of the consumer mandated under applicable laws.

THIS WARRANTY SUPERSEDES ALL OTHER WARRANTIES THAT ARE ASSOCIATED OR
INCLUDED WITH THIS PRODUCT.

Shure Incorporated
Attention: Service Department
5800 W. Touhy Avenue
Niles, IL 60714-4608 U.S.A.

SHURE Incorporated http://www.shure.com

United States, Canada, Latin America, Caribbean:

Phone: [phone] U.S. Fax: [phone] Intl Fax: [phone]

Shure Europe GmbH, Phone: [phone] Fax: [phone]

Shure Asia Limited, Phone: [phone] Fax: [phone]

5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.

Europe, Middle East, Africa:

Asia, Pacific: