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Theater Amplifier
Standard
Multichannel Amplifier
Instructions for Use
v 02.0Krell Industries, Inc.
45 Connair Road
Orange, CT 06477-3650 USA
TEL 203-799-9954
FAX 203-891-2028
E-MAIL krell@krellonline.com
WEBSITE http://www.krellonline.com
This product is manufactured in the United States of America. Krell ®is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell
Industries, Inc., its subsidiaries, and authorized agents. Multi Amp Throughput-„¢ and Krell Current Mode-„¢ are trademarks of Krell Industries, Inc. All other
trademarks and tradenames are registered to their respective companies.
This product complies with the EMC directive (89/336/EEC) and the low-voltage directive (73/23/EEC).
WARNINGS
The amplifier must be placed on a firm, level surface where it is not exposed to dripping or splashing.
The ventilation grids on the top, bottom, and sides of the amplifier must be unobstructed at all times during
operation. Do not place flammable material above or beneath the amplifier.
Contact your authorized Krell dealer, distributor, or Krell before using any devices designed to alter or stabi-
lize the AC power for the Theater Amplifier Standard.
Before connecting the Theater Amplifier Standard, make sure the amplifier is turned off and any output
device (such as a preamplifier) is in mute or stand-by mode. Make sure all cable terminations are of the
highest quality and free from frayed ends, short circuits, or cold solder joints.
Use only one set of inputs to the amplifier at a time.
Make sure that only one switch on an input switch bank is in the up (on) position at one time.
Do not connect the multichannel (DB-25) input and the single-ended or balanced inputs at the same time.
THERE ARE NO USER SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.
Please contact your authorized Krell dealer, distributor, or Krell if you have any questions not addressed in
this reference manual.
©2001 by Krell Industries, Inc. All rights reservedP/N 305221
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Krell Theater Amplifier Standard iii
Contents Page
INTRODUCTION 1
DEFINITION OF TERMS 2
UNPACKING 4
PLACEMENT 5
AC Power Guidelines 5
FRONT PANEL DESCRIPTION: THEATER AMPLIFIER STANDARD 7
BACK PANEL DESCRIPTION: THEATER AMPLIFIER STANDARD 9
CONNECTING THE THEATER AMPLIFIER STANDARD TO YOUR SYSTEM 11
Input and Output Connections 11
AMPLIFIER OPERATION 13
On/Off and Operation 13
Using a Dedicated Wall Switch 13
TROUBLESHOOTING SYSTEM NOISE 14
RECONFIGURATION OPTIONS FOR THE THEATER AMPLIFIER STANDARD 15
To Safely Access the Input Switch Banks 15
Amplifier Factory Default Settings 18
Reconfiguring the Theater Amplifier Standard for MAT Operation 18
Reconfiguring the Theater Amplifier Standard for Bridged Operation 22
Reconfiguring the Theater Amplifier Standard
for Combined MAT and Bridged Operation 24
Example of a Connection Scenario: Multi-power Mode 25
QUESTIONS AND ANSWERS 27
WARRANTY 28
RETURN AUTHORIZATION PROCEDURE 29
SPECIFICATIONS 30
