Page 2 - Showcase 7; Multichannel Amplifier; WARNINGS
© 2002 by Krell Industries, Inc. All rights reserved P/N 306039 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. KrellCurrent Mode™ ...
Page 3 - Contents; Page
Contents Krell Showcase Amplifier iii INTRODUCTION 1 DEFINITION OF TERMS 2 UNPACKING 3 PLACEMENT 4 AC Power Guidelines 4 FRONT PANEL DESCRIPTION 6 BACK PANEL DESCRIPTION 8 CONNECTING THE SHOWCASE AMPLIFIER TO YOUR SYSTEM 10 Input and Output Connections 10 AMPLIFIER OPERATION 12 On/Off and Operation ...
Page 4 - FIGURE 1; Illustrations
iv Krell Showcase Amplifier FIGURE 1 The Showcase Amplifier Front Panel 5 FIGURE 2 The Showcase Amplifier Back Panel 7 Illustrations Page
Page 5 - Thank you for your purchase of a Krell Showcase Amplifier.; Introduction
Krell Showcase Amplifier 1 Thank you for your purchase of a Krell Showcase Amplifier. The Showcase Amplifier is a flexible design that delivers five, six, or seven channels of amplification. All three configurations includeinput and output connections for all seven channels. The amplifiersdiffer onl...
Page 6 - Definition of Terms
2 Krell Showcase Amplifier Following are the definitions of key terms used in your owner’s ref-erence manual. Balanced A symmetrical input or output circuit that has equal impedance fromboth input terminals to a common ground reference point. Theindustry standard for professional and sound recording...
Page 7 - Unpacking
Unpacking Krell Showcase Amplifier 3 1. Open the shipping box, and remove the top layer of foam. Thefollowing items are visible: 1 Showcase Amplifier 1 Accessory Kit containing: 1 AC power cord1 12 VDC output (12 V trigger) cable 1 spare AC mains fuse 1 10 A slow-blow fuse for 100 –120 VAC 1 5 A slo...
Page 8 - Placement
4 Krell Showcase Amplifier Before you integrate the Showcase Amplifier into your system,review the following guidelines to choose the location for the com-ponent. This will facilitate a clean, trouble-free installation. The Showcase Amplifier requires at least two inches (5 cm) ofclearance on each s...
Page 9 - Figure 1 The Showcase Amplifier Front Panel
1 Power Button2 Stand-by LED3 Power LED S H O W C A S E AMPLIFIER 2 1 3 STAND-BY POWER Figure 1 The Showcase Amplifier Front Panel
Page 10 - Front Panel Description
The Showcase Amplifier front panel provides power on and indi-cates operating status. 1 Power Button Use this button to switch the Showcase Amplifier power betweenthe stand-by and the operational modes and also to switch the 12VDC output (12 V trigger) on and off. 2 Stand-by LED The red stand-by LED...
Page 11 - Figure 2 The Showcase Amplifier Back Panel
6 4 5 7 8 9 OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 Showcase Multi-channel Amplifier KRELL INDUSTRIES, INC. 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA 50/60 Hz MADE IN USA 30mA max. OUT IN 12VDC NO USER SERVICEABLE PARTS I...
Page 12 - Back Panel Description; BALANCED INPUTS; 12 VDC Remote Power Out
Back Panel Description See Figure 2 on page 7 8 Krell Showcase Amplifier The Showcase Amplifier back panel provides connections for allinputs and outputs, remote connection input and output links, andthe AC power supply. 4 Inputs 1-7 The Showcase Amplifier has seven channel inputs for outputdevices ...
Page 13 - 12 VDC Remote Power In
Krell Showcase Amplifier 9 Back Panel Description, continued 8 12 VDC Remote Power In The Showcase Amplifier is equipped with an input that receives 12VDC power on/off (12 V trigger) signals from other Krell compo-nents and other devices that incorporate a 12 V trigger. This allowsyou to turn the Sh...
Page 14 - Connecting the Showcase Amplifier to Your System; The XLR pin configuration is described below:
Connecting the Showcase Amplifier to Your System 10 Krell Showcase Amplifier The Showcase Amplifier is equipped with balanced and single-ended inputs. Krell recommends using balanced interconnect cables. Balancedinterconnect cables not only can minimize sonic loss but are alsoimmune to induced noise...
Page 15 - Connect the loudspeaker cables to the Showcase Amplifier; Plug the end of the AC power cord into the AC wall outlet.
Connecting the Showcase Amplifier, continued Krell Showcase Amplifier 11 4. Connect the loudspeaker cables to the Showcase Amplifier channel output binding posts (6) located on the back panel. The Showcase 5 uses only outputs 1-5 and has caps on thespeaker binding posts for channels 6 and 7. The Sho...
Page 16 - Amplifier Operation; When powering up your system, turn the amplifiers
Amplifier Operation 12 Krell Showcase Amplifier When powering up your system, turn the amplifiers on last. When powering down your system, turn amplifiers off first. The proce- dures for amplifier operation follow. 1. Plug the end of the AC power cord into the AC wall outlet. 2. The red stand-by LED...
Page 17 - Troubleshooting System Noise
Troubleshooting System Noise Krell Showcase Amplifier 13 When you mix and match high-performance audio components,each with its own ground potential, a low frequency hum may occurin one or all loudspeakers. If this happens when you place theShowcase Amplifier into your system, follow these simple tr...
Page 18 - Questions and Answers
Questions and Answers 14 Krell Showcase Amplifier Q. Should I turn the Showcase Amplifier off (unplug the amplifier)when not playing music? A. No. Leave the Showcase Amplifier in the stand-by mode whennot playing music. The stand-by mode avoids cold starts as wellas minimizes heat output and power c...
Page 19 - Warranty
To register your product for warranty benefits, pleasecomplete and return theWarranty Registration Cardenclosed in the shipping boxwithin 15 days of purchase.Thank you. This Krell product has a limited warranty of five years for parts and labor on circuitry. Shouldthis product fail to perform at any...
Page 20 - before; To contact the Krell Service Department:
16 Krell Showcase Amplifier Return Authorization Procedure If you believe there is a problem with your component, please con-tact your dealer, distributor, or the Krell factory to discuss the problem before you return the component for repair. To expedite service, you may wish to complete and e-mail...
Page 21 - Specifications
Krell Showcase Amplifier 17 Specifications Showcase 7, Showcase 6, Showcase 5 Showcase 7 Showcase 6 Showcase 5 FREQUENCY RESPONSE 20 Hz to 20 kHz 20 Hz to 20 kHz 20 Hz to 20 kHz +0 dB, -0.15 dB +0 dB, -0.15 dB +0 dB, -0.15 dB .2 Hz to 95 kHz .2 Hz to 95 kHz .2 Hz to 95 kHz +0 dB, -3 dB +0 dB, -3 dB ...
