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Krell Industries 7 - page 1
Instructions for Use Owner ’ s Reference THE LEADER IN AUDIO ENGINEERING Showcase 7 Showcase 6 Showcase 5 Multi channel Amplifier ...
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Krell Industries 7 - page 2
© 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. Krell Current Mode™ is a trademark of Krell Industries, Inc. All ...
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Krell Industries 7 - page 3
Contents Krell Showcase Amplifier iii INTRODUCTION 1 DEFINITION OF TERMS 2 UNP ACKING 3 PLACEMENT 4 AC Power Guidelines 4 FRONT P ANEL DESCRIPTION 6 BACK P ANEL DESCRIPTION 8 CONNECTING THE SHOWCASE AMPLIFIER TO YOUR SYSTEM 10 Input and Output Connections 10 AMPLIFIER OPERA TION 12 On/Off and Operation 12 TROUBLESHOOTING SYSTEM NOISE 13 QUESTIONS A ...
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Krell Industries 7 - page 4
iv Krell Showcase Amplifier FIGURE 1 The Showcase Amplifier Front Panel 5 FIGURE 2 The Showcase Amplifier Back Panel 7 Illustrations Page ...
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Krell Industries 7 - page 5
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 include input and output connections for all seven channels. The amplifiers differ only by how many channels are housed within the am ...
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Krell Industries 7 - page 6
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 from both input terminals to a common ground reference point. The industry standard for professional and sound recording installations, balanced connections have 6 ...
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Krell Industries 7 - page 7
Unpacking Krell Showcase Amplifier 3 1. Open the shipping box, and remove the top layer of foam. The following items are visible: 1 Showcase Amplifier 1 Accessory Kit containing: 1 AC power cord 1 12 VDC output (12 V trigger) cable 1 spare AC mains fuse 1 10 A slow-blow fuse for 100 –120 V AC 1 5 A slow-blow fuse for 220 – 240 V AC 1 packet con ...
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Krell Industries 7 - page 8
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) of clearance on each side and at least two inches (5 cm) of clearance ...
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Krell Industries 7 - page 9
1 Power Button 2 Stand-by LED 3 Power LED SHO WCASE AMPLIFIER 2 1 3 STAND-BY POWER Figure 1 The Showcase Amplifier Front Panel ...
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Krell Industries 7 - page 10
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 between the stand-by and the operational modes and also to switch the 12 VDC output (12 V trigger) on and off. 2 Stand-by LED The red stand-by LED illuminates when the AC power cord is plugged ...
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Krell Industries 7 - page 11
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 INSIDE Figure 2 The Showcase Amplifier Back Panel B ...
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Krell Industries 7 - page 12
Back Panel Description See Figure 2 on page 7 8 Krell Showcase Amplifier The Showcase Amplifier back panel provides connections for all inputs and outputs, remote connection input and output links, and the AC power supply . 4 Inputs 1-7 The Showcase Amplifier has seven channel inputs for output devices with balanced XLR connectors. 5 Inputs 1-7 The ...
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Krell Industries 7 - page 13
Krell Showcase Amplifier 9 Back Panel Description, continued 8 12 VDC Remote Power In The Showcase Amplifier is equipped with an input that receives 12 VDC power on/off (12 V trigger) signals from other Krell compo- nents and other devices that incorporate a 12 V trigger . This allows you to turn the Showcase Amplifier on and off using a Krell or o ...
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Krell Industries 7 - page 14
Connecting the Showcase Amplifier to Y our System 10 Krell Showcase Amplifier The Showcase Amplifier is equipped with balanced and single-ended inputs. Krell recommends using balanced interconnect cables. Balanced interconnect cables not only can minimize sonic loss but are also immune to induced noise, especially with installations using long cabl ...
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Krell Industries 7 - page 15
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 the speaker binding posts for channels 6 and 7. The Showcase 6 uses outputs 1-6 and has caps on the spe ...
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Krell Industries 7 - page 16
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 (2) illuminates. When the amplifier is first plu ...
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Krell Industries 7 - page 17
T roubleshooting 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 occur in one or all loudspeakers. If this happens when you place the Showcase Amplifier into your system, follow these simple trou- bleshooting steps: 1. Check that all input ...
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Krell Industries 7 - page 18
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 when not playing music. The stand-by mode avoids cold starts as well as minimizes heat output and power consumption. T urn the amplifier off if you plan ...
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Krell Industries 7 - page 19
T o register your product for warranty benefits, please complete and return the Warranty Registration Card enclosed in the shipping box within 15 days of purchase. Thank you. This Krell product has a limited warranty of five years for parts and labor on circuitry . Should this product fail to perform at any time during the warranty , Krell will rep ...
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Krell Industries 7 - page 20
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 . T o expedite service, you may wish to complete and e-mail the Service Request Form in the Service sect ...
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Krell Industries 7 - page 21
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 +0 dB, -3 dB SIGNAL T O NOISE RA TIO >1 10 dB & ...
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Krell Industries 7 - page 22
Krell Industries, Inc. 45 Connair Road Orange, CT 06477-3650 USA TEL 203-799-9954 F AX 203-891-2028 E-MAIL krell@krellonline.com WEBSITE http://www .krellonline.com Showcase 7 Showcase 6 Showcase 5 Multichannel Amplifier v 02.1 ...
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