Krell KAV-400-XI Owners manual

KAV–400xi

Remote Control

THE LEADER IN AUDIO ENGINEERING

Integrated Amplifier

Instructions for Use

Owner’s Reference

KAV– 400xi

Remote Control Integrated Amplifier

Instructions for Use

v 03.0

CONTACT	Krell Industries, Inc.
INFORMATION	45 Connair Road
	Orange, CT 06477-3650 USA
	TEL [phone]
	FAX [phone]
	E-MAIL [e-mail]
	WEBSITE http://www.krellonline.com

	This product complies with the EMC directive (89/336/EEC) and the low-voltage
	directive (73/23/EEC).
WARNINGS	Do not place the integrated amplifier where it could be exposed to dripping or
	splashing.
	The ventilation grids on the top and bottom of the KAV–400xi must be unob-
	structed at all times during operation. Do not place flammable material on top of
	or beneath the component.
	When making connections to this or any other component, make sure all compo-
	nents are off. Turn off all systems’ power before connecting the KAV–400xi to any
	other component. Make sure all cable terminations are of the highest quality, free
	from frayed ends, short circuits, or cold solder joints.
	THERE ARE NO USER-SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.
	Please contact your authorized dealer, distributor, or Krell if you have any ques-
	tions not addressed in this reference manual.

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™ and Theater Throughput™ are trademarks of Krell Industries, Inc. All other trademarks and tradenames are registered to their respective companies.

© 2003 by Krell Industries, Inc. All rights reserved

P/N 306733

Contents

	Page
INTRODUCTION	1
DEFINITION OF TERMS	2
UNPACKING	4
PLACEMENT	5
AC Power Guidelines	5
Power Cord	5
FRONT PANEL / REMOTE CONTROL DESCRIPTION	7
REMOTE CONTROL ONLY	9
Battery Installation and Removal	9
Remote Control Only Functions	9
BACK PANEL DESCRIPTION	12
CONNECTING THE KAV– 400xi TO YOUR SYSTEM	14
Connection Steps	14
OPERATING YOUR KAV– 400xi	15
Amplifier Operation	15
Tape Input and Output	16
OPTIONAL CONFIGURATIONS	17
Configuring the KAV– 400xi for Theater Throughput	17
Preamplifier Output	18
HOW TO TROUBLESHOOT SYSTEM NOISE	19
QUESTIONS AND ANSWERS	20
WARRANTY	21
RETURN AUTHORIZATION PROCEDURE	22
SPECIFICATIONS	23

Krell KAV–400xi

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Illustrations

		Page
FIGURE 1	The KAV– 400xi Front Panel	6
FIGURE 2	The KAV– 400xi Remote Control	6
FIGURE 3	The KAV– 400xi Back Panel	11

iv	Krell KAV–400xi

Introduction

Thank you for your purchase of the Krell KAV–400xi Remote Control Integrated Amplifier. This fully integrated amplifier and preamplifier has a fully balanced signal path from input to output and employs a wide bandwidth design with low negative feedback for sonic accuracy throughout the frequency spectrum. All circuits up to the driver stage are pure Class A.

Krell’s new surface mount technology (SMT) means that the KAV–400xi is an integrated amplifier with big power—200 Watts per channel—that does not require big space. SMT allows individ-

ual circuit elements to be placed very close together. This shortens signal paths and allows circuit elements to operate at the same temperature, resulting in more accurate signal transfer and enhanced reliablilty.

The KAV–400xi is easy to operate and integrate into your system. The remote control accesses all amplifier functions, and remote control connection options allow the KAV–400xi to be easily connected with other components. The Theater Throughput feature provides easy integration of the amplifier into a home theater system.

This owner’s reference manual contains important information on the placement, installation, and operation of the KAV–400xi. Please read this information carefully. A thorough understanding of these details will help ensure satisfactory operation and long life for your KAV–400xi and related system components.

Krell KAV–400xi

1

Definition of Terms

	Following are the definitions of key terms used in your owner’s ref-
	erence manual.
CONFIGURATIONS	Theater Throughput

INPUT AND OUTPUT CONNECTIONS

OPERATION

Theater Throughput is a Krell configuration option that allows the signal from a surround preamp/processor to pass through a Krell preamplifier or integrated amplifier with no gain, for integrated volume and balance management of Krell home theater systems.

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 dB more gain than singleended connections and allow the use of long interconnect cables. Balanced connections are completely immune to induced noise from the system or the environment.

Single-ended

A two-wire input or output circuit. Use care when using singleended connections as the ground connection is made last and broken first. Turn the system off prior to making or breaking singleended connections. Single-ended connections are not recommended for connections requiring long cable runs.

Off

The component is off when the AC power cord is unplugged from the wall receptacle.

Stand-by Mode

A low power consumption status that keeps the audio circuits at idle. When you plug the AC power cord into the wall receptacle, the red stand-by LED illuminates. The component is now ready to be switched to the operational mode. Krell recommends leaving the component in the stand-by mode when it is not playing music.

Operational Mode

When the component is in the stand-by mode, and you press the power button on the front panel or the power key on the remote control, the blue power LED illuminates. The component is in the operational mode and is ready to play music.

2	Krell KAV–400xi

Definition of Terms, continued

TECHNOLOGY	Krell Current Mode
	A proprietary Krell circuit topology in which the audio gain stages
	of a component operate in the current rather than voltage domain.
	This unique technology provides the component with exceptional
	speed and a wide bandwidth.

Krell KAV–400xi

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Unpacking

	Follow these steps to safely unpack the KAV–400xi:
	1. Open the shipping box and remove the top layer of foam. The
	KAV–400xi and the KAV–400xi accessory kit containing the
	following items are visible:
	1	AC power cord
	1	12 VDC (12 V trigger) cable
	2	spare loudspeaker fuses (AGC 8)
	1	KAV–400xi remote control
	1	CR2025 lithium battery
	1	packet containing the Quick Setup Guide
		and the warranty registration card
	2. Grasp the underside of the amplifier and lift it straight out of
	the packing box.
	3. Place the amplifier in a safe location and remove the protective
	plastic wrapping.
	If any of these items are not included please contact your authorized
Notes
	Krell dealer.

Save all packing materials. If you must ship your KAV– 400xi in the future, repack the unit in its original packaging to prevent shipping damage.

4	Krell KAV–400xi

Placement

AC Power

Guidelines

Power Cord

Before you install the KAV–400xi into your system, review the following guidelines to choose the location for the KAV–400xi. This will facilitate a clean, trouble-free installation. The KAV–400xi does not require any type of special rack or cabinet for installation. For the dimensions of the KAV–400xi, see Specifications, on the back cover.

Place the KAV–400xi on a firm, level surface, away from excessive heat, humidity, or moisture. The KAV–400xi requires at least two inches (5 cm) of clearance on each side and at least two inches (5 cm) of clearance above and below the component to provide adequate ventilation. Installations inside cabinetry may need extra ventilation.

The KAV–400xi is not hum-sensitive. Other components may be placed on or around the KAV–400xi (make sure ventilation grids remain unobstructed).

Place the amplifier as close to the loudspeakers as possible and keep loudspeaker cable lengths to a minimum. Loudspeaker cable adds impedance to the load the amplifier must drive, regardless of the cable’s gauge. All Krell amplifiers drive the lowest impedances with ease, but long loudspeaker cables reduce the maximum power that can be delivered to the loudspeakers.

The KAV–400xi has superb regulation and does not require a dedicated AC circuit. Avoid connections through extension cords or multiple AC adapters. High quality 15 amp grounded AC strips are acceptable. High quality AC line conditioners or filters may be used if they are grounded and meet or exceed the unit’s maximum power consumption of 1800 Watts.

The KAV–400xi should be operated only with the power cord supplied. Please contact your authorized Krell dealer, distributor, or Krell before using any devices designed to alter or stabilize the AC power for the KAV–400xi.

Krell KAV–400xi

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