Page 2 - WARNINGS
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....
Page 3 - Contents; Page
Krell KAV– 400xi iii 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 ...
Page 4 - Illustrations; FIGURE 1 The KAV– 400xi Front Panel
iv Krell KAV– 400xi Illustrations FIGURE 1 The KAV– 400xi Front Panel 6 FIGURE 2 The KAV– 400xi Remote Control 6 FIGURE 3 The KAV– 400xi Back Panel 11 Page
Page 5 - Introduction
Krell KAV– 400xi 1 Introduction Thank you for your purchase of the Krell KAV– 400xi RemoteControl Integrated Amplifier. This fully integrated amplifier and pre-amplifier has a fully balanced signal path from input to output andemploys a wide bandwidth design with low negative feedback forsonic accur...
Page 6 - Definition of Terms; OPERATION
Definition of Terms OPERATION Following are the definitions of key terms used in your owner’s ref-erence manual. Theater ThroughputTheater Throughput is a Krell configuration option that allows thesignal from a surround preamp/processor to pass through a Krellpreamplifier or integrated amplifier wit...
Page 7 - TECHNOLOGY
Definition of Terms, continued Krell Current ModeA proprietary Krell circuit topology in which the audio gain stagesof a component operate in the current rather than voltage domain.This unique technology provides the component with exceptionalspeed and a wide bandwidth. TECHNOLOGY Krell KAV– 400xi 3
Page 8 - Unpacking; Follow these steps to safely unpack the KAV– 400xi:
4 Krell KAV– 400xi Unpacking Follow these steps to safely unpack the KAV– 400xi: 1. Open the shipping box and remove the top layer of foam. TheKAV– 400xi and the KAV– 400xi accessory kit containing thefollowing items are visible: 1 AC power cord1 12 VDC (12 V trigger) cable2 spare loudspeaker fuses ...
Page 9 - Placement; Specifications; Power Cord
Krell KAV– 400xi 5 Placement Before you install the KAV– 400xi into your system, review the fol-lowing guidelines to choose the location for the KAV– 400xi. Thiswill facilitate a clean, trouble-free installation. The KAV– 400xi doesnot require any type of special rack or cabinet for installation. Fo...
Page 11 - Front Panel / Remote Control Description; Tape Input and Output; POWER
Front Panel / Remote Control Description See Figures 1 and 2 on page 6 Krell KAV– 400xi 7 Power, analog input selections, and volume control accessed viathe front panel of the KAV– 400xi are described in the illustrationlegend below. The front panel display shows volume and balancelevels, and Theate...
Page 12 - MODE INDICATORS
8 Krell KAV– 400xi Front Panel Description, continued 8 Mute Button or KeyUse this button to interrupt the signal of the input you have select-ed. To unmute, press the mute button again. 9 Mute LEDThe red mute LED illuminates when you press the mute button onthe front panel or the mute key on the re...
Page 13 - Remote Control Only; Place the remote face down on the table.
Remote Control Only See Figure 2 on page 6 Krell KAV– 400xi 9 The KAV– 400xi remote control uses one CR2025 lithium battery,which is included with the shipment. To open the battery compartment on the back of the remote control: 1. Place the remote face down on the table. 2. Use your thumbnail or a s...
Page 14 - The front panel display indicates:
Remote Control Functions, continued 10 Krell KAV– 400xi 13 Bal (Balance) KeysUse these keys to shift the balance to the left or the right channel.Balance level is indicated in the front panel display (11). To displaybalance, push any key on the remote. The front panel display indicates: - C - when t...
Page 15 - Figure 3 The KAV– 400xi Back Panel
Figure 3 The KAV– 400xi Back Panel 50/60 Hz 21 20 24 14 15 16 17 18 19 14 24 23 22 KAV– 400xiIntegrated Amplifier MADE IN USA FUSE AGC 8 LEFT OUTPUT IN IN RC–5 12VDC OUT OUTPUTS TAPE PREAMP LEFT TAPE S – 3 S – 2 S – 1 INPUTS B – 1 LEFT B – 1 RIGHT RIGHT OUTPUT RIGHT FUSE AGC 8 NO USER SERVICEABLE PA...
Page 16 - Back Panel Description; ANALOG INPUTS
Back Panel Description See Figure 3 on page 11 12 Krell KAV– 400xi The KAV– 400xi back panel provides connections for all inputs andoutputs, power on/off, and additional remote connections. 14 Left and Right Loudspeaker OutputsThe KAV– 400xi is equipped with standard binding posts for eachamplifier ...
Page 18 - Connecting the
14 Krell KAV– 400xi Krell recommends using balanced interconnect cables. Balancedinterconnect cables not only can minimize sonic loss but are alsoimmune to induced noise, especially with installations using longcables. Balanced connections have 6 dB more gain than single-ended connections. When leve...
Page 19 - Operating Your
Krell KAV– 400xi 15 This section provides information about operating the KAV– 400xi.The KAV– 400xi provides basic input selection and volume controloperation from the front panel. The remote control includes addi-tional preamplifier and volume functions as well as compact disctransport and amplifie...
Page 21 - Optional Configurations
Krell KAV– 400xi 17 To simplify the integration of an audio/video surround soundprocessor into your system, set any input on the KAV– 400xi (S-1,S-2, S-3, or B-1) to operate as a unity gain stage. Krell calls thisconfiguration Theater Throughput. When you configure a KAV– 400xi input for Theater Thr...
Page 23 - How to Troubleshoot System Noise
Krell KAV– 400xi 19 AC grounding becomes critical when connecting high performanceaudio components. When you mix and match audio components,each with its own ground potential, a low frequency hum mayoccur in one or both loudspeakers. This sometimes occurs whenintroducing a new component into a syste...
Page 24 - Questions and Answers
20 Krell KAV– 400xi Q. Should I leave my KAV– 400xi on at all times? A. Krell recommends leaving the amplifier in the stand-by mode,ready to play music. If you are not going to play music for along time, you may disconnect the amplifier from AC powersupply. Q. When I turn on the amplifier there is a...
Page 25 - Warranty
Krell KAV– 400xi 21 This Krell product has a limited warranty of five years for parts and labor on circuitry. Shouldthis product fail to perform at any time during the warranty, Krell will repair it at no cost tothe owner, except as set forth in this warranty. The warranty does not apply to damage c...
Page 26 - To contact the Krell Service Department:; TEL
22 Krell KAV– 400xi 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 expediteservice, you may wish to complete and e-mail the Serv...
Page 27 - Remote Control
FREQUENCY RESPONSE 20 Hz–20 kHz +0 dB, -0.07 dB SIGNAL-TO-NOISE RATIO “A” weighted 99 dB TOTAL HARMONIC DISTORTION (THD) 20 Hz–20 kHz 1 kHz <0.04% 20 kHz <0.25% GAIN 35.8 dB INPUT SENSITIVITY 0.644 Vrms INPUT IMPEDANCE 47 kOhms OUTPUT IMPEDANCE 0.17 Ohms POWER CONSUMPTION Idle 20 W Max. 1,800 ...
