Krell Industries KPE User manual

Reference KPE

Standard KPE

Phono Preamplifiers

Instructions for Use

Owner’s Reference

THE LEADER IN AUDIO ENGINEERING

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. All

other trademarks and tradenames are registered to their respective companies.

Reference KPE

Standard KPE

Phono Preamplifiers

v 02.1

Krell Industries, Inc.

45 Connair Road

Orange, CT 06477-3650 USA

TEL 203-799-9954

FAX 203-891-2028

E-MAIL [email protected]

WEBSITE http://www.krellonline.com

This product complies with the EMC directive (89/336/EEC) and the low-voltage

directive (73/23/EEC).

The preamplifier must be placed on a firm, level surface where it is not exposed to

dripping or splashing.

The ventilation grids on the top of the preamplifier and the space underneath the

preamplifier must be unobstructed at all times during operation. Do not place flam-

mable material above or beneath the preamplifier.

Before making connections to the preamplifier, ensure that the power is off and other

components are in mute or stand-by mode. 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 THE PREAMPLIFIER

Please contact your authorized Krell dealer, distributor, or Krell if you have any

questions not addressed in this manual.

CONTACT

INFORMATION

WARNINGS

Contents

Krell KPE iii

INTRODUCTION 1

DEFINITION OF TERMS 2

UNPACKING 3

PLACEMENT 4

AC Power Guidelines 4

CONNECTING THE KPE TO YOUR SYSTEM 5

OPERATING THE REFERENCE KPE 8

OPERATING THE STANDARD KPE 10

WARRANTY 12

RETURN AUTHORIZATION PROCEDURE 13

SPECIFICATIONS Back Cover

Page

iv Krell KPE

FIGURE 1 Reference KPE Phono Board 6

FIGURE 2 Standard KPE Phono Board 7

Illustrations

Page

Krell KPE 1

Thank you for your purchase of a Krell KPE external phono amplifier.

The Reference KPE and the Standard KPE are high performance

phono amplifiers designed to work with any moving coil cartridge.

This owner’s manual discusses the features and functions of the

KPE along with critical installation information.

In the unlikely event that your KPE should require service, you will be

pleased to know that it is backed by a comprehensive customer

satisfaction policy and one of the most advanced service facilities in

the industry. For detailed information on the terms and conditions of

service, please refer to the Warranty and Return Authorization

Procedure sections of this reference, the Warranty Registration Card,

or contact your authorized Krell dealer or distributor.

Introduction

2Krell KPE

Following are the definitions of key terms used in your owner’s refer-

ence 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 dB more gain than single-ended con-

nections and allow the use of long interconnect cables. Balanced

connections are immune to induced noise from the system or the

environment.

Single-ended

A two-wire input or output circuit. Use care when using single-ended

connections as the ground connection is made last and broken first.

Turn the system off prior to making or breaking single-ended connec-

tions. Single-ended connections are not recommended for connec-

tions requiring long cable runs.

Off

When the KPE is not connected to AC power and the blue LED on

the front panel is not illuminated, the component is off.

Operational Mode

The component is in the operational mode and is ready to play music

as soon as AC power is supplied to the KPE. The blue LED on the

front panel is illuminated when the component is in the operational

mode.

The Reference KPE and the Standard KPE need to be set for the loading

specification of your cartridge before they are operational. In addition, the

Standard KPE needs to be set for either moving magnet or moving coil car-

tridge operation. See Operating the Reference KPE on page 8, or

Operating the Standard KPE on page 10.

Definition of Terms

INPUT AND OUTPUT

CONNECTIONS

OPERATION

Note

Unpacking

Krell KPE 3

Open the box and remove the top layer of protective foam. The fol-

lowing items are visible:

1 Reference KPE phono amplifier

1 DC power connecting cable

1 T15 Torx wrench

1 warranty card

If ordered with the optional power supply the following items will also

be included:

1 Reference KPE power supply

1 AC power cord

Remove the plastic covering from the Reference KPE, DC power

cable and, if included, from the power supply.

Notes

REFERENCE KPE

Open the box and remove the top layer of protective foam. The fol-

lowing items are visible:

1 KPE phono amplifier

1 DC power connecting cable

1 T15 Torx wrench

1 warranty card

If ordered with the optional power supply the following items will also

be included:

1 KPE power supply

1 AC power cord

Remove the plastic covering from the Standard KPE, DC power

cable and, if included, from the power supply.

If any of these items are not included in the box, please contact your autho-

rized dealer or distributor immediately for assistance.

Save all packing materials. If you ship your KPE in the future, repack the

unit in its original packaging to prevent shipping damage.

STANDARD KPE

4Krell KPE

Place the KPE on a firm level surface away from excessive dirt or

moisture.

The KPE is sensitive to induced hum from power supplies or motors.

It should be located at least one foot away from other components

such as turntables, tape recorders, and power supplies. The KPE is

supplied with an extra long DC power cable. This enables the user to

employ short interconnect cables from the turntable to the KPE and a

longer run of interconnect cables from the KPE to the preamplifier.

Placement

The KPE 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 accept-

able. High quality AC line conditioners or filters can be used if they

are grounded and meet or exceed the unit’s power supply rating of

100 VA.

AC POWER

GUIDELINES

Krell KPE 5

The KPE can obtain power from the DC output of the Krell KBL, the

Krell KRC–2, the Krell KCT, or from the optional power supply.

1. Unplug the KBL, KRC–2, or KCT from the AC wall socket.

2. Connect the supplied DC power cable to the DC output

receptacle on the KBL, KRC–2, or KCT.

3. Connect the other end of the DC cable to the DC input on

the KPE.

Do not plug the power supply into the AC wall socket until completing

steps 1-5 below.

1. Connect the supplied DC power cable to the DC output.

2. Connect the other one of the DC power cable to the DC input

receptacle on the KPE.

3. Connect the output of your turntable to the input of the KPE.

4. Connect the output of the KPE to a line level input on your pre-

amplifier.

5. Plug the KBL, KRC–2, or KCT to the external KPE power supply

into the AC wall socket. The blue LED on the KPE will now be illu-

minated.

Allow the Reference KPE to warm up for one minute after the initial turn on,

before selecting the phono input on your preamplifier.

All audio connections on the Reference KPE and the Standard KPE are sin-

gle-ended, via RCA connectors.

Connecting the KPE to your System

INSTALLATION WITH

THE KBL, KRC–2,

or KCT

INSTALLATION WITH

OPTIONAL EXTERNAL

POWER SUPPLY

Notes

IMPORTANT

1 Mounting Hole

2 Loading Switch

3 Gain Switch Bank

Figure 1 Reference KPE Phono Board

6Krell KPE

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