Krell Industries KSP7B User Manual

KSP-7B STEREO PREAMPLIFIER OWNER’S MANUAL

45 Connair Road

Orange, CT 06477-0533, USA

INTRODUCTION & GENERAL INFORMATION

Thank you for purchasing the KRELL KSP-7B Preamplifier. The KSP-7B is
the latest evolution of KRELL’s entry level preamplifier technology. Many

of its design concepts are similar to our more expensive preamplifiers and

are wholly unique to KRELL. Two important design features are dual-

mono operation (all active stages are powered by independent tracking
regulators) and the complete absence of any capacitors in the signal path.

The KSP-7B retains other features for which KRELL preamplifiers have
become recognized: internally switchable loading for moving coil cartridges

and input capacity rarely found on high-end preamplifiers. All circuitry in
the KSP-7B is of completely new design -- many aspects of which are derived
from the top-of-the-line KRS-Balanced Reference Preamplifier. The most
significant of these is the fully balanced output stage. Balanced circuitry
has long been standard for professional audio equipment and is rapidly
becoming the standard for high-end audio equipment. The sonic benefits of
balanced operation are clearly audible. A simple listening comparison
between the RCA (single-ended) and the XLR (balanced) outputs will reveal
improvements in all areas of sonic quality. The connection of the KSP-7B in
single-ended and balanced systems is covered on page five.

Please read this manual thoroughly before using the KSP-7B. Installation
and operation are simple to understand and perform.

The KSP-7B will provide many years of trouble-free performance. Please be

sure to return the enclosed warranty registration card.

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ABOUT THE OWNERS~ MANUAL

The KSP-7B Owner’s Manual is divided into various groups of information.
The purpose of he document as a whole is to familiarize you with the unit
and guide you through its set-up, installation and operation in a logical
progression. The Table of Contents is as follows:

A. Unpacking
B. Phono Section Set-Up

C. Installation: 1. Cautions

2. Unit Location Guidelines and Installation

3. Connection of Inputs and Outputs

4. Turn-on of the Preamplifier
D. Operation
E. Warranty and Service Information

A. UNPACKING

Remove the KSP-7B, power supply and accessories from the shipping

container. Store all packing materials in a cool, dry place for future use.

Inspect the unit for shipping damage; if any damage is evident, contact
your dealer immediately. If the unit is in proper condition, proceed with
installation.

In addition to the preamplifier and power supply, you will find a small "L"

shaped allen driver. This is used to remove the top cover to gain access to

the phono section gain and input impedance loading adjustments.

Set-up of the phono section should be completed before installation of the

preamplifier.

B. PHONO SECTION SET-UP

Important Note: For the initial adjustment of the phono section the KSP-7B
should not be connected to its power supply. For adjustments to the phono

section input impedance after the initial set-up, as discussed below, please
note the following: Never adjust an_v of the.. internal switches while the
amplifier the KSP-7B is driving is turned on.