Krell Industries S-300i User manual

S–300i

Remote Control

Integrated Amplifier

Instructions for Use

Owner’s Reference

K r e l l ®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.

Krell Industries, Inc.

45 Connair Road

Orange, CT 06477-3650 USA

T E L 2 0 3 - 7 9 9 - 9 9 5 4

FAX 203-891-2028

E - M A I L k r e l l @ k r e l l o n l i n e . c o m

WEBSITE http://www. k r e l l o n l i n e . c o m

Do not place the integrated amplifier where it could be exposed to dripping or

s p l a s h i n g .

The ventilation grids on the top and bottom of the S-300i must be unobstructed 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 S-300i 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 PA R TS INSIDE A N Y K R E L L P R O D U C T.

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

tions not addressed in this reference manual.

S - 3 0 0 i

Remote Control Integrated Amplifier

Instructions for Use

v 1.0

C O N TACT

I N F O R M AT I O N

WA R N I N G S

Krell S-300i i i i

C o n t e n t s

P a g e

I N T R O D U C T I O N 1

DEFINITION OF T E R M S 2

U N PACKING 4

P L A C E M E N T 5

AC Power Guidelines 5

Power Cord 5

F R O N T PA N E L / REMOTE CONTROL D E S C R I P T I O N 7

REMOTE CONTROL O N LY 9

Battery Installation and Removal 9

Remote Control Only Functions 9

BACK PA N E L D E S C R I P T I O N 1 2

CONNECTING THE S - 3 0 0 i TO YOUR SYSTEM 1 4

Connection Steps 1 4

O P E R ATING YOUR S - 3 0 0 i 1 5

Amplifier Operation 1 5

O P T I O N A L C O N F I G U R AT I O N S 1 7

Configuring the S - 3 0 0 i 1 7

Balance 1 8

Input Balance Trim 1 8

Input Level Trim 1 9

Theater Mode 1 9

Display 2 0

Mute 2 1

Input Trigger 2 1

Output Trigger 2 2

AC Mains 2 3

Input Name 2 4

Info 2 4

HOW TO T R O U B L E S H O O T SYSTEM NOISE 2 6

QUESTIONS AND A N S W E R S 2 7

WA R R A N T Y 2 8

RETURN A U T H O R I Z ATION PROCEDURE 2 9

S P E C I F I C AT I O N S 3 0

i v Krell S-300i

I l l u s t r a t i o n s

FIGURE 1 The S-300i Front Panel 6

FIGURE 2 The S - 3 0 0 i Remote Control 6

FIGURE 3 The S - 3 0 0 i Back Panel 11

P a g e

Krell S-300i 1

I n t ro d u c t i o n

Thank you for your purchase of the Krell S-300i Remote Control

Integrated A m p l i f i e r. This fully integrated amplifier and preamplifier

has a discrete 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 balanced and pure Class A.

K r e l l ’ s new surface mount technology (SMT) means that the S-

300i is an integrated amplifier with big power—150 Watts per

channel—that does not require big space. SMT allows individual

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 S-300i is easy to operate and integrate into your system. T h e

remote control accesses all amplifier functions, and remote control

connection options allow the S-300i to be easily connected with

other components. The Theater Throughput feature provides easy

integration of the amplifier into a home theater

s y s t e m .

This owner’s reference manual contains important information on

the placement, installation, and operation of the S-300i. Please

read this information carefully. A thorough understanding of these

details will help ensure satisfactory operation and long life for your

S-300i and related system components.

Definition of Te r m s

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

erence manual.

Theater Throughput

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 vol-

ume 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 instal-

lations, balanced connections have 6 dB more gain than single-

ended connections and allow the use of long interconnect cables.

Balanced connections are completely immune to induced noise

from the system or the environment.

S i n g l e - e n d e d

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 connections. Single-ended connections are not recom-

mended for connections requiring long cable runs.

i P o d

A direct balanced input carried via a special termination utilizing a

30-pin connector. This connection is designed specifically for iPods

and allows charging and control functions in addition to music

p l a y b a c k .

C O N F I G U R AT I O N S

INPUT AND OUTPUT

C O N N E C T I O N S

2 Krell S-300i

Definition of Te r m s , c o n t i n u e d

O f f

The component is off when the rear panel button is not depressed.

Stand-by Mode

A low power consumption status that keeps the audio circuits at

idle. When you press the rear panel power button, 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.

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 wide bandwidth capabilities.

T E C H N O L O G Y

Krell S-300i 3

O P E R AT I O N

4 Krell S-300i

U n p a c k i n g

Follow these steps to safely unpack the S-300i:

1 . Open the shipping box and remove the top layer of foam. T h e

S-300i and the S-300i accessory kit containing the following

items are visible:

1 AC power cord

1 S-300i remote control

1 30-Pin iPod connection cable

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

Krell dealer.

Save all packing materials. If you must ship your S-300i in the future,

repack the unit in its original packaging to prevent shipping damage.

N o t e s

Krell S-300i 5

P l a c e m e n t

Before you install the S-300i into your system, review the following

guidelines to choose the location for the S-300i. This will facilitate

a clean, trouble-free installation. The S-300i does not require any

type of special rack or cabinet for installation. For the dimensions

of the S-300i, see S p e c i f i c a t i o n s, on the back cover.

Place the S-300i on a firm, level surface, away from excessive

heat, humidity, or moisture. The S-300i requires at least 1 inch

(2.54 cm) of clearance on each side and at least two inches (5 cm)

of clearance above the component to provide adequate ventilation.

Installations inside cabinetry may need extra ventilation.

The S-300i is not hum-sensitive. Other components may be

placed on or around the S-300i (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 S-300i has superb regulation and does not require a dedicat-

ed AC circuit. Avoid connections through extension cords or multi-

ple 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 Wa t t s .

The S-300i should be operated with the power cord

supplied and connected directly to the AC power outlet. Please

contact your authorized Krell dealer, distributor, or Krell before

using any devices designed to alter or stabilize the AC power for

the S-300i.

AC Power

G u i d e l i n e s

Power Cord

F i g u re 1 The S-300i Front Panel

F i g u re 2 The S-300i Remote Contro l

N o t e Some remote control keys listed above function with other current Krell

components. Consult the Krell reference manual for each model to review

your component’s full remote control capabilities.

6 Krell S-300i

P o w e r

1 Power BUTTON

2 Power LED

3 Infrared Sensor

Input Devices

5 S-1, S-2, S-3, B-1 and

iPod Buttons or Keys

7 Volume Level Knob or

Level / Navigation Keys

Mode Control

6 MENU Button or Key

8 ENTER Button or Key

9 Display Wi n d o w

1 2 Direct iPod control keys

Volume Adjustment

F u n c t i o n s

1 0 Bal (Balance) Keys

( R e m o t e )

Buttons for other KRELL p r o d -

u c t s

11 Amp option select

1 3 CD/ DVD transport control

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