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iBias Power Amplifier

Duo 175 and Duo 300 Stereo Amplifiers

Solo 375 and Solo 575 Mono Amplifiers

Trio 300 Three Channel Amplifier

Chorus 5200 and Chorus 7200 Multi Channel Amplifiers

SETUP GUIDE

Getting Started

THE LEADER IN AUDIO ENGINEERING

Krell’s history is rich with breakthrough Class A amplifiers that have helped build

the Krell legacy of offering the best sounding amplifiers available. Audiophiles have

always considered Class A technology to be the best sounding operating state for

amplifiers. However, despite Class A’s unrivaled sound quality, it has fallen out

of fashion because of recent demands to reduce power consumption and heat in

home electronics products. Krell engineering took this challenge and redefined the

meaning of high performance power amplifier. Our goal – unmatched performance,

elegant design, and a compelling array of features. The breakthrough, iBias, a

patent pending circuit delivering Class A operation without the excessive heat

and wasted energy of conventional designs, housed in a striking new form factor,

with network connectivity for advanced access and monitoring. The sound is open

and unconstrained, in a manner that rivals live performance and the true sound of

voices and instruments. Music and dialogue are reproduced with a richness, detail,

and startling dynamics that fill a room.The iBias amplifier is easy to operate and

integrate into your system. The remote control accesses all amplifier functions, and

remote control connection options allow the iBias amplifier to be easily connected

with other components. The Theater Throughput feature provides easy integration of

the amplifier into a home theater system.

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

Do not remove or bypass the ground pin on the end of the AC cord. This may cause radio

frequency interference (RFI) to be introduced into your playback system.

The ventilation slots on the top and bottom of the amplifier as well as the fan openings on the

back must be unobstructed at all times during operation. Do not place flammable material on top

of or beneath the component.

Turn off all systems’ power before connecting the amplifier to any 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.

1. Open the shipping box and remove the top layer of foam. You will see these items:

2. Carefully remove all items from the shipping box.

3. Place the amplifier in a safe location and remove the protective plastic wrapping.

Place the iBias amplifier on a firm, level surface, away from excessive heat, humidity,

or moisture. The amplifier requires at least one inch (2.54 cm) of clearance on each

side and at least two inches (5 cm) of clearance above to provide adequate ventilation.

Installations inside cabinetry may need extra ventilation.

WARNINGS

Krell iBias Amplifier 1

Unpacking

Krell Industries, LLC., 45 Connair Road, Orange, CT 06477-3650 USA

TEL 203-799-9954, FAX 203-891-2028, E-MAIL [email protected]

WEB SITE www.krellonline.com

Connecting the

iBias Amplifier

to Your System

Because of its powerful amplifier channels and high-capacity power supply, iBias

amplifiers will benefit from a dedicated AC circuit. Avoid connections through extension

cords or multiple AC adapters. High quality 20 amp AC strips are acceptable. Please

contact your authorized Krell dealer, distributor befor using any devices designed to alter

or stabilize the AC power.

Follow these steps to connect an iBias amplifier to your system.

1. Make sure all power sources and components are off before connecting inputs and

outputs.

2. Neatly organize the wiring between the iBias amplifier and all system components.

Separate AC wires from audio cables to prevent hum or other unwanted noises from

being introduced into the system.

3. Connect the left and right loudspeaker cables to the amplifier's left and right

loudspeaker output terminals (14).

4. Connect the left and right outputs of your preamplifier or processor to the appropriate

analog inputs (15, 16, 17) on the iBias amplifier.

5. Plug the AC cord into the IEC connector (22) on the back panel of the iBias amplifier.

Plug the remaining end into the AC wall receptacle. Move the Power Breaker Switch

on the rear panel to the up position. The red stand-by indicator (2) illuminates and the

display shows the model number, firmware version, serial number, and IP address.

Note

Use only the power cord provided with the iBias amplifier to make the connection to AC power.

Operation with a power cord other than the one supplied by Krell can induce noise, limit current, or

otherwise impair the ability of the iBias amplifier to perform optimally.

When powering up any system, alway turn amplifiers on last.

When powering down, always turn amplifiers off first.

1. When the amplifier is in stand-by mode, with the red stand-by indicator (2)

illuminated, turn the amplifier on by pressing the power button on the front panel

(1). There are audible clicks. The blue power indicator (2) illuminates. The display

will show the IP Address and model number and then turn off. The iBias amplifier

is now in the operational mode.

2. With the preamplifier or processor in the mute position, or the volume control fully

attenuated, select a source.

3. Start playing the source.

4. Set the volume to a comfortable listening level using the preamplifier or processor

volume control.

5. To turn the amplifier off, press the power button on the front panel (1). The red

stand-by indicator (2) illuminates.

It is now safe to turn off the rest of the system.

4 Krell iBias Amplifier

Operating the

iBias Amplifier

This product complies with the

EMC directive (89/336/EEC)

and the low-voltage directive

(73/23/EEC).

1 iBias amplifier chassis

1 IEC connector (AC power) cord

1 12V Trigger cable

Placement

AC POWER GUIDELINES

MODEL: iBias Power Amplifier SERIAL NUMBER:

Overview

This CLASS 1 apparatus must

be connected to a MAINS

socket outlet with a protective

earthing connection.

Krell recommends using balanced

interconnect cables. Balanced

interconnect cables not only

can minimize sonic loss but are

also immune to induced noise,

especially with installations using

long cables. Balanced connections

have 6 dB more gain than single-

ended connections. When level

matching is critical, keep this gain

value in mind. For the Solo 375

or Solo 575, Krell recommends

the use of CAST. A Krell exclusive

technology, a Krell system

connected with Krell CAST MMF

cable is the fullest expression of

Krell engineering.

Note

Save all packing materials.

If you need to ship the iBias

amplier in the future, repack

th unit in its original packaging

to prevent shipping damage.

1 2

Indice de contenidos

Pagina 1 - SETUP GUIDE

iBias Power AmplifierDuo 175 and Duo 300 Stereo AmplifiersSolo 375 and Solo 575 Mono AmplifiersTrio 300 Three Channel AmplifierChorus 5200 and Chorus

Pagina 2 - Network

1322 Krell iBias Amplifier Krell iBias Amplifier 3Figure 1 The iBias Front PanelFigure 2 Network Control Screen - Duo 300 Shown142117 15 1

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Krell 7200 Chorus Manual de usuario

Busca en linea o descarga Manual de usuario para Receptores y amplificadores Krell 7200 Chorus. Krell 7200 Chorus User Manual Manual de usuario

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