Krell Industries S-550i Setup Manual

Because of its powerful amplifier channels and high-capacity power supply, the
S-550i will benefit from a dedicated AC circuit. Avoid connections through exten-
AC POWER GUIDELINES
sion 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 for the S-550i.
Follow these steps to conect the S-550i to your system.
Connecting the
1. Make sure all power sources and components are off before connecting inputs
S-550i
and outputs.
to Your System
2. Neatly organize the wiring between the S-550i and all system components.
Separate AC wires from audio cables to prevent hum or other unwanted noises
Krell recommends using balanced from being introduced into the system.
interconnect cables. Balanced
3. Connect the left and right loudspeaker cables to the integrated amplifier's left
interconnect cables not only
and right loudspeaker output terminals (14).
can minimize sonic loss but are
4. Connect the left and right outputs of your source components to the appropri-
also immune to induced noise,
ate analog inputs (15, 16, 17) on the S-550i.
especially with installations using
long cables. Balanced connec- 5. Use the preamp outputs (19) to connect to an additional power amplifier.
tions have 6 dB more gain than
6. Plug the AC cord into the IEC connector (22) on the back panel of the S-550i.
single-ended connections. When
Plug the remaining end into the AC wall receptacle. Turn on the Power Breaker
level matching is critical, keep this
Switch on the rear panel. The red stand-by LED (2) illuminates and the display
gain value in mind.
shows the software version.
Note
Use only the power cord provided with the S-550i to make the connection to AC power.
Operation with a power cord other than the one supplied by Krell can induce noise, limit cur-
rent, or otherwise impair the ability of the integrated 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 LED (2) illumi-
Operating the S-550i
nated, turn the amplifier on by pressing the power button on the front panel
or the power key on the remote control (1). There are audible clicks. The blue
power LED (2) illuminates. The S-550i is now in the operational mode.
2. With the amplifier in the mute position, or the volume control fully attenu-
ated, select a source from the front panel or the remote control (4).
3. Start playing the source.
4. Set the volume to a comfortable listening level using the level knob on the
front panel or the level keys on the remote control (7).
5. To turn the amplifier off, press the power button on the front panel or the
power key on the remote control (1). The red stand-by LED (2) illuminates.
It is now safe to turn off the rest of the system.
Channel Balance The balance function allows adjustment of the left and right balance. The options
are:
CENTER, L 1-5 dB <, R 1-5 dB >
Adjustment
these adjustments. For front panel adjustment follow the steps listed below.
1. Press the S-550i's menu button (6), then use the level control knob, to select:
BALANCE.
2. Press the level control knob (8). The display shows (9) the default mode:
3. Use the level control knob to select the desired balance option from 1 to +5 dB
in 1 dB increments, left or right.
4. Press the level control knob (8) to confirm the selection. The display reads:
BALANCE.
5. Press the button to return to normal operation.
MENU
MODEL: S-550i Integrated Amplifier
4 Krell S-550i Krell Industries, LLC., 45 Connair Road,Orange, CT 06477-3650 USA
TEL 203-799-9954, FAX 203-891-2028, E-MAIL krell@krellonline.com
WEB SITE http://www.krellonline.com
. The remote control has direct (10) keys to make
CENTER.
SERIAL NUMBER:
contact@krellonline.com
THE LEADER IN AUDIO ENGINEERING
Getting Started Thank you for your purchase of the Krell S-550i Remote Control Integrated
Amplifier. This fully integrated amplifier and preamplifier has a discrete signal
path from input to output and employs a wide bandwidth design with low nega-
The owner's reference for this prod-
uct, including a detailed descrip- tive feedback for sonic accuracy throughout the frequency spectrum. All circuits
tion of features, technologies, and
up to the driver stage operate in pure Class A.
warranty is available on the web at:
www.krellonline.com
Krell's new surface mount technology (SMT) means that the S-550i is an inte-
grated amplifier with big power—275 Watts per channel—that does not require
big space. SMT allows individual circuit elements to be placed very close
Overview
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-550i is easy to operate and integrate into your system. The remote control
accesses all amplifier functions, and remote control connection options allow the
S-550i 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 integrated amplifier where it could be exposed to dripping or splashing.
WARNINGS
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.
This product complies with the
The ventilation slots on the top and bottom of the integrated amplifier must be unobstructed
EMC directive (89/336/EEC)
at all times during operation. Do not place flammable material on top of or beneath the com-
and the low-voltage directive
ponent.
(73/23/EEC).
Turn off all systems' power before connecting the integrated amplifier to any component.
This CLASS 1 apparatus must
Make sure all cable terminations are of the highest quality, free from frayed ends, short cir-
be connected to a MAINS
cuits, or cold solder joints.
socket outlet with a protective
earthing connection.
THERE ARE NO USER-SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.
Unpacking
1. Open the shipping box and remove the top layer of foam. You will see these
items:
Note
1 S-550i chassis
Save all packing materials. If
1 iPod dock
you need to ship the S-550i in
1 IEC connector (AC power) cord
the future, repack th unit in its
original packaging to prevent
shipping damage.
2. Carefully remove all items from the shipping box.
3. Place the preamplifier and power supply in a safe location and remove the pro-
tective plastic wrapping.
Placement
Place the S-550i on a firm, level surface, away from excessive heat, humidity, or
moisture. The integrated 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 ade-
quate ventilation. Installations inside cabinetry may need extra ventilation.
S-550i
Integrated Amplifier
QUICK SETUP GUIDE
1 Owner's Reference
1 Remote control
1 T-10 Torx wrench for remote
2 AAA remote batteries
Krell S-550i 1