Krell Industries Evolution 202 User manual

Note
Save all packing materials. If you
need to ship the Evolution 202
in the future, repack the unit in
its original packaging to prevent
shipping damage.
Evolution 202
Stereo Preamplifier
QUICK SETUP GUIDE
Getting Started Thank you for your purchase of the Krell Evolution 202 preamplifier. The Evolution 202
features Krell Current Mode circuit topologies, Krell CAST technology, and a power-
ful, separate power supply for exceptional audio performance. A thoughtful suite of
menu options ensures that the Evolution 202 can be customized for the greatest
ease of operation.
Please contact your authorized dealer, distributor, or Krell if you have any questions
not addressed in the owner’s reference.
The Evolution 202 is comprised of two chassis: the preamplifier chassis and the
power supply chassis.
The preamplifier’s front panel provides power on, input and zone selection, level
control, menu functions, and status display. The rear panel allows connection to
audio sources, power amplifiers and other system components.
The power supply unit contains a powerful transformer, high quality regulators, and
extensive electrical and magnetic shielding, supplying optimum regulated DC power
to the preamplifier.
The remote control provides power, preamplifier, level control, navigation and
customization functions, CD and DVD player controls and menu configuration.
Do not place the preamplifier 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 fre-
quency interference (RFI) to be introduced into your playback system.
The ventilation grids on the top and bottom of the preamplifier 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 preamplifier 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 preamplifier and power supply in a safe location and remove the pro-
tective plastic wrapping.
We recommend that you place the preamplifier on top of the power supply unit.
Place them on a firm, level surface, away from excessive heat, humidity, or mois-
ture. The preamplifier requires at least two inches (5 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 Evolution 202 1
Unpacking
Krell Industries, Inc., 45 Connair Road,Orange, CT 06477-3650 USA
TEL [phone], FAX [phone], E-MAIL kr[email protected]
WEB SITE http://www.krellonline.com
Connecting the
Evolution 202
to Your System
The Evolution 202 preamplifier has superb regulation and does not require a dedi-
cated AC circuit. Avoid connections through extension cords or multiple AC
adapters. High quality 15 amp AC strips are acceptable. The use of AC line condi-
tioning devices is not recommended. The features provided by these devices are
already on board the Evolution 202.
Position the preamplifier and power supply where you intend to use them in your
system. Do not move the chassis after they are connected.
1. Connect the power supply chassis and the preamplifier chassis with the 12-pin
DC cable provided, using the back panel DC power connectors (24).
2. Neatly arrange and organize wiring to and from the preamplifier and all compo-
nents. Separate the AC wires from any audio cables to prevent hum or other
unwanted noise from being introduced into the system.
3. Connect the outputs of your source equipment to the appropriate CAST (18),
balanced (15), single-ended (16), or tape inputs (17) on the Evolution 202.
4. Connect the main outputs (20) on the Evolution 202 to your amplifier’s inputs.
5. Connect the supplied AC power cord to the IEC power cord receptacle (27) of
the power supply unit.
6. Plug the other end of the AC power cord into AC power. The display (3) scrolls
through EVOLUTION 202 SOFTWARE VERSION, and the stand-by/power LEDs (7) illu-
minate red, indicating that the Evolution 202 is in stand-by mode. When the
scrolling stops, the Evolution 202 is ready to be powered on.
Note
Use only the power cord provided with the Evolution 202 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 preamplifier to perform optimally.
After the Evolution 202 is connected to your system and to AC power, and the front
panel display has stopped scrolling, begin operation:
1. Press the power button (1) on the front panel, or the remote control power key.
The standby/power LED turns blue. The display shows the factory default input:
S-1, and level: -inf. The Evolution 202 is now in the operational mode.
2. With the preamplifier output muted, or the volume fully attenuated, select a
source manually using the front panel input select buttons (8, 9, or 10) or the
remote input select keys. Start playing the source. Use the level control knob
(14) or the remote level keys to set the volume to a comfortable level.
3. To return the preamplifier to the stand-by mode, press the power button (1) or
remote power key. (We recommend leaving the Evolution 202 in the stand-by
mode when it is not playing music.)
The balance function allows adjustment of the left and right balance. The options
are: CENTER, L .5-5 dB <, R .5-5 dB >.
1. Press the preamplifier’s menu button (5), then use the level control knob, or the
remote control’s up and down keys to select: BALANCE.
2. Press the enter button (6) or remote enter key. The display shows the default
mode: CENTER.
3. Use the level control knob, or the up and down keys, to select the desired bal-
ance option from 0 to +5 dB in .5 dB increments, left or right.
4. Press the enter button or key to confirm the selection. The display reads:
BALANCE.
4 Krell Evolution 202
Operating the
Evolution 202
This product complies with the EMC directive (89/336/EEC)
and the low-voltage directive (73/23/EEC).
1 Preamplifier chassis
1 Power supply chassis
1 IEC connector (AC power) cord
1 12-pin DC supply cable
1 Remote control
2 AAA remote batteries
1 T-10 Torx wrench for remote
1 Owner’s reference
Placement
AC POWER GUIDELINES
MODEL SERIAL NUMBER
Evolution 202 Preamplifier
P/N 309157
v 06.0
Overview
The owner’s reference for this
product, including a detailed
description of features, technolo-
gies, and warranty is available on
the web at: www.krellonline.com
Channel Balance
Adjustment
Krell recommends using its
proprietary Krell CAST system
for unparalleled sonic perfor-
mance for connections
between the preamplifier and
other CAST-equipped compo-
nents. Krell CAST uses flexible
interconnecting cables that
can be drawn through tight
spaces and concealed.
The Evolution 202 also offers
balanced operation. This not
only minimizes sonic loss but
is also immune to induced
noise, especially for installa-
tions using long cables.

2 Krell Evolution 202 Krell Evolution 202 3
Figure 1 The Evolution 202 Front Panel
Figure 2 The
Remote Control
Figure 3 The Evolution 202 Back Panel
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. Krell Current Mode™ is a trademark of Krell Industries, Inc. All other
trademarks and trade names are registered to their respective companies.
© 2006 by Krell Industries, Inc., All rights reserved
Front Panel Back Panel
1 Power
Use this to switch the
preamplifier between
stand-by and opera-
tional modes.
2 Infrared emitter
This transmits infrared
commands to a pro-
grammable remote con-
trol, such as the univer-
sal Krell Touch Screen
Remote.
3 Display
This provides channel
status messages, in-
cluding input selection,
volume level, balance
offset, and menu selec-
tions.
4 Infrared sensor
This receives com-
mands from the remote
control. Make sure this
is not obstructed.
5 Menu button
Use this to access the
menu functions of the
Evolution 202. For
more information, see
Customizing the
Evolution 202, in the
owner’s reference.
6 Enter button
Use this to configure
the menu functions of
the Evolution 202. See
Menu (5).
7 Stand-by/Power LED
These preamplifier and
power supply LEDs illu-
minate red (stand-by)
when the Evolution 202
is plugged into a stan-
dard AC wall recepta-
cle. They illuminate blue
(operational mode)
when the power button
(1) is pressed while the
Evolution 202 is in
stand-by mode.
8, 9, and 10 Input
selectors
Use these to select the
corresponding rear
panel input that is con-
nected to a single-
ended (S-1, S-2, S-3),
balanced (B-1, B-2), or
CAST (C-1, C-2) analog
source. The display (3)
shows the selected
input and volume level.
11 Tape input selector
Use this to select the
tape input that is con-
nected to an analog
tape source. The red
LED illuminates when
the tape input is select-
ed. The display (3)
shows: TAPE and the
main volume level.
12 Mute button
Use this to mute the
preamplifier output. To
unmute, press the mute
button again. The red
LED illuminates when
mute is selected.
13 Phase button
Use this to invert the
absolute polarity of the
main output. The red
LED illuminates when
phase is selected.
14 Level control knob
Use this knob to
increase or decrease
system volume level or,
with the remote con-
trol’s balance keys, to
adjust the balance. The
level control knob or
keys also select menu
options that customize
the Evolution 202.
15 Balanced inputs: B-1
and B-2
These XLR balanced
analog source input
connectors are wired as
follows:
Pin 1 Ground
Pin 2 Non-inverting
Pin 3 Inverting
16 Single-ended inputs:
S-1, S-2, and S-3
There are 3 single-
ended analog source
inputs with RCA con-
nector pairs.
17 Tape input
This single-ended input
pair is for use with a
tape source.
18 C-1 and C-2 inputs
The two CAST inputs
have 4-pin bayonet
connectors, for use with
Krell CAST-equipped
input devices.
19 Tape output
This single-ended out-
put pair is used for
recording the selected
input source.
20 Main outputs
The Evolution 202 is
equipped with one bal-
anced XLR output pair,
one single-ended RCA
output pair, and two
CAST output pairs with
4-pin bayonet connec-
tors (for use with Krell
CAST-equipped ampli-
fiers).
21 CAN link
These RJ-45 link con-
nectors are connected
in parallel. They are
used to operate pream-
plifier channels in linked
mode. See CAN Link,
in the owner’s reference,
for more details.
22 RS-232 port
This port receives mes-
sages from a computer-
based control system,
providing integrated
control of all preamplifi-
er functions. For details,
see the developer's ref-
erence: RS-232 Port:
Sending Commands
and Interpreting Data.
23 RC-5 in
This remote connector
is used with third-party
remote control systems
that provide RC-5 (IR)
data via a wired con-
nection. A stereo tip,
ring, sleeve 1/8” mini
connector is used in
the following configura-
tion:
Tip = RC-5 data
Ring = +5 V
Sleeve = GND.
24 DC power connector
Use the supplied 12-pin
cable to connect this to
the corresponding DC
power connector on the
power supply. Make sure
the AC power cord is
unplugged before making
any connections to the
preamplifier.
25 12 VDC in/out
(12 V trigger)
There are 2 outputs and
one input that send and
receive 12 VDC power
on/off (trigger) signals to
and from other Krell com-
ponents, and other devices
that incorporate a 12 V
trigger. This allows other
components to be turned
on/off, or to/from stand-by,
through the remote control.
For more information, see
Input Trigger in the
owner’s reference.
Keys labeled 1 to 14
have the same function
(and callout number) as
the front panel controls.
Keys labeled A through J
are unique to the re-
mote control, and are
described below:
A Amp Pwr key
Use this to activate
Krell amplifiers con-
nected to your system.
B Amp Sel key
Use this to select the
meter range of the
power meter scale on
the front of a Krell
Evolution One amplifier.
C Bal(ance) keys
Use along with the level
keys, to balance left
and right output levels.
D Transport keys
These keys are func-
tional with all Krell CD
and DVD players.
E Menu key
Use this to enter CD or
DVD player menus.
F Direction keys
Use these keys to navi-
gate CD and DVD
menus.
G Select key
Use this to make selec-
tions from CD and DVD
menus.
H CD key
Press this to make the
transport keys operate
Krell CD players.
I DVD key
Press this to make the
transport keys operate
DVD players.
J Title key
Use this with CD or
DVD player menus.
Note
The remote comes with
two AAA batteries that
have to be installed.
Use the supplied Torx
wrench to remove the
battery panel, then
install the batteries.
26 Fuses
Always unplug the
power cord before
inspecting these fuses.
Always replace the
fuses with the exact
style and rating.
Power Supply
Remote
Control
Figure 4 The Evolution 202 Power Supply
27 IEC power cord
receptacle
This is for use with the
provided AC power
cord. Plug the other
end into an AC Mains
supply capable of sup-
plying the correct AC
voltage and current for
the power supply.
28 Phono power port
This is for connecting
the preamplifier to a
Krell KPE phono stage.
See the KPE owner’s
reference for more
details.
24 DC power connector
Use the supplied 12-pin
cable to connect this to
the corresponding DC
power connector on the
preamplifier. Make sure
the AC power cord is
unplugged before making
any connections to the
preamplifier.