Krell Industries Stereo Amplifier 309323 User Manual

Evolution 222  
Stereo Preamplifier  
THE LEADER IN AUDIO ENGINEERING  
QUICK SETUP GUIDE  
Thank you for your purchase of the Krell Evolution 222 Stereo Preamplifier. The Evo-  
lution 222 features Krell Current Mode circuit topologies, Krell CAST technology,  
and a robust power supply for exceptional audio performance. A thoughtful suite  
of menu options ensures that the Evolution 222 can be customized for the greatest  
ease of operation.  
Getting Started  
The owner’s reference for this  
product, including a detailed  
description of features, technolo-  
gies, and warranty is available on  
Please contact your authorized dealer, distributor, or Krell if you have any questions  
not addressed in the owner’s reference.  
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, AC power, and other system components.  
Overview  
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.  
WARNINGS  
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:  
Unpacking  
Note  
1 Preamplifier chassis  
1 IEC connector (AC power) cord  
1 Remote control  
2 AAA remote batteries  
1 T-10 Torx wrench for remote  
1 Quick Setup Guide  
Save all packing materials. If you  
need to ship the Evolution 222  
in the future, repack the unit in  
its original packaging to prevent  
shipping damage.  
2. Carefully remove all items from the shipping box.  
3. Place the preamplifier in a safe location and remove the protective plastic wrap-  
ping.  
We recommend that you place the preamplifier on a firm, level surface, away from  
excessive heat, humidity, or moisture. 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 venti-  
lation.  
Placement  
The Evolution 222 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 222.  
AC POWER GUIDELINES  
This product complies with the EMC directive (89/336/EEC)  
and the low-voltage directive (73/23/EEC).  
Krell Evolution 222  
1
 
Figure 3 The Evolution 222 Back Panel  
tors (for use with Krell  
CAST-equipped ampli-  
fiers).  
nents to be turned  
on/off, or to/from stand-  
by, through the remote  
control.  
17 Tape input  
23 RC-5 in  
This remote connector  
Back Panel  
Functions  
This single-ended input  
pair is for use with a  
tape source.  
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 configuration:  
Tip = RC-5 data  
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.  
For more information,  
see Input Trigger in the  
owner’s reference.  
18 C-1 and C-2 inputs  
The two CAST inputs  
have 4-pin bayonet  
connectors, for use with  
Krell CAST-equipped  
input devices.  
25 Phono power port  
This is for connecting  
the preamplifier to a  
Krell KPE phono stage.  
See the KPE owner’s  
reference for more  
details.  
15 Balanced inputs: B-1  
and B-2  
These XLR balanced  
analog source input  
connectors are wired  
as follows:  
19 Tape output  
Ring = +5 V  
Sleeve = GND.  
This single-ended out-  
put pair is used for  
recording the selected  
input source.  
22 RS-232 port  
24 12 VDC in/out  
This port receives mes-  
sages from a computer-  
based control system,  
providing integrated  
control of all preamplifier  
functions. For details,  
see the developer's ref-  
erence: RS-232 Port:  
Sending Commands  
and Interpreting Data.  
(12 V trigger)  
Pin 1 Ground  
Pin 2 Non-inverting  
Pin 3 Inverting  
26 IEC power cord  
receptacle  
There are 2 outputs and  
one input that send and  
receive 12 VDC power  
on/off (trigger) signals to  
and from other Krell  
components, and other  
devices that incorporate  
a 12 V trigger. This  
20 Main outputs  
This is for use with the  
provided AC power  
cord. Plug the other end  
into an AC Mains supply  
capable of supplying  
the correct AC voltage  
and current for the  
power supply.  
The Evolution 222 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-  
16 Single-ended inputs:  
S-1, S-2, and S-3  
There are 3 single-  
ended analog source  
inputs with RCA con-  
nector pairs.  
allows other compo-  
The menu button or key (5)  
allows you to configure  
functions. Enter the menu  
to view the list of config-  
urable functions.  
or key. Once you are in  
the menu, you can  
press the menu button  
or key to exit the menu.  
BACK  
Configurable  
Functions  
Customizing the  
Evolution 222  
Select back to scroll  
backwards through the  
menu hierarchy, or to  
exit a menu option with-  
out confirming that  
option.  
AC Mains  
Balance (channel)  
Balance (input trim)  
Display, Info  
Input Level Trim  
Input Name  
Input Phrase  
Input Trigger  
IR Out Control  
Link Control  
Mute, Output Trigger  
RC-5 Control, Recall  
RS-232 Control, Save  
Theater Mode  
Volume Display  
14 Level Control Knob  
or Up and Down Keys  
Use the level control  
knob or the up and  
Select a configurable func-  
tion to view a submenu of  
the list of options that con-  
figure the function. You can  
configure some options as  
well, if a second submenu  
appears when you select  
an option.  
For more information on  
menu configuration, review  
the Owner’s Reference on  
the Krell website at  
Navigate to Downloads/  
Current, then select the  
Evolution 222 from the  
product list. The publication  
list for the Evolution 222  
appears.  
down keys on the re-  
mote control to scroll  
forward and backward  
through the menu hier-  
archy. Each menu list is  
a continuous loop.  
Navigation  
Conventions  
Navigating the preamplifier  
menu is straightforward and  
consistent throughout, using  
4 functions and the menu  
option BACK.  
6
3
Enter Button or Key  
Press this button or key  
to select a function or a  
configuration option,  
and confirm a selection.  
Front Panel Display  
The display shows the  
active function and con-  
figurable options.  
5
Menu Button or Key  
To enter the menu,  
press the menu button  
Krell Evolution 222  
3
 
Position the preamplifier where you intend to use it in your system.  
Connecting the  
Evolution 222  
to Your System  
1. 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.  
Krell recommends using its  
proprietary Krell CAST system  
for unparalleled sonic per-  
formance 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 222 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. Connect the outputs of your source equipment to the appropriate CAST (18),  
balanced (15), single-ended (16), or tape inputs (17) on the Evolution 222.  
3. Connect the main outputs (20) on the Evolution 222 to your amplifier’s inputs.  
4. Connect the supplied AC power cord to the IEC power cord receptacle (26)  
of the preamplifier.  
5. Plug the other end of the AC power cord into AC power. The display (3) scrolls  
through EVOLUTION 222 SOFTWARE VERSION, and the stand-by/power LED (7) illumi-  
nates red, indicating that the Evolution 222 is in stand-by mode. When the  
scrolling stops, the Evolution 222 is ready to be powered on.  
Note  
Use only the power cord provided with the Evolution 222 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 222 is connected to your system and to AC power, and the front  
panel display has stopped scrolling, begin operation:  
Operating the  
Evolution 222  
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 222 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 222 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 >.  
Channel Balance  
Adjustment  
1. Press the preamplifier menu button (5), then use the level control knob, or the  
remote control 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.  
5. Press the menu button to exit the menu.  
Evolution 222 Preamplifier  
MODEL  
SERIAL NUMBER  
P/N 309323  
v 07.0  
4
Krell Evolution 222  
Krell Industries, Inc., 45 Connair Road,Orange, CT 06477-3650 USA  
TEL 203-298-4000, FAX 203-891-2028, E-MAIL [email protected]  
 

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