Krell Industries, Inc.
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
This product complies with the EMC directive (89/336/EEC) and the low-voltage
directive (73/23/EEC).
The Full Power Balanced amplifier must be placed on a firm, level surface where it
is not exposed to dripping or splashing.
The ventilation grids on the top of the Full Power Balanced amplifier must be unob-
structed at all times during operation. Do not place flammable material on top of or
beneath the component.
Before making connections to the Full Power Balanced amplifier, ensure that it is
off and the preamplifier is in mute or stand-by mode. Make sure all cable termina-
tions are of the highest quality and free from frayed ends, short circuits, or cold
solder joints.
The differential circuitry employed with Full Power Balanced amplifiers requires special
attention when connecting speakers. Do not connect the negative speaker terminals
together. Do not connect the negative speaker terminals to ground or attempt to bridge
the left and right speaker binding posts of Full Power Balanced stereo amplifiers.
Do not connect a Full Power Balanced amplifier to a speaker selector device that
employs a common ground scheme, as it may short-circuit the amplifier output.
THERE ARE NO USER SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.
Please contact your authorized Krell dealer, distributor, or Krell if you have any ques-
tions not addressed in this reference manual.
© 2003 by Krell Industries, Inc. All rights reserved
P/N 305976
Full Power Balanced
X Series Power Amplifiers
700cx, 400cx, 300cx Stereo
750Mcx, 450Mcx, 350Mcx Monaural
with Krell CAST II Technology
Instructions for Use
v 03.0
CONTACT
INFORMATION
WARNINGS
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.
Sustained Plateau Bias III™ is a trademark of Krell Industries, Inc. and is a Krell technology based on U.S.
Patent No. 5,331,291. CAST™, CAST II™, Krell Current Mode™, Krell Link™, and Krell Playback System™
are trademarks of Krell Industries, Inc. All other trademarks are registered to their respective companies.
