Related Manuals for Krell Industries 350Mcx
Summary of Contents for Krell Industries 350Mcx
- Page 1 Full Power Balanced X Series Power Amplifiers THE LEADER IN AUDIO ENGINEERING 700cx, 400cx, 300cx Stereo 750Mcx, 450Mcx, 350Mcx Monaural with Krell CAST II Technology Instructions for Use Owner’s Reference...
- Page 2 This product is manufactured in the United States of America. Krell tries, 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.
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Page 3: Table Of Contents
Krell Full Power Balanced X Series Power Amplifiers AC Power Guidelines 700cx, 400cx, and 300cx Stereo Power Amplifiers 750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers 700cx, 400cx, and 300cx Stereo Power Amplifiers 750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers Input and Output Connections... - Page 4 Illustrations FIGURE 1 Full Power Balanced Stereo Amplifier Front Panel FIGURE 2 Full Power Balanced Monaural Amplifier Front Panel FIGURE 3 Full Power Balanced Stereo Amplifier Back Panel FIGURE 4 Full Power Balanced Monaural Amplifier Back Panel Krell Full Power Balanced X Series Power Amplifiers...
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Page 5: Introduction
700cx, 400cx, and 300cx Stereo Power Amplifiers and three monaural amplifiers, the Full Power Balanced 750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers. Installa- tion, connection, and operation of all amplifiers in the Full Power Balanced series are identical; however, a pair of Full Power Balanced Monau- ral amplifiers are required for stereo operation. - Page 6 Definition of Terms, Single-ended A two-wire input or output circuit. Use care when using single-ended connections as the ground connection is made last and broken first. Turn the system off prior to making or breaking single-ended connections. Single- ended connections are not recommended for connections requiring long cable runs.
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Page 7: Revolutionary Krell Cast And Cast Ii Technology
Revolutionary Krell CAST and CAST II Technology Current Audio Signal Transmission, termed CAST, is a revolutionary method of connecting analog audio components for unparalleled sonic performance. CAST circuitry, and the CAST circuitry update, Krell CAST II, combine innovative engineering with existing Krell Cur- rent Mode technology to create entire CAST systems that reproduce music with incredible range, tonality, and precision. -
Page 8: Unpacking
Unpacking Two people are needed to remove the Full Power Balanced amplifier from its shipping box safely and easily. 1. Open the shipping box and remove the top layer of foam. You see these items: 1 Full Power Balanced Amplifier 1 Packet containing the owner’s reference manual and the warranty registration card... -
Page 9: Ac Power Guidelines
Placement, continued AC POWER GUIDELINES The Full Power Balanced 300cx and 350Mcx amplifiers need to be operated from a dedicat- ed AC power line rated at a minimum of 15 amps. The Full Power Balanced 700cx, 750Mcx, 400cx, and 450Mcx amplifiers need to... -
Page 10: Figure 1 Full Power Balanced Stereo Amplifier Front Panel
FIGURE 1 FULL POWER BALANCED STEREO AMPLIFIER FRONT PANEL 1 Power Stand-by LED 2 Bias LED 3 Power Button 4 Infrared Sensor 5 Krell CAST LED 6 Regulator LED Krell Full Powered Balanced X Series Power Amplifiers... -
Page 11: Figure 2 Full Power Balanced Monaural Amplifier Front Panel
FIGURE 2 FULL POWER BALANCED MONAURAL AMPLIFIER FRONT PANEL 7 Power Stand-by LED 8 Bias LED 9 Power Button Krell Full Powered Balanced X Series Power Amplifiers 10 Infrared Sensor 11 Krell CAST LED 12 Regulator LED... -
Page 12: Front Panel Description
Note An optional remote control is available for Full Power Balanced amplifiers. FULL POWER BALANCED 750Mcx, 450Mcx, AND 350Mcx MONAURAL POWER AMPLIFIERS See Figure 2 on page 7 7 Power Stand-by LED The blue power stand-by LED (top of LED tri-... -
Page 13: Figure 3 Full Power Balanced Stereo Amplifier Back Panel
FIGURE 3 FULL POWER BALANCED STEREO AMPLIFIER BACK PANEL 13 Left and Right Speaker Binding Posts 14 Krell CAST Inputs 15 Back Panel Power Breaker Switch Krell Full Powered Balanced X Series Power Amplifiers 16 Left and Right Balanced Inputs... -
Page 14: Figure 4 Full Power Balanced Monaural Amplifier Back Panel
FIGURE 4 FULL POWER BALANCED MONAURAL AMPLIFIER BACK PANEL 20 Handle 21 Speaker Binding Posts 22 Krell CAST Input 23 Balanced Input 24 AC Mains Power Cord 25 Krell Link Out/In 26 Back Panel Power Breaker Switch Krell Full Powered Balanced X Series Power Amplifiers... -
Page 15: Back Panel Description
Back Panel Description The back panel provides connections for all inputs and outputs, power on/off, and remote control links. The back panel also has handles that allow you to safely and easily move the amplifier. FULL POWER BALANCED 700cx, 400cx, AND 300cx STEREO POWER AMPLIFIERS See Figure 1 on page 6 13 Left and Right Speaker Binding Posts... -
Page 16: 750Mcx, 450Mcx, And 350Mcx Monaural Power Amplifiers
21 Speaker Binding Posts Full Power Balanced 750Mcx, 450Mcx, and 350Mcx monaural amplifiers are equipped with two pairs of speaker binding posts (one upper pair and one lower pair). For stereo operation, two monaural amplifiers are required. -
Page 17: Connecting The Full Power Balanced Amplifier To Your System
A one piece RCA-to-XLR adapter is available from Krell Industries, to allow single-ended oper- ation using the balanced XLR inputs. The following steps describe how to connect cables to the Full Power Balanced Amplifiers. -
Page 18: Dc Protection Circuitry
Connecting, continued 4. Connect the other end of the MIDI cable to the Krell Link in connector on the next com- ponent. To link another component, connect a sec- ond MIDI cable to the Krell Link out con- nector on the back panel of the second component. -
Page 19: Amplifier Operation
Amplifier Operation Full Power Balanced amplifiers are easy to install and operate. However, it is important to exercise care during operation, due to the amplifiers’ enormous power output. Switching between active sources (such as a CD player, tape monitor, or VCR) without muting the pre- amplifier output, or bumping or miscuing a source can generate large transients at low fre- quencies. -
Page 20: Remote Control Operation
Remote Control Operation Full Power Balanced amplifiers are compatible with the remote controls included with Krell pre- amplifiers, the Home Theater Standard 7.1, and the KPS 25sc Krell Playback System. Please contact your authorized Krell dealer, dis- tributor, or Krell to purchase a remote control for Full Power Balanced amplifiers. -
Page 21: Amplifier Troubleshooting
Amplifier Troubleshooting HOW TO TROUBLESHOOT SYSTEM NOISE AC grounding becomes critical when connect- ing high performance audio components. When you mix and match audio components, each with its own ground potential, a low frequency hum may occur in one or both speakers. This often occurs when introducing a new compo- nent into a system. - Page 22 If the course of action listed in the table below does not correct the situation, please con- tact your authorized Krell dealer, distributor, or Krell. AMPLIFIER CONDITION The output mutes during playback and the following LEDs illuminate: Power Stand-by, and Regulator Bias The amplifier switches to stand-by mode and the...
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Page 23: Questions And Answers
Questions and Answers Q. Should I leave my Full Power Balanced amplifier on at all times? A. For maximum amplifier performance, leave the back panel power breaker switch on at all times. This places the amplifier in stand-by mode. Full Power Balanced amplifiers are designed to be powered on and off from stand- by, using the front panel power button. -
Page 24: Warranty
Warranty This Krell product has a limited warranty of five years for parts and labor on circuitry. Should this product fail to per- form at any time during the warranty, Krell will repair it at no cost to the owner, except as set forth in this warranty. The warranty does not apply to damage caused by acts of God or nature. -
Page 25: Return Authorization Procedure
Return Authorization Procedure If you believe there is a problem with your com- ponent, please contact your dealer, distributor, or the Krell factory to discuss the problem before you return the component for repair. To expedite service, you may wish to complete and e-mail the Service Request Form in the Service Section of our website at: www.krellonline.com... -
Page 26: Specifications
Specifications Full Power Balanced 300cx, 400cx, 700cx Stereo Amplifiers FREQUENCY RESPONSE SIGNAL TO NOISE RATIO “A” WEIGHTED GAIN TOTAL HARMONIC DISTORTION (THD) ALL BALANCED, UNWEIGHTED INPUT IMPEDANCE INPUT SENSITIVITY OUTPUT POWER EACH CHANNEL DRIVEN OUTPUT VOLTAGE POWER CONSUMPTION INPUTS OUTPUTS SPEAKER BINDING POSTS REMOTE CONTROL DIMENSIONS... - Page 27 Specifications Full Power Balanced 350Mcx, 450Mcx, 750Mcx Monaural Amplifiers FREQUENCY RESPONSE SIGNAL TO NOISE RATIO “A” WEIGHTED GAIN TOTAL HARMONIC DISTORTION (THD) ALL BALANCED, UNWEIGHTED INPUT IMPEDANCE INPUT SENSITIVITY OUTPUT POWER EACH CHANNEL DRIVEN OUTPUT VOLTAGE POWER CONSUMPTION INPUTS OUTPUTS...
- Page 28 Krell Industries, Inc. Full Power Balanced 45 Connair Road X Series Power Amplifiers Orange, CT 06477-3650 USA 700cx, 400cx, 300cx Stereo TEL 203-799-9954 750Mcx, 450Mcx, 350Mcx Monaural FAX 203-891-2028 E-MAIL krell@krellonline.com with Krell CAST II Technology WEB SITE http://www.krellonline.com v 02.0...