Related Manuals for Krell Industries 700cx
Summary of Contents for Krell Industries 700cx
- 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 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™...
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Page 3: Table Of Contents
REMOTE CONTROL OPERATION How to Turn Off the Amplifier LEDs How to Turn On the Amplifier LEDs How to Switch between Krell CAST and XLR Inputs Using a Dedicated Wall Outlet and Switch AMPLIFIER TROUBLESHOOTING How to Troubleshoot System Noise... - Page 4 Front Panel FIGURE 2 The Full Power Balanced Monaural Amplifier Front Panel FIGURE 3 The Full Power Balanced Stereo Amplifier Back Panel FIGURE 4 The Full Power Balanced Monaural Amplifier Back Panel Krell Full Power Balanced X Series Power Amplifiers...
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Page 5: Introduction
Power Amplifier. The Full Power Balanced X Series consists of three stereo ampli- fiers, the Full Power Balanced 700cx, 400cx, and 300cx Stereo Power Amplifiers and three monaural amplifiers, the Full Power Balanced 750Mcx, 450Mcx, and 350Mcx Monaural Power Amplifiers. -
Page 6: Definition Of Terms
CONFIGURATIONS Krell Trigger A method of synchronizing remote control operation for Krell sys- tems that include multiple preamplifiers, amplifiers, and associated components. When Krell Trigger in/out connections are used, the remote capabilities of the linked components are controlled from one component, called the control component. - Page 7 Krell Current Mode TECHNOLOGY A proprietary Krell circuit topology in which the audio gain stages of a component operate in the current rather than voltage domain. This unique technology provides the component with exceptional speed and a wide bandwidth.
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Page 8: Revolutionary Krell Cast And Cast Ii Technology
Krell Current Mode cir- cuitry. This current signal is then output using CAST circuitry. When the signal is received by a CAST input, Krell Current Mode circuitry again takes over until the signal reaches the loudspeaker. By main- taining the musical signal in the current domain from beginning to end, an entire CAST II system behaves as if it is one component. - Page 9 The goal for CAST is the same company goal used for all Krell products. Krell strives for the delivery of the best performance of a musical event for you, using the full expression of technology to date.
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Page 10: Unpacking
If any of the items mentioned above are not included in the ship- Notes ping box, please contact your authorized Krell dealer, distributor, or Krell for assistance. Save all packing materials. If you ship your Full Power Balanced amplifier in the future, repack the unit in its original packaging to prevent transit damage. -
Page 11: Placement
Full Power Balanced amplifier, see Specifications, on pages 25–26. Place the amplifier as close to the loudspeakers as possible. Krell CAST technology permits you to use interconnect cables of any length, see Revolutionary CAST II Technology, on page 4; how- ever, try to keep the cable length to a minimum. -
Page 12: Front Panel Description
Figure 1 The Full Power Balanced Stereo Amplifier Front Panel Figure 2 The Full Power Balanced Monaural Amplifier Front Panel Krell Full Power Balanced X Series Power Amplifiers... - Page 13 Front Panel Description The front panel accesses power on/stand-by and remote control functions. The power stand-by, bias, regulator, and Krell CAST II LEDs, arranged in a triangle on the front panel above the power button, illuminate to indicate amplifier status.
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Page 14: Back Panel Description
Figure 3 The Full Power Balanced Stereo Amplifier Back Panel Figure 4 The Full Power Balanced Monaural Amplifier Back Panel Krell Full Power Balanced X Series Power Amplifiers... - Page 15 14 Krell CAST Inputs The Krell CAST inputs allow the Full Power Balanced amplifier to be connected to the KPS 25sc Krell Playback System and other CAST-equipped components.
- Page 16 (Labeled on the back panel.) KRELL LINK Krell Trigger remote out/in connectors that allow a remote control to operate a linked amplifier configuration. See Krell Trigger Connections, on page 14 for more information. An optional remote control is available for Full Power Balanced ampli- Note fiers.
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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 operation using the balanced XLR inputs. The following steps describe how to connect cables to the Full Power CONNECTION STEPS Balanced Amplifiers. -
Page 18: Krell Trigger Connections
Connect one end of the MIDI cable to the Krell Trigger out con- nector (17) on the back panel of the component. 4. Connect the other end of the MIDI cable to the Krell Trigger in connector on the next component. -
Page 19: Using A Tube Preamplifier
An authorized Krell deal- er, distributor, or Krell must activate these capacitors. Coupling capacitors must be inserted into the signal path by your authorized Krell dealer, distributor, or Krell before you can use your Full Power Balanced amplifier with a tube preamplifier. IMPORTANT... -
Page 20: Amplifier Operation
You hear a click. The amplifier is ready for operation. If the Krell CAST input is being used, the Krell CAST red LED (5) illuminates and remains illuminated at all times during stand-by or on modes. -
Page 21: Krell Trigger Operation
When all components are linked, see How to Connect Com- OPERATION ponents Using Krell Trigger, on page 14, place each compo- nent in the stand-by mode by moving the back panel power breaker switch to the up position. This ensures that all compo- nents will be synchronized when signals from the control com- ponent are sent to the linked components in the system. -
Page 22: Remote Control Operation
LEDs illuminate during the turn-on sequence. Press the meter key on a Krell remote to switch between CAST HOW TO SWITCH inputs and the balanced XLR inputs. -
Page 23: Amplifier Troubleshooting
LEDs, as described in the following table. Notes The Krell CAST LED illuminates only if a Krell CAST input is being used. There are no output fuses in Full Power Balanced amplifiers. Krell Full Power Balanced X Series Power Amplifiers... - Page 24 The amplifier powers down DC present at the output Contact your authorized Krell completely and no LEDs illu- stage dealer, distributor, or Krell minate Internal amplifier problem Contact your authorized Krell dealer, distributor, or Krell Krell Full Power Balanced X Series Power Amplifiers...
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Page 25: Questions And Answers
This can often be easily eliminated. Please contact your authorized Krell dealer, distributor, or Krell for sug- gestions on how to solve this problem. My system includes multiple pairs of loudspeakers. Can I connect... - Page 26 (in which DC current goes to the loudspeakers due to loss of amplifier power). Clipping can damage loudspeakers. Avoid damage to your speakers by reviewing your loudspeaker specifications and exercise caution in heavy demand situations. Krell Full Power Balanced X Series Power Amplifiers...
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Page 27: Warranty
This Krell product has a limited warranty of five years for parts and labor on circuitry. Should To register your product for this product fail to perform at any time during the warranty, Krell will repair it at no cost to the warranty benefits, please owner, except as set forth in this warranty. -
Page 28: Return Authorization Procedure
WEB SITE http://www.krellonline.com HOW TO RETURN To return a product to Krell, please follow this procedure so that we A PRODUCT may serve you better: 1. Obtain a Return Authorization Number (R/A number) and ship- ping address from the Krell Service Department. -
Page 29: Specifications
200.0 lb., 90.9 kg SHIPPING 90.0 lb., 40.9 kg 110.0 lb., 50.0 kg 180.0 lb., 81.8 kg UNIT ONLY All operational features, functions, specifications, and policies are subject to change without notification. Krell Full Power Balanced X Series Power Amplifiers... - Page 30 155.0 lb., 70.5 kg SHIPPING 68.0 lb., 31.0 kg 98.0 lb., 44.5 kg 140.0 lb., 63.6 kg UNIT ONLY All operational features, functions, specifications, and policies are subject to change without notification. Krell Full Power Balanced X Series Power Amplifiers...
- Page 31 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, FAX 203-891-2028 750Mcx, 450Mcx, 350Mcx Monaural E-MAIL krell@krellonline.com with Krell CAST II Technology WEB SITE www.krellonline.com v03.0...