Krell Industries 700cx, 350Mcx Connecting, DC Protection Circuitry, Using a Tube Preamplifier

Page 18

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. Connect the remaining end of the MIDI cable to the Krell Link in connec- tor on the back panel of a third component.

5.Link additional components, if desired, as described in Steps 3 and 4.

The components are now ready for operation with Krell Link.

DC PROTECTION CIRCUITRY

Full Power Balanced amplifiers use unobtrusive direct current (DC) protection circuitry that strips DC from the signal without corrupting sound reproduction. Full Power Balanced amplifiers feature direct coupled circuitry from input to output. This topology eliminates all cou- pling capacitors from the audio signal path. Coupling capacitors block damaging DC but have sonic characteristics that corrupt sound reproduction.

Note

For more information about DC protection cir- cuitry features, see Amplifier Troubleshooting, on page 17.

USING A TUBE PREAMPLIFIER

The high DC output of tube preamplifiers may exceed the DC protection circuitry of Full Power Balanced amplifiers. Excessive DC level in a signal can damage amplifiers, speak- ers, or both. The coupling capacitors in Full Power Balanced amplifiers must be engaged when using a tube preamplifier. An authorized Krell dealer, distributor, or Krell must activate these capacitors.

Coupling capacitors must be inserted into the signal path by your authorized Krell dealer, dis- tributor, or Krell before you can use your Full Power Balanced amplifier with a tube preampli- fier.

IMPORTANT

Please read the Warranty, on page 20, to understand the warranty limitations of Full Power Balanced amplifiers when used with tube preamplifiers.

14

Krell Full Power Balanced X Series Power Amplifiers

Image 18
Contents Full Power Balanced Series Power Amplifiers Instructions for Use Owner’s ReferenceFull Power Balanced Series Power Amplifiers Contents Illustrations Introduction ConfigurationsKrell Current Audio Signal Transmission Cast Krell LinkDefinition of Terms OperationTechnology Cast Basics How Cast and Krell Current Mode InteractCast a New Approach Cast Cable ConstructionUnpackingPlacement Olutionary Krell Cast and Cast II TechnolPlacement AC Power GuidelinesFull Power Balanced Stereo Amplifier Front Panel Full Power Balanced Monaural Amplifier Front Panel Stereo Power Amplifiers Monaural Power AmplifiersFront Panel Description Full Power Balanced Stereo Amplifier Back Panel Full Power Balanced Monaural Amplifier Back Panel Back Panel Description Speaker Binding Posts Power AmplifiersHandle Krell Cast InputConnecting the Full Power Balanced Amplifier to Your System Input and Output ConnectionsKrell Link Connections Connecting Using a Tube PreamplifierDC Protection Circuitry Amplifier Operation Krell Link OperationHOW to Turn on Remote Control OperationHOW to Turn OFF HOW to Switch Between Krell Cast and XLR InputsAmplifier Troubleshooting HOW to Troubleshoot System NoiseHOW to Evaluate Amplifier Operation Model, see Using a Tube Preamplifier, on Questions and Answers Warranty Return Authorization Procedure Specifications Full Power Balanced 300cx, 400cx, 700cx Stereo AmplifiersFPB 350Mc FPB 450Mc FPB 750Mc Full Power Balanced X Series Power Amplifiers

700cx, 400cx, 300cx, 750Mcx, 450Mcx, 350Mcx, 700cx, 400cx, 450Mcx, 350Mcx specifications

Krell Industries is renowned for its high-performance audio equipment, particularly its line of powerful amplifiers that deliver premium sound quality. Among these, the 450Mcx, 700cx, 400cx, 350Mcx, and 750Mcx models stand out for their robust capabilities and advanced technologies, making them popular choices for audiophiles.

The 450Mcx is a class AB power amplifier capable of delivering an impressive 450 watts per channel into 8 ohms. This model is equipped with Krell's signature current-mode topology, which ensures a high level of linearity and a dramatic reduction in distortion. With a heavy-duty construction, including a massive power supply, the 450Mcx offers deep bass response and engaging midrange clarity.

Next in line is the 700cx, which pushes boundaries with 700 watts per channel. This amplifier features Krell's Advanced Power Supply (APS) technology, enabling it to maintain stability even under the most demanding speaker loads. The result is explosive dynamics and captivating detail, delivering a listening experience that is both immersive and exhilarating.

The 400cx is designed for versatility, providing 400 watts per channel in a compact form. This model utilizes Krell's patented CAST technology, which minimizes signal degradation, ensuring that the audio signal retains its integrity from input to output. It is ideal for both home theater and stereo applications, allowing users to enjoy a rich sonic palette.

The 350Mcx, while delivering a powerful 350 watts per channel, is designed with a focus on reliability and heat dissipation. The dual-transformer design and sophisticated thermal management system ensure consistent performance, even during prolonged usage. It embodies Krell's commitment to sound fidelity and performance longevity.

The 750Mcx takes performance to the next level with remarkable output capabilities. This amplifier is built with multiple output devices in a high-current configuration, designed to drive even the most challenging loudspeakers. Its refined circuitry contributes to a soundstage that is both wide and deep, enriching the listening experience.

In addition to these models, Krell also offers the 300cx and the 350Mcx, both designed to cater to a variety of audio preferences and configurations. Each unit is meticulously engineered to deliver ultrasensitive dynamics and a transparency that brings recordings to life.

These Krell amplifiers not only emphasize power and performance, but they also showcase luxurious design and durability. The combination of advanced technologies, such as current mode and APS, ensures that users receive a premium audio experience that stands the test of time. Whether for professional use or high-end home listening, Krell amplifiers are truly an investment in quality sound.