UnpackingPlacement

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:

1Full Power Balanced Amplifier

1Packet containing the owner’s reference manual and the warranty registration card

2.Orient the shipping box so that one person stands at the front of the amplifier and one person stands at the rear of the amplifier. Both people need to grab a pair of the card- board handle cutouts (one pair located at the front of the amplifier and one pair located at the rear of the amplifier) and simultaneously lift the amplifier straight up, out of the carton.

3.Place the amplifier in a safe location and remove the protective plastic wrapping.

Notes

If any of the items mentioned above are not included in the shipping 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 tran- sit damage. See Return Authorization Proce- dure, on page 21 for more information.

Before you install the Full Power Balanced amplifier into your system, please follow the guidelines in this section to choose its proper location. This will facilitate a clean, trouble-free installation.

The Full Power Balanced amplifier requires at least two inches (5 cm) of clearance on each side and at least eight inches (20 cm) of clear- ance above the component to provide ade- quate ventilation.

Although Sustained Plateau Bias III circuitry reduces the high heat dissipation and heat out- put of traditional Class A circuitry, Full Power Balanced amplifiers still can become hot under normal operation.

When the front and rear of a cabinet are open the air space between the chassis and shelf must be unobstructed. If you place the amplifi- er in a closed cabinet, you may need to modify shelf spacing or use small fans to increase ven- tilation. For the dimensions of your Full Power Balanced amplifier, see Specifications, on pages 22–23.

Place the amplifier as close to the speakers as possible. Krell CAST technology permits you to use interconnect cables of any length, see Rev-

olutionary Krell CAST and CAST II Technol-

ogy on page 3; however, try to keep the cable length to a minimum.

All Full Power Balanced amplifiers drive the lowest impedances with ease. When imped- ance is added due to long speaker cable lengths, amplifier power is wasted in the cable. Long speaker cables reduce the maximum power that is delivered in the speakers.

4	Krell 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.