Krell Industries 350Mcx, 450Mcx, 400cx, 700cx manual Back Panel Description

Page 15

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

Full Power Balanced 700cx, 400cx, and 300cx stereo amplifiers are equipped with four pairs of speaker binding posts (upper left, lower left, upper right, and lower right).

Notes

Two pairs of speaker binding posts are used for each channel of amplification. On the stereo or monaural Full Power Balanced amplifiers, either the upper or the lower pair can be used with speakers having two pairs of binding posts. For biwiring applications, with speakers having more than one pair of binding posts, use both upper and lower pairs of speaker binding posts. See the speaker’s instruction manual for biwiring connections.

Speaker binding posts for stereo and monaural amplifiers accept spade lugs only. Bare wire, banana lugs, or pins will not work. Use the red terminal for the positive connection and the blue terminal for the negative connection.

14 Krell CAST Inputs

Full Power Balanced 700cx, 400cx, and 300cx stereo amplifiers are equipped with one left Krell CAST input and one right Krell CAST input via 4- pin bayonet connectors. The Krell CAST inputs allow the Full Power Balanced amplifier to be connected to the KPS 25sc Krell Playback Sys- tem and other CAST-equipped components.

15 Back Panel Power Breaker Switch

Full Power Balanced amplifiers are equipped with a back panel power breaker switch, for powering on the amplifier. Placing the back panel power breaker switch in the up position places the amplifier in stand-by mode, where it remains until the front panel power button (3) is pressed.

Note

Krell recommends that the amplifier remain on, in stand-by mode, even when not in use, once it is powered on from the back panel power breaker switch (15).

16 Left and Right Balanced Inputs

Full Power Balanced 700cx, 400cx, and 300cx stereo amplifiers are equipped with one left bal- anced input and one right balanced input via XLR connectors.

17 Krell Link Out/In

Full Power Balanced amplifiers are equipped with Krell Link Remote out/in connectors that allow the remote control to operate a linked amplifier configuration. See Krell Link Connec- tions, on page 13 for more information.

Note

An optional remote control is available for Full Power Balanced amplifiers.

18 AC Mains Power Cord

All Full Power Balanced amplifiers are equipped with a permanently attached AC power cord.

19 Handles

All Full Power Balanced stereo amplifiers are equipped with two handles, located beside the speaker binding posts, to help you easily and safely move the amplifier.

Krell Full Power Balanced X Series Power Amplifiers

11

Image 15
Contents Instructions for Use Owner’s Reference Full Power Balanced Series Power AmplifiersFull Power Balanced Series Power Amplifiers Contents Illustrations Krell Link ConfigurationsKrell Current Audio Signal Transmission Cast IntroductionDefinition of Terms OperationTechnology Cast Cable Construction How Cast and Krell Current Mode InteractCast a New Approach Cast BasicsOlutionary Krell Cast and Cast II Technol UnpackingPlacementAC Power Guidelines PlacementFull 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 Krell Cast Input Power AmplifiersHandle Speaker Binding PostsConnecting the Full Power Balanced Amplifier to Your System Input and Output ConnectionsKrell Link Connections Connecting Using a Tube PreamplifierDC Protection Circuitry Krell Link Operation Amplifier OperationHOW to Switch Between Krell Cast and XLR Inputs Remote Control OperationHOW to Turn OFF HOW to Turn onAmplifier Troubleshooting HOW to Troubleshoot System NoiseHOW to Evaluate Amplifier Operation Model, see Using a Tube Preamplifier, on Questions and Answers Warranty Return Authorization Procedure Full Power Balanced 300cx, 400cx, 700cx Stereo Amplifiers SpecificationsFPB 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.