Krell Industries 450Mcx Specifications, Full Power Balanced 300cx, 400cx, 700cx Stereo Amplifiers

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Specifications

Full Power Balanced 300cx, 400cx, 700cx Stereo Amplifiers

 

FPB 300cx

FREQUENCY RESPONSE

20 Hz to 20 kHz

 

+0 dB, -0.05 dB

 

0.1 Hz to 240 kHz

 

+0 dB, -3 dB

SIGNAL TO NOISE RATIO

113 dB

 

“A” WEIGHTED

 

 

GAIN

26.4 dB

 

TOTAL HARMONIC

1 kHz <0.03%

DISTORTION (THD)

20 kHz <0.16%

ALL BALANCED, UNWEIGHTED

 

 

INPUT IMPEDANCE

100 kOhms

INPUT SENSITIVITY

2.34 Vrms

 

OUTPUT POWER

8 Ohms 300 W

EACH CHANNEL DRIVEN

4 Ohms 600 W

 

2 Ohms 1200 W

OUTPUT VOLTAGE

Peak to Peak138 V

 

RMS

49 V

POWER CONSUMPTION

Stand-by

60 W

 

Idle

175 W

 

Max.

1,700 W

INPUTS

1 pair balanced via

 

XLR connectors

 

1 pair CAST via 4-pin

 

bayonet connectors

OUTPUTS

4 pair (upper left,

SPEAKER BINDING POSTS

lower left, upper right

 

lower right)

 

REMOTE CONTROL

Optional

 

DIMENSIONS

 

 

INCHES

19.0w x 10.3h x 17.0d

CENTIMETERS

48.3w x 26.2h x 43.2d

FPB 400cx

20 Hz to 20 kHz

+0 dB, -0.05 dB

0.1Hz to 240 kHz +0 dB, -3 dB

117 dB

26.4 dB

1 kHz <0.03%

20 kHz <0.16%

100kOhms

2.71 Vrms

8 Ohms

400 W

4 Ohms

800 W

2 Ohms 1,600 W

Peak to Peak 170 V

RMS

60 V

Stand-by

75

W

Idle

350

W

Max.

3,000

W

1 pair balanced via XLR connectors

1 pair CAST via 4-pin bayonet connectors

4 pair (upper left, lower left, upper right lower right)

Optional

19.0w x 10.3h x 19.7d

48.3w x 26.2h x 50.0d

FPB 700cx

20 Hz to 20 kHz

+0 dB, -0.05 dB

0.1Hz to 240 kHz +0 dB, -3 dB

120 dB

26.4 dB

1 kHz <0.03%

20 kHz <0.16%

100kOhms

3.58 Vrms

8 Ohms 700 W

4 Ohms 1,400 W

2 Ohms 2,800 W

Peak to Peak 240 V

RMS

84 V

Stand-by

85

W

Idle

430

W

Max.

6,000

W

1 pair balanced via XLR connectors

1 pair CAST via 4-pin bayonet connectors

4 pair (upper left lower left, upper right lower right)

Optional

19.0w x 10.3hx 25.5d 48.3wx 26.2hx 64.8d

WEIGHT

SHIPPING

107.0 lb., 48.6 kg

127.0 lb., 57.7 kg

200.0 lb., 90.9 kg

UNIT ONLY

90.0 lb., 40.9 kg

110.0 lb., 50.0 kg

180.0 lb., 81.8 kg

All operational features, functions, specifications, and policies are subject to change without notification.

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Krell Full Power Balanced X Series Power Amplifiers

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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 LinkTechnology Definition of TermsOperation 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 Front Panel Description Stereo Power AmplifiersMonaural Power Amplifiers Full Power Balanced Stereo Amplifier Back Panel Full Power Balanced Monaural Amplifier Back Panel Back Panel Description Speaker Binding Posts Power AmplifiersHandle Krell Cast InputKrell Link Connections Connecting the Full Power Balanced Amplifier to Your SystemInput and Output Connections DC Protection Circuitry ConnectingUsing a Tube Preamplifier Amplifier Operation Krell Link OperationHOW to Turn on Remote Control OperationHOW to Turn OFF HOW to Switch Between Krell Cast and XLR InputsHOW to Evaluate Amplifier Operation Amplifier TroubleshootingHOW to Troubleshoot System Noise 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.