Krell Industries KAV-250a manual Linking Multiple Amplifiers TM Ti Multi AmpThroughput MAT

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minimizesonic loss but also haveimmu- nity to inducednoise,especiallyfor instal- lations using long cable lengths..Balan- ced connections have 6dB more gain than single-ended connections. When level matchingis critical, keepthis speci- fication in mind.

WARNING

Useonlyoneset of inputsto the amplifier at a time. TheKAV-250aamplifier is shippedwith shorting pins in the XLRinputs. Thesepins should remain in the XLRinputs if the KAV-250aamplifier is operatingin the single- endedmode.Whenthe shorting pin is insert- ed, pins 1 and3 are shorted together. The shorting pins mustbe removedto connectthe KAV-250aamplifier for balancedoperation.

TheXLRpin configuration is describedbelow:

Pin 1

Ground

Pin 2

°)Non-inverting(0

Pin 3

°)Inverting (180

3.Insert the ACpowercordinto the recepta- cle located on the backof the KAV-250a amplifier. Insert the other endinto the AC wall receptacle.

4.Theamplifier is now~eadyfor operation. SeeAmplifier Operation, on page 7.

Linking Multiple Amplifiers--

TM Ti)

Multi AmpThroughput (MAT

For systemscontaining multiple amplifiers, TM ~M)

Multi AmpThroughput (MAT simplifies ~-M

installations. MAT providesa daisy-chain system option that reduces installation complexity and cabling requirements. To use this option, connectthe outputs of the amplifier (either balancedvia XLRor single- endedvia RCAconnectors) to the inputs of another amplifier. The output of the first amplifier sendsthe preamplifier signal to the next amplifier in the chain.

12 VDC REMOTEPOWERIN

This input accepts12 volt poweron/off sig- nals from other Krell components,as well as from other devices that incorporate a 12 volt poweron/off trigger output. This allows for remoteturn on/off of the KAV-250awith the poweractivation of another Krell com- ponent as well as with with other compo- nents usedin a custominstallation.

12 VDC REMOTEPOWEROUT

This output sends12 volt poweron/off sig- nals to other Krell components,as well as other devices that incorporate a 12 volt poweron/off trigger input. This allows for remoteturn on/off of the KAV-250awith the power activation of another Krell compo~ nent as well as with other componentsused in a custominstallation,

NOTE:Consult the owner's manualof any device usedin a custominstallation to take full advantageof the remotecapability of the KAV-250a.

®

KRELL KAV-250aEnglish Page5 of 12

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Contents AVH-eO~ KAV-250a Amplifier Introduction PlacementCE MarkingUnpacking Connecting the KAV-250a to Your System Linking Multiple Amplifiers TM Ti Multi AmpThroughput MAT KAV-250a Backplateand Connectionsfor Bridged Operatin SystemNoise Considerations Amplifier OperationWarranty ReturnAuthorization Procedure KAV-250a Specifications

KAV-250a specifications

Krell Industries has long been synonymous with high-fidelity audio equipment, and the KAV-250a amplifier stands as a testament to the company's dedication to producing premium sound solutions. This powerful amplifier is engineered to deliver exceptional performance, making it a sought-after component for audiophiles and home theater enthusiasts.

The KAV-250a is a solid-state amplifier, featuring Krell's renowned fully complementary circuit topology. This design principle ensures that both positive and negative signal paths are treated equally, resulting in a cleaner and more precise audio output. With a power rating of 250 watts per channel into 8 ohms, and an impressive 500 watts per channel into 4 ohms, the KAV-250a can easily drive a wide range of loudspeakers, from efficient models to more demanding ones.

One of the standout characteristics of the KAV-250a is its sophisticated power supply. It incorporates a massive toroidal transformer and large reservoir capacitors, which not only enhance dynamic range but also contribute to the amplifier's ability to reproduce transient sounds accurately. This robust power supply design allows for impressive control over the speakers, resulting in tight bass response and a more engaging listening experience.

The KAV-250a also features Krell's proprietary Cast technology, which is designed to minimize distortion and maximize signal fidelity. This balanced differential circuit helps maintain the integrity of the audio signal throughout the amplification process, ensuring that listeners experience music exactly as the artist intended. Additionally, the amplifier is designed with both balanced XLR and single-ended RCA inputs, providing flexible connectivity options for various audio sources.

Thermal management is another key consideration in the KAV-250a's design. The amplifier incorporates a sophisticated heat sink system that efficiently dissipates heat, ensuring reliable performance even during extended listening sessions. This attention to cooling not only protects the internal components but also contributes to the overall longevity of the unit.

In summary, the Krell KAV-250a amplifier embodies the pinnacle of audio innovation and engineering excellence. Its powerful performance, advanced technologies, and high-quality build materials position it as a leading choice for those seeking to enhance their audio system. Whether for critical listening or immersive home theater applications, the KAV-250a delivers an unparalleled audio experience that truly reflects Krell's legacy in high-end audio.