Amplifier Operation, VDC Remotepowerout | Krell Industries KAV-150a

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-150awith the poweractivation of another Krell ®compo- nent as well as with other componentsused in a custominstallation.

Note

Consu/t the owner's manua/of any device usedin a custominsta//ation to take furl advantageof the remotecapabi/ity of the KAV-150a.

CONFIGURING THE KAV-150a

FOR BRIDGED OPERATION

TheKAV-150amaybe configured to operate in a bridgedmodeTo.implementthis configu- ration:

1.Turnthe KAV-150aoff.

2.Locatethe red switch on the backof the amplifier andslide it fromthe NORMAL position to the BRIDGEDposition. The numera/2 will appearon the switch, when the switchis in the BRIDGEDposition.

3.Connectthe interconnect cable to the BRIDGEDinput, either balancedvia the XLRconnector or single-ended via the RCAconnector. Donot use both inputs simultaneously. Connectthe speaker cables to the speakerterminals labeled BRIDGED(-)and BRIDGED(+)The. lifier is nowreadyfor bridgedoperation.

Amplifier Operation

It is easyto understandthe operationof the KAV-150aamplifier. However,great care needsto be exercisedwhenoperatinga sys- temthat includes the KAV-150a,becauseof the amplifier's enormouspower output.

Switching betweenactive sources without muting the preamplifier output, or bump- ing/miscuinga cartridge, cangeneratelarge transients at low frequencies.TheKAV-150a amplifier maygenerate enoughpowerwith these transients to .damagemostloudspeak- ers. All switchingof sourcesshouldbe done withthe preamplifierlevel eithermutedor fully attenuated.Donot changeinputs to the ampli- fier whilethe amplifieris on.

Note

Caremustbe taken whensetting high p/ay- back leve/s. Becauseof their tremendous reserve of c/ean power,Kre//~ amp/ifiers can safe/y drive speakersto higher sound pressure /evels than other amplifiers. A/waysturn the/eve/downat the first sign of speakerdistress.

ON/OFF AND STANDBY OPERATION

Whenpowering up any system, amplifiers shouldalwaysbeturnedon last andturnedoff first.

1.Pressthe powerbutton onthe front panel of the KAV-150aPowerAmplifier.Youwill heara click. Theamplifier is readyfor operation.

2.Withthe systempreamplifier in the mute position, or the volumecontrolfully atten- uated, select a source. Turn the volume controlupto the desiredlistening level.

3.When.turning the systemoff, lower the volumeof the systempreamplifier com- pletely or placeit into the muteor stand- by position. Turnthe KAV-150aoff. It is nowsafe to tumoff the rest of the system.

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KRELL®KAV-150a

KAV-150a specifications

The Krell Industries KAV-150a is a powerful amplifier that has gained a dedicated following among audiophiles and home audio enthusiasts. Renowned for its robust build quality and exceptional audio performance, the KAV-150a delivers an immersive listening experience that highlights the best in music reproduction.

One of the most striking features of the KAV-150a is its Class A/B amplification design. This architecture combines the advantages of both Class A and Class B operation, allowing the amplifier to provide high power output while maintaining low distortion levels. The KAV-150a is capable of delivering 150 watts per channel into 8 ohms, and the power increases to 300 watts per channel at 4 ohms, making it suitable for driving a wide variety of loudspeakers.

Another key characteristic of the KAV-150a is its fully balanced input circuitry. Utilizing balanced XLR inputs, the amplifier minimizes noise and interference, preserving the integrity of the audio signal throughout the amplification process. This design choice is critical for maintaining clarity, particularly in complex musical passages or dynamic soundscapes.

The KAV-150a also features a unique heat dissipation system, which incorporates a toroidal transformer and large heatsinks to ensure efficient cooling. This feature helps to maintain consistent performance during extended listening sessions, preventing overheating and enabling the amplifier to operate reliably under high-demand conditions.

In terms of build quality, Krell is known for their solid construction, and the KAV-150a is no exception. It boasts a durable chassis that not only enhances its aesthetic appeal but also contributes to its resistance to vibrations that could adversely affect sound quality.

Moreover, the KAV-150a includes various input options that cater to different audio setups, making it versatile enough to integrate easily into most home audio systems. Its user-friendly design allows for straightforward connections and adjustments, whether using traditional analog sources or digital components.

In conclusion, the Krell Industries KAV-150a stands out in the market for its impressive combination of power, clarity, and build quality. Audiophiles and music lovers seeking an amplifier that delivers faithful sound reproduction will find the KAV-150a to be a worthy investment, capable of enhancing their overall listening experience across a broad spectrum of music genres. With its advanced technological features and solid engineering, the KAV-150a continues to be a favored choice among high-end audio enthusiasts.