Input and Output Connections

Connecting the KAV-250aor KAV-250a/3 Amplifier to Your System

The following steps describe howto connect cables to the KAV-250aor KAV-250a/3 amplifier.

1.Neatly arrangeandorganizethe wiring to andfromthe amplifier andall components.SeparateACwires from audio cables to prevent humor other unwantednoise from being introduced into the system.

21Connectthe loudspeakercables to the KAV-250aamplifier channel output speaker binding posts (7, 8), or the KAV-250a/3amplifier channeloutput speakerbinding posts (22, 23, 24) located on their respective backpanels.

The amplifier channel outputs for the KAV-250aand KAV-250a/3use five-way loudspeakerbinding posts. Theloudspeakerbinding post terminals accept spade lugs, barewire, bananaplugs, or pins. Usethe red terminal for the positive connectionandthe black terminal for the negativeconnection.

3.Connectthe interconnect cables from your output device to the amplifier inputs. The KAV-250ais equippedwith balanced(3, 4) or single-ended(5, 6) inputs and KAV-250a/3is equippedwith balanced(16, 17, 18) or single-ended(19, 20, inputs located on their respective backpanels. Thebalancedinputs use three-pin XLRconnectors; the single-ended inputs use RCAconnectors.

4.Insert the end of the ACpowercord into the IEC powerconnector on the KAV-250a (13) or KAV-250a/3(29) backpanel. Insert the other endinto the ACwall outlet.

Theamplifier is nowreadyfor operation. SeeAmplifier Operation, on page25.

TheKAV-250aor KAV-250a/3amplifier is shippedwith shorting pins in the XLR inputs. Thesepins shouldremainin the XLRinputs if the amplifier is operatingin the single-endedmode.Whenthe shorting pin is inserted, pins 1 and3 are shorted together. Removethe shorting pins to connectthe amplifier for balancedoperation.

TheXLRpin configuration is describedbelow:

Pin 1	Ground
Pin 2	°)Non-inverting(0
Pin 3	°)Inverting (180

Krell recommendsusing balancedinterconnect cables. Balancedinterconnect cables not only can minimizesonic loss but are also immuneto inducednoise, especially with installations using long cables. Balancedconnectionshave6 dBmoregain than single- endedconnections.Whenlevel matchingis critical, keepthis gain value in mind.

14	KAV-250aand KAV-250aJ3Amplifiers

KAV-250a/3 specifications

Krell Industries has long been a name synonymous with high-performance audio equipment, and the KAV-250a/3 is no exception. This power amplifier is designed to deliver an exceptional listening experience for audiophiles who demand both power and precision in their sound systems. The KAV-250a/3 integrates advanced technology and craftsmanship, earning its place in both home theater and high-fidelity audio systems.

One of the standout features of the KAV-250a/3 is its robust power output. With a staggering 250 watts per channel into 8 ohms, and an impressive 500 watts into 4 ohms, this amplifier is capable of driving even the most demanding speakers with ease. This allows for a dynamic range that brings music to life, making every note and subtle sound clearly audible.

The KAV-250a/3 employs Krell's proprietary CAST (Current Mode Amplification) technology. This technology minimizes distortion and enhances overall audio performance by allowing the amplifier to reproduce audio signals with minimal interference. The result is a sound that is both rich and detailed, providing a tactile listening experience that engages the listener fully.

In terms of build quality, the KAV-250a/3 stands out with its meticulously engineered chassis. It features a heavy-duty aluminum front panel and a solid steel chassis that not only provides durability but also helps reduce resonant vibrations that can affect sound quality. The design incorporates a cooling system with large heatsinks, ensuring that the amplifier remains cool even during extended listening sessions.

Additionally, the KAV-250a/3 includes multiple input options, allowing it to seamlessly integrate with various audio sources. It also features balanced XLR inputs, which provide increased noise rejection and signal integrity for high-end setups.

Krell’s commitment to delivering superior sound is evident in the KAV-250a/3's performance. It produces a sound stage that is both expansive and detailed, allowing users to hear nuances in their favorite recordings that may have gone unnoticed with lesser amplifiers. Overall, the Krell KAV-250a/3 embodies a fusion of power, technology, and craftsmanship, making it a top choice for audiophiles seeking an unparalleled audio experience.