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KMA-160 OWNER, S MANUAL: INSTALLATION & OPERATION INSTRUCTIONS

JUNE. !,.. 19.89

GENERAL INFORMATION

Thank you for purchasing the KMA-160 Monaural Amplifiers. The

KMA-i60 represents the absolute latest evolution in amplifier technology and has many innovative design features. It is one of four

amplifiers in the new KRELL Programmable Series, the features of which are are discussed below. There are several aspects of its operation that require your special attention and understanding

before installation is begun. Also, this document contains much general information concerning audio system installation in addition to specifics of the KMA-160.

PURE CLASS A OPERATION AND POWER CONSIDERATIONS

The KMA-160 is rated as delivering 160 watts of Class A power into 8 ohms. One inherent aspect of Class A operation is the need for a large amount of current from the AC mains. The amplifier at idle draws 8 amps. However, the Class A rating does not completely reveal the true, overall power of the KMA-160, both in terms of output power or AC power consumption. The amplifiers' maximum output into 8 ohms is 240 watts per channel.

That every KRELL product uses Class A circuitry in all gain and

supply stages is a foundation of our design philosophy. A second design commitment that relates to amplifiers is that every unit be capable of doubling its output into successively lower impedances.

The KMA-160 will deliver 320 watts per channel into 4 ohms; 640 watts per channel into 2 ohms and 1280 watts per channel into i ohm. And there is headroom over these figures! It is capable of driving impedances below I ohm. Use below i ohm requires adjustment of the Programmable Low Impedance Limit Set circuit on the Protection Board. This adjustment is performed by the dealer or distributor.

Given the above, the AC power supplied to the amplifier is crucial to getting maximum performance. The KMA-160 pair should have a dedicated 20 amp line.

Telephone:(203) 799-9954/ FAX:(203)799-9796

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Krell Industries KMA-160 owner manual General Information, Pure Class a Operation and Power Considerations
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KMA-160 specifications

Krell Industries, a revered name in the high-end audio equipment sector, has earned accolades for its commitment to quality and performance. Among their esteemed lineup, the KMA-160 stands out as a testament to Krell's engineering prowess and dedication to delivering an exceptional listening experience.

At the heart of the KMA-160 is its impressive amplification technology. This monoblock amplifier harnesses Krell’s proprietary Class A technology, ensuring that audio signals are amplified with pristine clarity and minimal distortion. With a power output of 160 watts into 8 ohms, the amplifier provides ample headroom, making it capable of driving a wide range of loudspeakers with ease. For those seeking further power, it delivers 320 watts into 4 ohms, showcasing its robust design and capability to handle more demanding speakers effortlessly.

One of the standout features of the KMA-160 is its fully balanced design. This configuration not only enhances the amplifier’s noise rejection but also contributes to richer, more dynamic sound reproduction. The absence of ground loops and interference results in a clean and immersive audio experience, allowing listeners to appreciate the nuances of their favorite music.

The KMA-160 employs Krell’s innovative iBias technology, which allows the amplifier to operate in Class A mode for superior sound quality while maintaining exceptional efficiency. This technology adapts to the speaker load, ensuring that the amplifier delivers maximum power with minimal heat generation. As a result, the KMA-160 remains cool even during extended listening sessions, emphasizing Krell’s focus on longevity and reliability.

Additionally, the KMA-160 features precision engineering with a rigid chassis that minimizes vibrations and unwanted resonance. This attention to detail ensures that the sound remains uncolored, faithfully rendering the original recording without compromising on timbre or depth.

Connectivity options on the KMA-160 are versatile, allowing for seamless integration into various audio setups. Equipped with XLR inputs, it ensures compatibility with professional-grade audio equipment while delivering balanced signal transmission.

With its blend of cutting-edge technology and elegant design, the Krell KMA-160 is not just an amplifier; it is an embodiment of high-fidelity audio performance. For audiophiles seeking an amplifier that marries power with precision, the KMA-160 is a worthy contender that promises to elevate any audio experience.
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