introduction 1

welcome

Congratulations on your purchase of a new LT / ST Series professional power amplifier and thank you for your con- fidence in Crest Audio products. You are among the growing number of audio professionals who have made Crest Audio one of the world’s leading suppliers of professional and commercial/industrial audio systems.

For your safety, please read the Important Precautions section before installing and operating the amplifier.The Crest Audio LT and ST Series amplifiers are designed for high operating efficiency and accurate sonic performance across the full audio bandwidth, even under stressful conditions.

The Crest Audio LT and ST series both utilize Class D amplifier technology which greatly improves the efficiency of the amplifier and reduces the power demand from the mains supply.The LT amplifier incorporates a linear power supply whereas the ST uses a resonant switching supply with power delivery characteristics similar to a linear sup- ply but with greatly reduced weight. Both power supply designs are built to the same uncompromising standards. This, combined with major advances in amplifier technology provides for extreme reliability and sonic accuracy for which Crest products are renown.

The Crest audio LT series and ST series amplifiers differ in power supply design,electrical efficiency and weight how- ever, their feature sets are identical. For this reason, the majority of this users manual applies to both models.

LT linear-toroid power supply

A traditional linear power supply is used in the LT Series. Because of the amplifier sections efficiency, (approx 93%) the transformer does not need to be as big or as heavy.This gives the LT Series an advantage in deliver- ing more power in a more compact package.

The efficiency of the output stage also gives the power supply the ability to handle heavy-duty cycles without compromising sonic integrity.

ST resonant-switching power supply

The ST amplifier switching power supply employs a resonant design which utilizes zero-power switching technology.

Benefits of resonant-switching include:

•reduced power component stress for better reliability and efficiency

•20dB lower noise than conventional switching supplies (and therefore more EMC friendly)

•behaves like a classic linear supply, but with the added advantages of size and weight reduction

In order to maintain strict quality assurance standards, all Crest Audio power amplifiers are built in our state-of-the- art USA manufacturing facility. Internal components are the finest available and key sub-assemblies are pre-tested before final assembly. Each amplifier is “burned in” and thoroughly tested (using precision audio test equipment) before shipping. In addition, all LT / ST Series amplifiers incorporate Crest’s exclusive TourClass® protection features to safeguard both internal circuitry and connected loudspeakers.

This proven combination of advanced design,quality construction and comprehensive circuit protection is your guar- antee of fail-safe reliability. You can depend on consistent, stable performance even when your LT / ST Series ampli- fier is subjected to punishing extremes in the most demanding fixed or mobile sound reinforcement applications.

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Peavey LT Series, ST Series Introduction, Welcome, LT linear-toroid power supply, ST resonant-switching power supply
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LT Series, ST Series specifications

Peavey Electronics, a pioneer in audio equipment, has made significant strides in the amplifiers market, particularly with its LT and ST series. These series embody Peavey’s commitment to quality sound, rugged design, and innovative technology, making them popular among both novice musicians and seasoned professionals.

The Peavey LT Series is designed primarily for portable use, making it an excellent choice for musicians on-the-go. One of the prominent features of the LT Series is its lightweight construction, allowing for easy transport without compromising sound quality. The series incorporates advanced DSP technology, which provides users with a variety of sound shaping tools. This includes presets for different genres and venues, ensuring that artists can achieve the desired tone quickly and efficiently. Additionally, the LT models often include Bluetooth connectivity, enabling musicians to stream music and use mobile apps for easy control and adjustments.

On the other hand, the Peavey ST Series is tailored more towards permanent installations and professional settings. These models boast higher wattage output, catering to larger venues and more demanding applications. The ST Series amplifiers are renowned for their robust build quality, with heavy-duty enclosures designed to withstand the rigors of live performances. The signature Peavey sound is preserved in these models, thanks to their high-efficiency circuits and premium components. The ST Series is equipped with advanced cooling systems to prevent overheating, ensuring reliable performance even during extended use.

Both series utilize Peavey’s patented technologies, such as the DDT (Dynamic Download Technology) which protects speakers from distortion by dynamically adjusting power levels without sacrificing sound fidelity. This technology not only enhances sound clarity but also extends the life of the connected speakers, making the LT and ST series efficient and long-lasting investments.

Moreover, the user interface on Peavey’s LT and ST models is designed for ease of use, featuring intuitive controls that allow musicians to tweak their sound in real time without getting lost in complex menus. The durability and reliability of these amplifiers make them suitable for a variety of applications, from small venues to large concert halls.

In summary, the Peavey LT and ST series represent exceptional choices for various musical contexts, driven by innovative technology, quality construction, and versatile performance capabilities. Whether needed for portable gigs or fixed installations, these series deliver powerful, clear sound that meets the demands of today’s musicians.
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