XA SERIES

S T E R E O P O W E R A M P L I F I E R

Congratulations on your choice of stereo power amplifiers — you have purchased one of the finest stereo amplifiers on the marke t to- day. This unit was developed using the expertise of professional sound engineers and working musicians. You will find that your new NADY AUDIO XA-900/1100 has superior performance and greater flexibility than any other amplifiers in its price range. Please read this manual carefully to get the most out of your new unit.

Thanks for selecting NADY AUDIO as your choice in stereo power amplifiers.

FEATURES

Offering top power, superior performance and full professional operating features in a roadworthy compact chassis, the XA Series are perfect for even the most demanding sound reinforcement installation and touring applications.

The operating instruction in this manual are for the XA-900 and XA-1100 power amplifiers. The operation and functions of these units are the same, except as noted.

Full operating features: detent volume controls; parallel bal- anced XLR and 1/4" TRS inputs; stereo (dual channel), parallel- input, or bridged mono operating modes with selector switch; binding post (banana plug) outputs; ground lift switch

Full safety/reliability features: 2 dual speed fans for cooling; soft- start turn on, noise-free on-off; built-in DC offset; independent DC and thermal overload protection on each channel; short cir- cuit and speaker protection; DC servo operation; built-in digital current limiter

Power ON, Clip, Signal, and Protect LED indicators for each channel

Roadworthy, rugged double rack space (2U) housing

~115(60Hz)/~230V(50Hz) AC select switch and IEC power cord connector with built-in fuse

XA-900 - 2 x 300W @ 4Ω , 2 x 400W @ 2Ω

Bridged mono: 675W @ 4Ω

XA-1100 - 2 x 475W @ 4Ω , 2 x 730W @ 2Ω Bridged mono: 1100W @ 4Ω

TABLE OF CONTENTS

FEATURES

3

WARNING

4

FRONT & REAR PANEL CONNECTIONS

5

INSTALLATION

6

CONNECTIONS

7

BLOCK DIAGRAM

9

SPECIFICATIONS

10

Date of Purchase ____________________________________

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Nady Systems SPA 850 owner manual Features, Table of Contents

SPA 850 specifications

The Nady Systems SPA 850 is a powerful and versatile audio amplifier that caters to a wide range of audio applications, from live performances to installation in venues. This robust product is designed to deliver high-quality sound with remarkable clarity and reliability, making it an excellent choice for musicians, sound engineers, and venue operators.

One of the standout features of the Nady SPA 850 is its impressive power output. With an output of 850 watts at peak performance, it allows users to drive large speakers effectively, ensuring that sound reaches every corner of the space. This makes it ideal for concerts, public speaking events, and theater productions. The amplifier is equipped with built-in protection circuits that safeguard the device against overheating and short circuits, ensuring long-term durability.

The SPA 850 utilizes advanced technology to enhance audio quality. It incorporates a high-efficiency Class D amplifier design, which not only provides exceptional sound fidelity but also contributes to energy efficiency. This means users can enjoy powerful audio performance without excessive power consumption, making it an environmentally friendly option. Furthermore, the low total harmonic distortion ensures that the output sound remains clear and undistorted, even at high volumes.

This unit includes versatile connectivity options to accommodate various audio sources. It is equipped with multiple input channels, including XLR and 1/4-inch inputs, allowing for seamless integration with microphones, instruments, and other audio devices. The adjustable gain controls make it easy to optimize sound levels for different sources, providing flexibility for a wide range of applications.

The Nady SPA 850 also features a compact and durable design, making it suitable for both portable and fixed installations. Its lightweight construction facilitates easy transport, while the sturdy build ensures that it can withstand the rigors of frequent use in various environments.

Additionally, the amplifier is designed with user-friendly controls and indicators, making it accessible even for those new to audio equipment. The straightforward layout allows for quick adjustments, ensuring users can focus on delivering an outstanding audio experience.

In summary, the Nady Systems SPA 850 is a remarkable audio amplifier that combines power, efficiency, and versatility. Its robust features and advanced technologies make it an attractive choice for anyone seeking reliable sound amplification in diverse settings.