PROTECTION CIRCUITRY

Your REFERENCE Class A amplifier is protected against both overheating and short circuits by means of the following circuits:

∙Main power supply fuses

∙Smart Power Supply Thermal Rollback activating at 85°C.

∙A fail-safe thermal protection circuit activating at 95°C.

Your amplifier also incorporates an innovative Fault Diagnosis system that

NOTE: If you experience blown main power supply fuses, DO NOT increase values beyond the original fuse value! Doing so will void your warranty and may

damage your amplifier. If you blow fuses with the REFERENCE Class A amplifiers, it is likely that the amplifier is seeing a dead short, either in the speaker

TROUBLESHOOTING

PROBLEM

CAUSE

 

 

No sound and power LED is

∙ No power or ground at amp

not lit

∙ No remote turn-on signal

 

 

∙ Blown fuse near battery

 

 

No sound, a power LED is lit,

∙ No signal input

and the AIRBASS™ option

∙ The AIRBASS™ switch is in the "IN" posi-

has not been added.

tion. Move it to the "OUT" position

 

 

 

Fault LED is lit

∙ Amp power supply fuse is blown or miss-

 

ing

 

 

Repeatedly blown amp fuse,

∙ Speaker or leads may be shorted

frequent activation of Smart

∙ Verify adequate amplifier ventilation

Power Supply Circuit

 

 

 

Not enough input sensitivity

∙ Be sure both Left and Right Input Signal

while using Balanced input

Switches are set to the "BAL" position

 

 

Left and Right Input Over-

∙ Input signal level is too high - readjust in-

load indicators lighting

put gains, or select the 0.5-5V input signal

 

level range

 

 

Alternator whine while using

∙ Make sure the Right Input Signal Switch is

Unbalanced RCA inputs

in the "UNBAL" position.

 

∙ Try the Left Input Signal Switch in the

 

"BAL" and "UNBAL" position: leave the

 

switch in the quietest position. This will

 

18

 

not effect the performance of the amplifier.

 

 

TABLE OF CONTENTS

 

Design Features

4 - 5

AIRBASS™

5

Reference Class A 5.0 Diagram

6 - 7

Reference Class A 10.0 Diagram

8 - 9

Selecting Input Modes

10

Balanced / Unbalanced Input

11

Wiring & Wiring Diagram

12 - 13

Installation and Mounting

14

Level Setting

15

LSE.Q Theory and Use

16 - 17

Protection Circuitry & Troubleshooting

18

Service

19

Specifications

19

3

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Soundstream Technologies Class A 10.0, Class A 5.0 owner manual Protection Circuitry, Troubleshooting, Table of Contents
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Class A 10.0, Class A 5.0 specifications

Soundstream Technologies has established itself as a frontrunner in the field of high-fidelity audio equipment with its innovative Class A amplifiers, most notably the Class A 10.0 and Class A 5.0. These amplifiers exemplify their commitment to superior sound quality and advanced engineering.

The Class A 10.0 amplifier is designed for audiophiles seeking unparalleled audio performance. It boasts a remarkable power output of 100 watts per channel, ensuring that even the most demanding speakers can be driven effortlessly. One of the standout features of the Class A 10.0 is its true Class A operation, meaning it operates at all times in the Class A range, delivering a warm and rich sound signature. This type of operation reduces distortion significantly, allowing for a more authentic reproduction of audio across various frequencies.

In contrast, the Class A 5.0 amplifier caters to smaller setups without compromising on sound fidelity. With an output of 50 watts per channel, it is ideally suited for compact systems or near-field monitoring applications. Despite its smaller size, the Class A 5.0 still utilizes Class A circuitry, promising a similarly lush audio experience.

Both models integrate innovative technologies to enhance performance. They utilize high-quality components, including carefully-selected capacitors and low-noise transistors, which contribute to the amplifiers' exceptional sound clarity. The advanced thermal management system ensures that these amplifiers maintain optimal operating temperatures, enhancing reliability and durability during extended listening sessions.

Additionally, the integrated power supply in both amplifiers is designed to minimize voltage fluctuations, further refining audio output. This feature is crucial for preserving the integrity of the sound, especially during peaks in musical dynamics. Each model also features a fully balanced input, which significantly reduces noise interference from external sources.

In summary, the Soundstream Technologies Class A 10.0 and Class A 5.0 amplifiers are perfect embodiments of the brand's dedication to delivering exceptional audio performance. With their Class A operation, powerful outputs, and advanced technological features, these amplifiers stand out in a competitive market, appealing to audiophiles and casual listeners alike. Whether for a home theater system or a studio setup, these amplifiers guarantee a superior listening experience characterized by clarity, warmth, and minimal distortion.
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