ST140M
Single Channel Amplifier
OWNER’S MANUAL
B & K Components Ltd.
12999 rev 0005
B&K Components, Ltd., 2100 Old Union Road, Buffalo, New York 14227
12999 rev 0005
Table of contents
Safety Precautions |
Page 2 |
Purpose and function |
Page 3 |
Design and construction |
Page 3 |
Features |
Page 3 |
Rear panel view |
Page 4 |
Rear panel description |
Page 4 - 5 |
Control muting |
Page 5 - 6 |
Level controls |
Page 6 |
Outputs |
Page 7 |
Inputs |
Page 8 |
System installation |
Page 9 |
Making the connection |
Page 9 - 10 |
Troubleshooting |
Page 11 |
Care and cleaning |
Page 11 |
Specifications |
Page 12 |
Warranty |
page 13 |
Accessories included: |
Manual and Power cord |
Page 1 |
12999 rev 0005 |
SAFETY PRECAUTIONS
PLEASE READ BEFORE INSTALLING
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user of the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be sufficient magnitude to constitute a risk of electric shock to you.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the unit.
Observance of polarity is essential. Double-check connections before turning the amplifier on. The amplifier can be damaged if polarities are incorrect.
Damage can occur to your speakers if the power rating* of each individual driver is exceeded by the amplifier. Ensure that all the drivers in your speaker system are capable of handling not only the power being delivered by the amplifier, but the energy that is likely to be generated during strong passages.
Turn amplifier ‘off’ when plugging in or unplugging input and speaker cables!!!
The ST140M is equipped with raised feet so that continuous ventilation can be maintained. They help to maintain acoustic feedback into the amplifier at a minimum. They also provide a measure of protection against scratching any surface the unit might be resting on. Do not alter or remove them.
Do not stack anything on top of the amplifier (preamplifier, processor, source...etc.).
Leave at least 2-3 inches clearance from the top of the amplifier to the next shelf, component, etc., to ensure proper ventilation.
*If you are at all unsure of what the speaker ‘ratings’ are, contact your dealer.
Page 2 |
12999 rev 0005 |
The The ST140M's purpose and function
The ST140M is a compact, very efficient, single channel power amplifier. It is designed to be used in all types of audio or audio/video systems.
Design and construction
The ST140M utilizes high quality electronic circuitry to achieve an environment wherein a detailed, transparent, and highly musical sound can be realized. The high quality parts complement include state-of-the-art solid state devices, 1% metal film resistors, computer grade electrolytic power supply capacitors, and a high capacity toroidal transformer.
The ST140M operates class A predriver and AB high current MOSFET power output stages. It is capable of reproducing the most demanding audio signals at rated power levels.
Features
Toroidal Transformers - Efficient high current transformer for improved dynamics.
Discrete Circuitry - More accurate and three dimensional reproduction of source material.
Class A Predriver - Improves low level detail for smoother, more musical sound.
AB MOSFET Output Stage - For efficient and linear power delivery.
Limited Protection - Provides short term protection from accidental shorting of output devices and protection from thermal overload.
Gold Plated Connectors - Improve connections for better sound and minimized signal loss and degradation.
1% Metal Film Resistors - Low noise resistors for better sound and a greater degree of repeatability.
High Current - Ability to reproduce demanding recordings.
Computer Grade Capacitors - Large capacity computer grade electrolytic capacitors for extended low frequency control and improved dynamics.
Page 3 |
12999 rev 0005 |
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