B and K ST-260 Owners manual
ST260
Two Channel Amplifier
OWNER’S MANUAL
B & K Components Ltd.
12997 REV 050500
B&K Components, Ltd., 2100 Old Union Road, Buffalo, New York 14227
Table of contents
Safety Precautions Page 2
Purpose and function Page 3
Design and construction Page 3
Features Page 4
Rear panel view Page 4
Rear panel description Page 5
Control muting Page 5 - 6
Level controls Page 6
Inputs Page 7
Outputs Page 8
Internal Bus Page 9
Jumper description Page 9 - 10
Mono application Page 11
Bridged application Page 12
System installation Page 13
Making the connection Page 13 - 14
Troubleshooting Page 15
Care and cleaning Page 15
Specifications Page 16
Warranty Page 17
Accessories included: Manual and Power cord
Page 1
SAFETY PRECAUTIONS
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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 “dan
that may be sufficient ma
nitude to constitute a risk of electric shock to you.
erous voltage” within the product’s enclosure
The exclamation point within an equilateral trian
presence of important operatin
literature accompanyin
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 ST260 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.).
the unit.
and maintenance (servicing) instructions in the
le is intended to alert the user of the
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
The ST260's purpose and function
The ST260 is a compact, very efficient, two channel power amplifier. It is designed to
be used in all types of audio or audio/video systems. The term versatile is almost
adequate to describe the variance of operational modes the ST260 is capable of
providing. This is all accomplished through the simple placement of internal jumpers
and the paralleling or bridging of it’s outputs and/or linking multiple ST260’s.
Here is a listing for some of the many tasks it can be set up to perform:
& The most obvious function for the ST260 is to take 2 separate audio
inputs, such as a stereo pair, and provide 2 separate amplified outputs.
Your ST260 has arrived set up in this configuration.
& With the inputs buffered, a line output (OUT BUS) may be taken from
either the L BUS, R BUS, or L+R BUS and sent on to another amplifier.
This allows for linking of multiple amplifiers.
& Continuing its versatility, the ST260 may be used mono to provide one,
medium current channel in order to drive a speaker requiring more power.
& As a result of the ST260’s unique bus system, the input to the left channel
may be inverted thereby allowing the possibility of creating a single high
voltage (bridged) channel from one source, through the left bus.
Design and construction
The ST260 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.
Page 3
Features
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Toroidal Transformer
Discrete Circuitry
material.
Limited Protection
devices and protection from thermal overload.
Gold Plated Connectors
loss and de
1% Metal Film Resistors
repeatabilit
Medium Current
Computer Grade Capacitors
for extended low frequenc
radation.
.
- Efficient hi
- More accurate and three dimensional reproduction of source
- Provides short term protection from accidental shortin
- Improve connections for better sound and minimized si
- Low noise resistors for better sound and a
- Abilit
to reproduce demanding recordings.
- Lar
control and improved dynamics.
h current transformer for improved dynamics.
e capacity computer grade electrolytic capacitors
Rear Panel View
of output
nal
reater degree of
)LJXUH$
1. AC fuse holder 5. Line Level outputs
2. AC Input receptacle 6. RCA inputs
3. Speaker outputs 7. Level controls
4. Amplifier control mutin
input/output
Page 4
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