B&K ST260 Bedienungsanleitung

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

Page 1

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 2

SAFETY PRECAUTIONS

PLEASE READ BEFORE INSTALLING

WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT

TO RAIN OR MOISTURE.

The li

htnin

flash with arrowhead, within an equilateral trian

le, is intended to alert the

user of the presence of uninsulated “dan

erous volta

e” within the product’s enclosure

that may be sufficient ma

nitude to constitute a risk of electric shock to you.

The exclamation point within an equilateral trian

le is intended to alert the user of the

presence of important operatin

and maintenance (servicin

) instructions in the

literature accompanyin

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 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.).

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 ‘ratin

s’ are, contact your dealer.

Page 3

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 4

)LJXUH$

Features

Toroidal Transformer - Efficient hi

h current transformer for improved d

namics.

Discrete Circuitry - More accurate and three dimensional reproduction of source

material.

Limited Protection - Provides short term protection from accidental shortin

of output

devices and protection from thermal overload.

Gold Plated Connectors - Improve connections for better sound and minimized si

nal

loss and de

radation.

1% Metal Film Resistors - Low noise resistors for better sound and a

reater de

ree of

repeatabilit

Medium Current - Abilit

to reproduce demandin

recordin

Computer Grade Capacitors - Lar

e capacit

computer

rade electrol

tic capacitors

for extended low frequenc

control and improved d

namics.

Rear Panel View

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 5

Rear panel description

1. AC fuse holder - Holds the AC Line fuse. This fuse is an 8 Amp / 250 Volt

Slow Blow fuse. Replace with same type and value fuse

only.

2. AC Input receptacle - For attaching the supplied AC power cord to the

amplifier.

3. Speaker outputs - For connecting the speakers to the amplifier. Explained

further on page 8.

4. Amplifier control muting input/output -

To provide remote switching of mute on/off of the amplifier.

Explained further on page 5.

5. Line level outputs - For connecting signal to another amplifier (daisy chaining).

6. RCA inputs - For connecting signal patch cables (interconnects) from the

preamplifier to the amplifier to pass signal.

7.Level controls - For adjusting the input level to the amplifier. Explained

further on page 6.

Control muting

A control is provided on each ST260 amplifier to allow remote switching of mute on/off.

The preamplifier’s control output, such as is provided with B&K series preamplifiers, can

be utilized to provide a control signal to the ST260. If more than one amplifier is being

controlled, the control signal can be extended to include each successive unit by simply

running an RCA type audio cable from the CTRL OUT connector of the first amplifier to

the CTRL IN connector of the next unit (commonly referred to as ‘daisy chaining’). An

example of how to connect two amplifiers is illustrated in figure B.

If a source other than a B&K series preamplifier is used to control multiple amplifiers,

only the control output voltage from the source is critical. It must be within the range, as

indicated on the rear panel, 5-24 volts DC is required. The amplifier will provide each

successive amplifier with a control voltage of 12 volts DC for reliable operation. The

amplifiers control output may be used as a source of 12 VDC @ 125 mA for other user

applications as well. DO NOT POWER MOTORS WITH THIS CIRCUIT.

Page 6

)LJXUH%

If the control function is desired, each unit in the system must remain connected at all

times and the control must be enabled. To enable the control function, the CTRL

ENABLE button must be out for each controllable amplifier in the system. For more

information on the amplifiers output status under various control conditions, refer to the

table below.

@ CTRL IN Button position Output status @ CTRL OUT

Signal OUT Sound Signal

Signal IN Sound Signal

No Signal OUT Mute No Signal

No Signal IN Sound Signal

*Note: The control volta

e is for mutin

control only. Each amplifier must be connected

to its own source of AC power in order for it to operate.

Level controls

There are two level controls on the back of the amplifier. One level control for each

channel.

When using the level controls, first start with them turned all the way up (clockwise).

Then adjust them according to your system requirements to match the sound level

coming from each speaker. This is a rough adjustment for matching different driver

impedances. Any fine tuning should be done by the preamplifier.

Page 7

)LJXUH&

)LJXUH'

Example: When using 4 ohm and 8 ohm speakers together, the 4 ohm may sound

louder then 8 ohm at a given volume level. The level controls on the amplifier are used

to match the speakers volume level. Clockwise will increase the output. Counter

clockwise will decrease the output.

Inputs

RCA type connectors accept line input from the preamplifier’s unbalanced output

connectors. There are two input connectors, one for each channel, that may be used to

connect the amplifier to the preamplifier.

RCA cable connector -

Here is a typical input setup:

You will notice the OUT BUS connections shown above. You may use these to connect

to another amplifier. The L BUS OUT carries the same signal as the L INPUT. The R

BUS OUT carries the same signal as the R INPUT. The L+R BUS OUT carries the

combined signal from the left and right inputs.

Page 8

)LJXUH(

Outputs

Five wa

bindin

posts are provided. One pair for each channel. The

are desi

ned to

accept a banana-t

pe plu

or spade lu

connector (shown below) and are color coded

for eas

identification. The red (+) post should alwa

s be connected to the speakers (+)

jack. The black (-) post should alwa

s be connected to the speakers (-) jack.

Spade connector Banana

ack

Here is a t

pical amplifier setup:

Inhaltsverzeichnis

Andere B&K Verstärker Handbücher

B&K

B&K 2627 Benutzerhandbuch

B&K

B&K AVP 4090 Bedienungsanleitung

B&K

B&K EX4420M Bedienungsanleitung

B&K

B&K ST55.2 Bedienungsanleitung

B&K

B&K ST1200 Bedienungsanleitung

B&K

B&K VMR-6.5.4 Bedienungsanleitung

B&K

B&K CT300.3 Bedienungsanleitung

B&K

B&K ST140M Bedienungsanleitung

B&K

B&K ST-120 Bedienungsanleitung

B&K

B&K AV2500 Series II Bedienungsanleitung

B&K

B&K Reference 3220 Bedienungsanleitung

B&K

B&K REFERENCE 200.5 S2 Bedienungsanleitung

B&K

B&K FIVE OR SEVEN CHANNEL 125.5 S2 Bedienungsanleitung

B&K

B&K AV100.2 Bedienungsanleitung

B&K

B&K Reference 220M Bedienungsanleitung

B&K

B&K Reference 70 HT 70 Bedienungsanleitung

B&K

B&K AV125.5 Bedienungsanleitung

B&K

B&K AVP 2030 Bedienungsanleitung

B&K

B&K ST1400 Series II Bedienungsanleitung

B&K

B&K Reference 70 Bedienungsanleitung

B&K

B&K ST1200 Bedienungsanleitung

B&K

B&K AV6000/654 Bedienungsanleitung

B&K

B&K 5 Series II Bedienungsanleitung

B&K

B&K 13790 1104 Bedienungsanleitung

Beliebte Verstärker Handbücher anderer Marken

ASTRO

ASTRO HVO V40 P Bedienungsanleitung

Marantz

Marantz SUPERSCOPE BLA-545 Montageanleitung

NAD

NAD CI980 Bedienungsanleitung

Technics

Technics SE-CH770 Bedienungsanleitung

Harman Kardon

Harman Kardon HK6300 Bedienungsanleitung

NAD

NAD T975 Bedienungsanleitung

McIntosh

McIntosh MA6850 Bedienungsanleitung

Electro-Harmonix

Electro-Harmonix ENGLISH MUFF’N Bedienungsanleitung

Viatron

Viatron Autrix Bedienungsanleitung

GME

GME GA9800 Bedienungsanleitung

Atlas

Atlas CP700 Bedienungsanleitung

Roland

Roland KC-1000 Bedienungsanleitung

Pyle

Pyle PFMRA350BW Bedienungsanleitung

Advantage

Advantage S-250 Bedienungsanleitung

IRT Electronics

IRT Electronics DVA-3007 Bedienungsanleitung

Dimavery

Dimavery BA-100 Series Bedienungsanleitung

Sony

Sony XM-S400D Bedienungsanleitung

Schertler

Schertler ROY X Bedienungsanleitung