B&K ST1400 User Manual

Table of contents

Safety Precautions

Purpose and function

Design and construction

Features

Rear panel view

Rear panel description

Level controls

Inputs

Outputs

System installation

Making the connection

Control Muting

Troubleshooting

Specifications

Care and cleaning

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page 4-5

page 5

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page 6

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page 9-10

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page 11

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Warranty

Accessories included: Manual and Power cord

Page 1

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I CAUTION I

RISK OF ELECTRIC SHOCK

A

DO NOT OPEN

A

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 ST1400 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.

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■ The process of optimizing the system will include the type of cable, the length of
the run, arxl the obstructions it must deal with along its run. Your dealer can
advise you on the products available and their relative merits. If building custom
length audio cables is not your strength, your dealer should be able to help you
with that as well.

■ When possible, use a separate AC power line for the amplifier, one that is not
shared by any other component in the system of any other house hold
component.

Tip: Take a piece of stout string (longer than the longest cable run) and mark it at each foot of length.

Then do a mock cable run using the string, dressing it neatly along the way. Count the divisions to the
next full foot, and add one foot to allow for some movement of the components. This will provide you
with the ideal cable length.

Making the connection

Before doing anything, ensure that the power switch on the amplifier’s front panel
is in the ‘off’ position (rocker side in towards center of amplifier). Again, it is
recommended that you locate a separate AC power outlet for the amplifier, one

that is not shared by any other audio component in the system or any other

house hold component. This will eliminate the possibility of the amplifier
‘modulating’ the power being supplied to the component and compromising the
signal originating from that component.

Locate the AC power cord provided with the amplifier and plug it into the power
input receptacle in the rear panel. Do not connect it to the AC power source
yet!

Connect the audio cables from your preamplifier’s output to the corresponding
input connector on the amplifier. (Refer to Diagram 1)

Connect the wires from your speakers to the appropriate (R,L) output on the
amplifier. It is absolutely essential that you observe correct polarity in these
connections. (Refer to Diagram 1)

Example: If you connect your right front output of your preamplifier to channel 1
input on the amplifier, remember to connect your right front speaker wires to channel
1‘s outputs. Aiways observe poiarity when connecting speakers, connect ampiifiers
(+) to the speakers (+) and amplifiers (-) to speakers (-)

Double check all connections.

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@ CTRL IN

Signal

Signal
No Signal
No Signal IN

PROBLEM

No sound
(‘on’ LED not illuminated)

No sound on some or all
selected channels (‘on’
LED illuminated)

Button position

OUT

IN

OUT

Output status @ CTRL OUT

Sound Signal
Sound

Mute No Signal

Sound Signal

Troubleshooting

POSSIBLE CAUSE

1. Power cord not plugged in.

2. Power off at AC source.

3. AC power inlet fuse blown or
faulty.

4. Control switch in the wrong
position.

1. Speaker leads loose or
faulty.

2. Line stage to amp. cables
loose, or faulty.

3. Source to line stage cables
loose or faulty.

4. Line stage or source not
correctly selected.

Signal

POSSIBLE SOLUTION

1. Reconnect power cord.

2. Check AC switch or fuse.

3. Check for shorts or
overloading.

4. Place control switch in
proper position (page 9).

1. Tighten, repair, or
replace cable

2. Tighten, repair or replace
cable

3. Tighten, repair or replace
cable

4. Check all switch settings.

Sound lacks direction,
bass weak

Loud hum or buzz on one
or more channels

Low output from amplifier

Channel sounds distorted
and low in output

1. Speakers connected out of
phase.

1. Poor ground connection in
interconnect cables.

1. Balanced switch in balanced
mode when using
unbalanced inputs.

1. Blown rail fuse.

1. Check connections
making sure that cables
are connected {+) to (+)
and (-) to (-).

1, Check all connectors and

repair as necessary.

1. Put balanced switch in
correct position.

1. Replace blown rail fuse
inside amplifier.

** Note: If unit continues to blow power inlet fuses, DO NOT USE A HEAVIER

FUSE!!, have it serviced.

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Limited Warranty

B&K Components Ltd., referred to herein as B&K, warrants your B&K equipment against all defects in
material and workmanship for a period of five years from the date of purchase. This warranty applies
only to the original purchaser and only to equipment in normal residential use and service. Defective
equipment must be returned to B&K, prepaid, accompanied by sufficient payment to cover the cost of
return shipping and handling, and will be repaired or replaced at the discretion of B&K whose decision
as to the method of reparation will be final.

This warranty shall not apply to any equipment whioh is found to have been improperly installed,
incorrectly fused, misused, abused, or subjected to harmful elements, used in any way not in
accordance with instructions supplied with the unit, or to have been modified, repaired or altered in any
way without the expressed, written consent of B&K. This warranty does not apply to the cabinet, the
remote controller, or appearance items such as the faceplate, control buttons, or display lenses, nor
does it cover any expenses incurred in shipping the unit to and from the manufacturer’s service depot.

No warranty, implied or otherwise created by State law shall extend beyond the terms of this warranty
and B&K shall not be liable for any incidental or consequential damage arising out of a defect in material
or workmanship of the unit during the terms of this warranty or thereafter. Some States do not allow the
exclusion or limitation of incidental or consequential damages and the foregoing exclusions may not
apply to you.

This warranty gives you specific legal rights. Your may also have other rights which vary from State to

State.

No agent, representative, dealer or employee of B&K has the authority to increase or alter the

obligations or terms of this warranty.

B&K Components Ltd.____________________________________________________________

RETURNING EQUIPMENT

No equipment may be returned to B&K Components Ltd. Without a RETURN AUTHORIZATION.

Should you find it necessary to return equipment to B&K, for any reason, a RETURN AUTHORIZATION

(RA) number must be issued by B&K in respect of the equipment being returned. You may request an

RA number by calling B&K at the numbers below. We ask that you provide the following information at

that time.

2. Your name, address, and phone number.

3. The model and serial number of the equipment being returned.

4. A description of the problem being experienced.

Your call will be referred to a Technical Service Representative who will work with you to resolve the

problem. If it is determined that the unit must be returned for repair, an RA number will be issued.

B&K Components Ltd. 2100 Old Union Road, Buffalo New York 14227

1-800-543-5252 or 1-716-656-0023

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