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Acknowledgments
Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are
registered trademarks of Lucasfilm Ltd.
© Copyright 1996
All Rights Reserved.
B&K Components, Ltd. 2100 Old Union Road, Buffalo New York 14227-2725
© (716)656-0023 FAX (716)656-1291
Page 3
Table of contents
Safety Precautions
Purpose and function
Design and construction
page 2
page 3
page 3
Features
Rear panel view
Rear panel description
page 3
page 4
page 4 - 5
Level controls
Inputs
Outputs
page 5
page 5
page 6
System Installation
Making the connection
Control muting
page 6
page?
page 8 - 9
Troubleshooting
Specifications
Care and cleaning
page 10
page 11
page 11
Warranty
Accessories included: Manual and Power cord
page 12
THX and LucasFilm are registered trademarks of Lucasfiim Ltd
Page 1
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CAUTION
RISK OF ELECTRIC SHOCK
'í
DO NOT OPEN
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 TX4430 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
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The TX4430's purpose and function
The TX4430 is a compact, very efficient, three channel power amplifier. It is designed
to be used in all types of audio or audio/video systems.
Design and construction
The TX4430 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 TX4430 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. This product is certified to meet LucasFilm Home THX standards for power
amplifiers.
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
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REAR PANEL VIEW
CAUTION
RISK O- = L=CrH.G SHUCK
:îc sct optn
I ATTENTION I
DANfiTR D Tl rCTROCüTION
nl has Ouvrir
FUSE
MIIIAH r» £lKL1l|IIPt6
MUi mi. iiETtD HLaw.
VOLTAQE
A.C.
LINE
A
A
StH NU.
B&K Components, Ltd.
Buffalo, NY 14227-2725
Audio / Video Systems
Made in the U S A
\
R/1 OUT
PLUS MINUS
PLUS MINUS
C/2 OUT
WHEN SWITCH
I66CTTO
EtlA&LEn
THE AMPLIFIER
WILL only
OPERATE WHILE
Afr-14VaiQHAL
IS APPLIED
TO CTRL IN
PLUS MINUS
CTRL IN
ENABLE
oio
DEFEAT
L/3 OUT
CTRL
IN
ft*i4V
LÛ Ml
R/1
INPUT CONNECTIONS
\
y
R/1 BALANCE OFF L/3
LO H
C/2
BALANCE ®
ON
[+;
I n HI
L/3
1
...........
r
:
i+:
sV
1. AC fuse holder
2. AC Input receptacle
3. R,C,L channel speaker outputs
4. R,L balanced inputs**
5. R,C,L RCA inputs
6. R,C,L level controls
7. Amplifier control muting Input/output
** NOTE: OPTIONS NOT AVAILABLE ON THE TX4430 AMPLIFIER
1. AC fuse holder -
Rear panel description
Holds the AC Line fuse. This fuse is a 12 Amp/250 Volt
Slow Blow fuse.
2. AC Input receptacle -
For attaching the supplied AC power cord to the amplifier
3. R,C,L channel speaker outputs - For connecting the speakers to the amplifier
Page 4
Page 7
4. R,L balanced inputs - NOT AVAILABLE ON THE TX4430.
5. R,C,L RCA inputs -
For connecting signal patch cables (interconnects) from the
preamplifier to the amplifier to pass signal.
6. R,C,L level controls - For adjusting the input ievel to the ampiifier. See beiow.
7. Amplifier control muting input/output -
To provide remote muting of the amplifier.
Level controls
There are three level controls on the back of the amplifier. One level control for each
channel (R,C,L).
When using the level controls, first start with them turned all the
way up (clockwise). Then adjust them according to your system
LO HI LO HI LO Ht
requirements to match the sound level coming from each
speaker.
Inputs
R/1
C/2
L/3
The TX4430 has only one type of line input, unbalanced RCA’s.
Unbalanced - RCA type connectors accept line input from the preamplifier’s
unbalanced output connectors. There are three input connectors, one
for each channel, that may be used to connect the amplifier to the
preamplifier. They are labeled R,C,L.
RCA cable connector -
A
J
Balanced -
NOT AVAILABLE ON THE TX4430 AMPLIFIER.
Page 5
Page 8
Outputs
Five way binding posts are provided. One pair for each channel. They are designed to
accept a banana-type plug or spade lug connector (shown below) and are color coded
for easy identification. The red (+) post should always be connected to the speakers (+)
jack. The black (-) post should always be connected to the speakers (-) jack.
Spade connector Banana jack
System installation
There will most likely be a number of cables involved in the installation of your home
entertainment system. Pre-planning is essential in order to maximize system efficiency.
We recommend the followina as a means of heloino vou reach that coal:
Make a diagram of your proposed system by laying out the relative location of
each component in the system. Then lay out the proposed cable runs between
them. Number each cable and record its length on the diagram for future
reference.
Cable runs are critical in that they must be kept away from sources of power
radiation (amplifiers, power cords, heaters, etc...). For the sake of safety, they
should also be kept out of traffic areas.
The process of optimizing the system will include the type of cable, the length of
the run, and 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
vvnen possiDie, use a separale au power line lortne ampimer, one tn<
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.
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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,C) 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. Always observe polarity when connecting speakers, connect amplifiers
(+) to the speakers (+) and amplifiers (-) to speakers (-).
Double check all connections.
Plug the amplifier’s power cord into the AC power source. Turn the amplifier’s
power switch ‘on’. The panel light should be illuminated. Leave the preamplifier
turned off. Before proceeding to the next step turn the amplifier off and wait 30
seconds for the amplifier to discharge. Both the preamplifier and amplifier
should be off.
Connect a playback unit (CD, VLD, Tuner, etc...) to the preamplifier. Turn the
volume on the preamplifier to minimum. Turn on the preamplifier, then the
amplifier (in that order). Set source on the preamplifier to the playback unit
you’ve just connected. Turn volume up slowly and music should be heard from
all channels. If this is not the case, double check your installation.
Should you encounter any problems that cannot be traced to the source or the
material being played, consult the ‘TROUBLESHOOTING” section on page 10
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Note: When turning equipment ‘off’, the amplifier should always be turned off first, then
the preamplifier. When turning equipment ‘on’, the preamplifier should always be
turned on first, then the amplifier. Before turning anything on, ensure the preamplifier
is at a low volume level.
Diagram 1
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
I ATTENTION i
DANGER D'ELECTROCUTION
NE PAS OUVRIR
FUSE
uirifti PAI coNì^Huea
PPSIPCriH lUUUfT wu
Df Fl|f IFPuUt fiPPLV mrH
V.
B&K Components, Ltd.
Buffalo, NY 14227-2725
A Audio / Video Systems
Made in the U .S. A.
WHEMSwrrcH
13 SFTTO
ENABLE,
THi AMPLIFIER
W^LLONLY
OPERATE WHILE
A6^V SIGNAL
IBAPPLIEO
TO CTRL IN
CTRL IN
ENA3LË
VÙLTAtìi
A.C
SEN UG
Control muting
RIGHT
INPUT
CENTER
INPUT
LEFT
INPUT
A control is provided on each TX4430 amplifier to allow remote switching of mute
on/off. The preamplifier’s control output, such as is provided with B&K AVP series
preamplifiers, can be utilized to provide a control signal to the TX4430. 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 below.
If a source other than a B&K AVP 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.
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Range of 5-24 VDC from source
o H
WHtN SWITCH
IS SEXTO
ENABLE.
THEAMPLIFIER
WILL ONLY
OPERATE WHII-F
A6-24V SIGNAL
IS APPLIED
TO CTRL IN
CTRLIia
ENABLE
JMHL
o
D EF EAT
H o
CTRL
IN
A-Î4V
CTRL
OUT
12VOO
Control enable
button
If the control function is desired, each unit in the system must remain connected at ali
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.
* Note: The control voltage is for muting control only. Each amplifier must be connected
to its own source of AC power in order for it to operate.
@ CTRL IN
Signal
Button position
OUT
Output status
Sound Signal
@ CTRL OUT
Signal
IN
Sound
No Signal OUT Mute
No Signal
IN
Sound
Signal
No Signal
Signal
Page 9
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T roubleshooting
PROBLEM
No sound
{‘on’ LED not Illuminated)
1.
2.
3.
POSSIBLE CAUSE
Power cord not plugged in.
Power off at AC source.
AC power inlet fuse blown or
1.
2.
POSSIBLE
SOLUTION
Reconnect power cord.
Check AC switch or
fuse.
No sound on some or all
4.
1.
faulty.
Control switch in wrong
position.
Speaker leads loose or faulty
3.
4.
1
Check for shorts or
overloading.
Place control switch in
proper position (page
10).
Tighten, repair, or
selected channels (‘on’ LED | 2.
illuminated)
3.
4.
5.
Line stage to amp. cables
loose, or faulty.
Source to line stage cables
loose or faulty,
line stage or source not
correctly selected.
Level controls at MIN.
2
3
4
replace cable
Tighten, repair or
replace cable
Tighten, repair or
replace cable
Check all switch
settings.
Sound lacks direction, bass
weak
1
Speakers connected out of
phase.
5
1
Turn level controls fully
clockwise.
Check connections
making sure that
cables are connected
(+) to (+) and (-) to (-).
Loud hum or buzz on one or I 1
more channels
Low output from amplifier 1.
Poor ground connection in
interconnect cables.
Balanced switch in balanced
mode when using unbalanced
1
1
Check all connectors
and repair as
necessary.
Put balanced switch in
correct position.
Channel sounds distorted
and low in output
Hriir
Noto: If unit continues to blow power inlet fuses, DO NOT USE A HEAVIER
1
inputs.
Blown rail fuse
1.
Replace blown rail fuse
inside amplifier.
FUSE!!, have it serviced.
Page 10
Page 13
TX4430 SPECIFICATIONS
Power rating: 8 ohms
4 ohms
Frequency response
Input sensitivity
200 watts
325 watts
5 Hz - 45 kHz
1A Volts
1kHz
1 kHz
THD (S+N)
Input impedance
Damping factor
0.09 % @ 1 kHz
33.2 kohms
400
Current (peak to peak)
Slew rate
Dynamic headroom
56 Amps
14 V/usec
1.1 dB
S/N (A-weighted)
Voltage gain
Line voltage
95 dB
28.3
120/220/240 VAC switchable
Dimensions (O.A.)
Weight
Power consumption
17"(w)X16"(d)X5.75"(h)
40 lb
875 watts max
9 Amps max current draw
75 watts @ no input
Replacement fuses
Care and cleaning
Under normal use, the amplifier will not require any special care. Over time you may
Line-12 Amp/250 Volt Slow Blow
Rails- 6 Amp/250 Volt Slow Blow
wish to clean the exterior of the unit by wiping it with a damp cloth to remove any dirt of
dust that accumulates on it. Do not let any liquid enter the amplifier thru the vents in
the top cover. You may clean the connectors on the back panel with isopropal alcohol
annually.
Page 11
Page 14
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 which 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.
1.
2.
3.
Your name, address, and phone number.
The model and serial number of the equipment being returned
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
Page 12
Page 15
B&K Components, Ltd.
2100 Old Union Road
Buffalo, New York 14227
716-656-0023
www.bkcomp.com
LIST YOUR UNIT INFORMATION HERE
MODEL #
SERIAL #
DEALER NAME
■ -M
DEALER PHONE #
SALES PERSON
DATE PURCHASED
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