Hf
HOME THEATER SOUND
SURROUND AUDIO PROCESSOR
INSTALLATION/OPERATOR'S
MANUAL
CONTENTS
PAGE
Introduction
..................................
2
General Description
...........................
3
Systemsetup
.................................
4
Multiple Inputs
..............................
4
Locating Speakers
...........................
4
Connections
................................
5
Inputs
...................................
5
Outputs
..................................
5
Basic System
...........................
5
Complete System
.......................
5
Operation
..................................
6
Pushbutton Controls
.......................
6
Rotary Controls
...........................
6
...........................
Remote Control 7
Mono Enhance Adjust
......................
7
System Balance
...............................
8
Phasing
......................................
8
Graphic Display
...............................
9
Program Material
..............................
9
Trouble Shooting Guide
........................
10
Specifications
................................
11
Safety Instructions
............................
11
lY
TRODUCTION
2ongratulations. Your purchase of a Shure HTS5000
Surround Audio Processor will provide years of listen-
ing pleasure while serving as the main control component of your Home Theater Sound System. Unlike other
surround sound audio products, the
HTS5000 is capable
of recreating in your home the audio experience of the
very best motion picture theaters with Dolby Stereo1
equipment. The latest techniques in analog and digital
signal processing electronics have been employed in
the
HTS5000 to duplicate the performance of profes-
sional Dolby stereo motion picture theater equipment.
If you are quite familiar with surround sound, Dolby
Surround, and the Dolby Stereo process, you may wish
to skip ahead in the manual and set up your system using the block diagrams shown in Figures
6
and
7.
Initial
control settings are discussed starting on page
6,
and
special adjustments are described on page 8.
Since the application of Dolby Stereo to the home environment is a relatively new concept to most people,
we encourage you to read the entire manual before setting up and enjoying your
HTS5000. Several sections
have been included beyond normal system setup and
operation to help maximize your listening pleasure, and
broaden your understanding of this exciting new concept.
With any new concept, terminology is often the
source of much confusion. Because a surround sound
system can involve as many as six amplifier and
loudspeaker channels and is designed to be used with
new types of program material, a few definitions may be
helpful:
00
Dolby Stereo-
Dolby Stereo is the term used to
describe a motion picture audio process that results in
a surround sound experience in the theater. The basic
elements of such a system are three loudspeaker channels behind the screen (Left Front, Center Front, and
Right Front) and a fourth to the sides or behind the
listener. This process was developed by Dolby Labora-
tories and involves sophisticated techniques to encode
and decode four audio channels on stereo film sound
tracks. Dolby Stereo has become the most widely user'
process for producing stereo motion picture
soun,.
tracks in the world with over 700 movies made to date.
Movies made using this process display the Dolby
Stereo logo during the credit portion of the film. With
the growth of consumer audiolvideo technology, this
process is now being applied to music video and television drama production.
00
Dolby Surround
-
Dolby Surround is the term used to describe systems that allow Dolby Stereo sound
tracks to be played back in the home. All products that
carry the Dolby Surround logo must meet certain
minimum technical requirements established by Dolby
Laboratories. The Shure
HTS5000 goes beyond these requirements by a wide margin to significantly increase
the listening experience in the home as compared to
basic Dolby Surround processors. Consumer program
material that contains Dolby Stereo sound tracks will
soon be identified with the Dolby Surround logo. (See
section on Program Material for more details).
Before getting into the specifics of the
HTS5000 and
how to set it up in your home, it is worthwhile to consider the audio-visual aspects of a total home theater
system in general terms:
In the theater, the large size of the movie screen contributes greatly to the participatory quality of the experience. An effect of the big screen is to overwhelm
other stimuli, precluding attention to offscreen happenings.
The viewer is much closer to the home tv screen
thai
the moviegoer to the theater screen. As a result, the
home screen need not be absolutely as large as the
movie screen to rivet the attention comparably. But, the
larger the screen, the more participatory the experience
will be.
The largest available home screens are used with projection tv systems which vary in color quality, resolution, brightness and clarity of the off-axis image. The
most successful surround sound home televiewing experience will be with a system that has a bright on- and
off-axis picture, high resolution, and excellent color accuracy. In some viewing rooms, these qualities may be
achievable with a
19-
or 25-inch television receiver; in
most cases, a projection tv will be preferable.
A high performance audio system contributes as
much as the large screen to the participatory quality of
the theatre experience. To duplicate this quality in the
home, the system must be capable of producing high
sound pressure levels not only in the front but also in
the subwoofer (or low frequency) and surround channels. The use of a center channel loudspeaker also
becomes very important in maintaining proper audio
perspective for all viewers. In order to obtain the op-
timum listening experience using the
HTS5000, it is important to select loudspeakers and amplifiers that are
capable of producing adequate sound levels. As a basis
for comparison, a modern motion picture theater
capable of showing Dolby Stereo movies is set up to
generate maximum sound pressure levels of 108 dB
SPL
at an ideal viewing position.
1.
Manufactured under license from Dolby Laboratories Licensing Corporation. Additionally licensed under one or more of the following
patents:
U.S.
numbers 3,632,886,8,6,972, and 3,959,590; Canada
numbers 1,004,603 and 1,037,877. "Dolby" and the double-D symbol are
trademarks of Dolby Laboratories Licensing Corporation.
GENERAL DESCRIPTION
The HTS5000 Surround Audio Processor provides a
theater-sound environment in the home. This Home
Theater Sound (HTS) system decodes Dolby stereo
sound encoded in video discs, video tape, and broadcast television. The
HTS5000 provides up to six channels of audio output: left, center, right, two surround
channels, and a subwoofer. Acra-Vector* decoder circuitry replicates the directional accuracy of the finest
theater sound equipment. True digital time delays provide the same performance, free of distortion and noise,
as in the theater. The Acoustic Space Generator creates
the same immersion in sound as in the theater, but using a minimum number of speakers. All these features
help to re-create the sound field of an original theatrical
showing. The
HTS5000 can also produce simulated surround sound from ordinary stereo, and even from mono
sources.
A basic HTS Surround Sound installation employs
four loudspeakers and two stereo amplifiers; a complete system uses six loudspeakers and three stereo
amplifiers to reproduce the theater experience. The
system operates as follows.
Exclusive Acra-Vector circuits enhance the directional accuracy of the reproduced sound field. In the
front, this creates a spacious stereo panorama with
realistic "motion" effects from moving sources. The
surround channel signals are delayed according to a
user-selected digital delay setting chosen for the particular room environment, such that the shortest
delay between front and rear speakers heard by any
listener is 20 ms. Then an Acoustic Space Generator
processes the delayed signal to further enhance the
perception of spaciousness. In the basic system,
dialogue originates from a phantom center channel;
while in the complete system, a center-front speaker
delivers dialogue. This keeps the acoustic image
stably centered regardless of where the listener sits
in the room. Finally, in the complete system,
lowfrequency information (below 80 Hz) is consigned to
a subwoofer channel. (In the basic system,
lowfrequency audio is handled by the four front and sur-
round channels
-
and loudspeakers.) Because the
film industry uses very low-frequency audio as an integral part of the creation of mood and place, use of
a subwoofer reinforces the theater illusion and intensifies the verisimilitude of the performance. In both
basic and complete systems, the HTS accurately
localizes sound sources within the audio environment.
The
HTS5000 front panel controls and displays include pushbutton selectors of operating
modes: Dolby Surround, synthesized-surround stereo
or mono, and, by means of a defeat button, pure stereo
or mono. There is also pushbutton choice of the audio
source from either Left and Right inputs or Tape
Monitor Return inputs. Rotary knobs on the front adjust
the following: input level, with a five-LED level display;
input balance, with an LED for visual determination of
correct balance; digital delay time to best suit the particular listening room; and volume and surround levels.
An overriding wired Remote Control lets the listener adjust surround and overall volume levels from the listening position. The Remote also permits muting of the
audio outputs. A four-channel graphic display provides
visual demonstration of the surround characteristics of
the input signal.
The
HTS5000 rear panel includes left and right audio
inputs; outputs for front left and right and surround left
and right channels; a separately switched front-center
output jack; and a subwoofer output jack. Tape Monitor
Send outputs and Return inputs for Left and Right channels are also included. These audio input and output
jacks are all phono types. In addition, front- and
rearpanel eighth-inch diameter phone jacks accommodate
the wired Remote Control.
RISK OF ELECTRIC SHOCK
Fl
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL
The lightning flash with
arrowhead symbol, within an
equilateral triangle, is intended to alert the user to
the presence of uninsulated
"dangerous voltage" within
the product's enclosure that
may be of sufficient magnitude to constitute a risk of
electric shock to persons.
The exclamation point
within an equilateral trangle
is intended to alert the user
to the presence of important
operating and maintenance
(servicing) instructions in
the literature accompanying
the appliance.
'Patent pending
SYSTEM SETUP
To install a Surround Sound System, you will need the
following.
For a basic system:
1 HTS5000
1 Dolby Stereo source (e.g., video disc player,
video tape player, stereo tvlaudio receiver, audio
tape player, stereo turntable, CD player)
2
Stereo power amplifiers (one of these may be an
existing hi-fi receiver or amplifier)
4
Full-range loudspeakers (two of these may be the
hi-fi system loudspeakers)
For a complete system, add:
1 Stereo power amplifier
1 Full-range loudspeaker
1 Subwoofer loudspeaker
0
r
1
Mono amplifier
1
Full-range loudspeaker
1
Self-powered subwoofer
MULTIPLE INPUTS TO THE HTS5000
When multiple sources are to be decoded, i.e., a VTR,
video disc player, and broadcast tv as well as an audioonly cassette deck, it is most efficient to connect them
all to a single unit, such as an audio receiver, and to
connect that unit's stereo tape outputs to the
HTS5000
Left and Right inputs. (See Figure 1.)
HTS5000
OUTPUTS TAPE
AUDIO RECEIVER
0
UDIO
IN+
+;WEouT
LS
OUT
1-Q
Q
R
-0
------
0
AUDIO OUTPUTS
FIGURE
1
In this case, the stereo system's high fidelity
speakers can also serve as the Surround Sound
System's front left and right speakers. To accomplish
this, connect the
HTS5000 Front Left and Right outputs
back to the tape inputs on the high fidelity receiver (see
Figure
2.)
The HTS5000 Tape Send outputs and Return
inputs can be used in the place of the receiver's tape
outputs and inputs.
VCR
AUDIO OUTPUTS STEREO HI FI AND SURROUND SOUND
FRONT SPEAKERS
FIGURE
2
Or, a second audio source can be connected to the
HTS5000 Tape Return Left and Right inputs (see Figure
3).
In this case:
1. When the front panel Tape Mon switch is
out,
the
HTS5000 processes the inputs from L and R.
2.
When the front panel Tape Mon switch is
in,
the
HTS5000 processes the inputs from Tape Return
L
and R.
BACK
FRONT
OURCE
#2
SOURCE
#I
1
""1
SOURCE
DOLBY
I
STEREO
SOURCE
USING A SECOND SOURCE CONNECTED TO THE
TAPE RETURN INPUTS
FIGURE
3
LOCATING SPEAKERS
Speaker location will depend in each case on the size
and shape of the specific room in which the Home
Theater System is installed. The diagrams in Figure
4
may be used as a general guide to speaker placement in
rooms of various shapes. To avoid interference with the
tv picture, speakers without special magnetic shielding
should ordinarily be more than
0.6m
(2
ft) from the
screen. In each case, it is best to consult the tv and
loudspeaker manufacturers.
When a Center speaker is employed, it is most conven-
iently mounted above or below the screen, but always
as close to the screen centerline as possible.
Because very low frequencies are nondirectional in a
room, a subwoofer can usually be located almost
anywhere convenient in the room. However, depending
on room acoustics and the particular subwoofer, some
locations may be clearly superior to others. Consult the
subwoofer manufacturer for specifics.
.I
LO
nn.I
LOCATl NG SPEAKERS
FIGURE
4
CONNECTIONS
All connections (except the supplied wired Remote
Control) are made via phono pin plugs. Four pairs of interconnecting cables with plugs are supplied.
lnpuf~
(see Figure 5)
Connect the stereo preamp or Aux output of a video
disc player, video tape recorder, or tv receiver to the Left
and Right inputs of the
HTS5000. (See Figure 1 for multi-
ple sources.)
IMPORTANT
For optimum decoding of Dolby Surround program material, system equalization should be
done following the
HTS5000 outputs. If
equalization is used ahead of the
HTS5000, it
should be applied identically to both channels
and in moderate amounts.
DOLBY
1
STEREO
SOURCE
AUX
OUT
Outputs
For a basic system (see Figure
6):
A. Connect the HTS5000 Front Left and Right outputs
to the stereo inputs of an amplifier or receiver.
These inputs should accept Aux or preamp level
signals. The home stereo hi-fi receiver or amp is
often conveniently used for front left and right
signals (see Figure
1
also).
B. Connect the stereo speaker outputs of the front
amplifier to front left and right loudspeakers. These
can also see double duty as the hi-fi audio system
speakers (see Figure
2
also).
C. Connect the
HTS5000 Surround Left and Right out-
puts to the second stereo amplifier's Aux or preamp
SINGLE INPUT
FIGURE
5
level inputs.
D.
Connect the second amplifier's outputs to the surround left and right loudspeakers.
IMPORTANT
When setting up a basic system, make sure
that the
HTS5000 back panel Center switch is
in the Out position.
-1
SOURCE
1
AUX OUT
--
I
SWITCH "OUT"
i
\\
AMP
Y2
AMP
lll
FRONT
O-L-
iUX IN
LS
O-R-
SURROUND
LOUDSPEAKERS
FRONT
LOUDSPEAKERS
BASIC SYSTEM
FIGURE
6
For a complete system, make the following additions
(see Figure
7):
A. Connect the Center output on the HTS5000 to one
input of a third stereo amplifier.
IMPORTANT
Make sure that the back panel Center switch is in
the In position.
B. Connect the Center amplifier output to a full-range
loudspeaker.
C. Connect the
HTS5000 Subwoofer output to the
other stereo input of the third amplifier.*
D.
Connect the amplifier Subwoofer output to a subwoofer loudspeaker.
A
self-powered subwoofer can also be used. In this case, connect the
HTS5000
subwoofer output directly to the powered subwoofer input.
(Only a mono amp is required in this case for the center channel.)
CENTER
LOUDSPEAKER
-
SUBWOOFER
LOUDSPEAKER
-
'IN"
\
7
HTS5000
-
AMP
#1
FRONT
SURROUND FRONT
LOUDSPEAKERS LOUDSPEAKERS
COMPLETE SYSTEM
FIGURE
7
NOTE:
Select power amplifier
#3
to match the power
requirements of the particular subwoofer loudspeaker
used.
OPERATION
(Figure
8)
PUSHBUTTON CONTROLS
Dolby
SurroundlStereolMono
Depress one, or two, of the first three switches at the
left of the front panel, depending on the type of audio
source material.
@
Dolby Surround:
Depress this switch if the
source material is "Dolby Surround" or "Dolby
Stereo." The
HTS5000 will decode all ambience and
surround information and will process it for full surround sound.
NOTE:
Some video tapes and discs that are ac-
tually Dolby Surround encoded are not so labeled.
The only way to determine this is to try a source
with the Dolby Surround switch pressed in. Most
recently released stereo movies are
DolbySurround encoded. Additionally, for many viewers,
all types of program sources will sound acceptable if the
HTS5000 switch is left in the Dolby Sur-
round position.
@Stereo:
Depress this switch if the source
material is stereo
(e.g., music videos, records, or
compact discs). The
HTS5000 processor will
simulate surround sound with the Acoustic Space
Generator and true digital time delays. Outputs will
appear at Front Left and Right, Surround Left and
Right, and Subwoofer channels. There will be no output at the Center channel, and the Center switch has
no effect on the output.
C
Mono:
When the source is monophonic,
epress this switch. By means of its Acoustic Space
9
Generator and digital time delays, the HTS5000 will
provide simulated-stereo and -surround sound from
mono sources. When the Center switch is in the In
position, outputs will appear at all six channels.
When a center speaker is not used, make sure the
Center switch is in the Out position.
With a Center
speaker in the system, there will be very stable
center localization of dialogue; without a Center
speaker, dialogue will appear in a phantom center
channel. See the section on Mono Enhance Adjust to
set the amount of simulated surround with the
O~~it~h in Mono.
D Synthesized Surround Defeat:
Depress this
switch to bypass
HTS5000 processing when the Stereo
or Mono switch is also depressed. The output will then
be straight stereo or mono appearing in the Left and
Right or Center channels. The Subwoofer channel will
continue to function.
NOTE: If the Stereo button is depressed, the output
will appear only in the Front Left and Right channels.
If the Mono button is depressed and the Center
switch is in the In position, output will appear in the
Center channel only. If the Mono button is depressed
and the Center switch is in the Out position, output
will appear in the Front Left and Right channels only.
@Tape Monitor:
When this switch is
Out,
the
HTS5000 derives its source from the Left and Right input jacks. When this switch is
In,
the HTS5000 source
derives from the Tape Monitor Return Left and Right input jacks.
ROTARY CONTROLS
@
Input Level:
For the best signal-to-noise ratio and
input processing, set the lnput Level control as you
would set a
VU
meter. With the volume control set to a
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HTS5000 AND REMOTE CONTROL
FIGURE
8
low but audible position, adjust the control so that only
the loudest occasional peak signals light the red, but
most signals remain below the red.
Recommended initial setting: Straight up and down.
NOTE: In the future, consumer software may be
available with Dolby calibration tones. To calibrate
the HTS unit using these tones, put the
HTS5000 in
the stereo mode, and adjust the lnput Level control to
just light the last green LED on the input level
display.
G
lnput Balance:
To set the lnput Balance, use a
8
urce (like dialogue) that usually comes from the
center of the sound stage. Adjust the Balance control
so that its LED lights most often when center dialogue
is present. Rotate the control slightly left and right to
ensure that it is set at the optimum position.
Recommended initial setting: Straight up and down.
Digital Delay (ms):
To select and set the Digital
time, use the following formula (see Figure 9):
20
+Dl - D2 = DS
L
REMOTE CONTROL
'The Remote Control should be used because it per-
mits the listener to adjust the Surround Level and
overall Volume from the listening position to suit each
individual tape, disc, or broadcast. The Remote overrides the front panel Surround Level and Volume controls, but these should always be turned to their
minimum positions to prevent an unpleasant blast of
sound should the Remote be accidentally discon-
nected.
The Remote Control is also equipped with a Mute
slide switch for temporary reduction of sound level
when necessary. A red LED next to the switch glows to
indicate that the Mute is engaged; the light is ex-
tinguished when the Mute is off.
Recommended initial settings of Remote Surround
Level and Volume:
Same as Recommended Levels for
front panel Surround Level and Volume above.
Where
Dl = distance (in feet) from listener to
closest front loudspeaker
D2
=
distance (in feet) from listener to
closest rear loudspeaker
DS
=
Delay setting (in milliseconds)
Set the
HTS5000 Digital Delay to the closest delay setting (use the higher delay setting if between two delay
values). In some room arrangements, it may be difficult
to decide which listener and which speaker to use for
calculating distances. The guiding principle, where
there are multiple listeners, is that the shortest delay
heard by any listener should be 20 ms. So, for instance,
in installations where there are multiple rows of
listeners, calculate distances from the listener in the
back row who is closest to a rear speaker. The diagrams
in Figure 9 provide examples to clarify which listeners
and distances to use in calculating the optimum Digital
Delay setting in rooms of various shapes. (Other delay
times may be preferred by some listeners.) The final setting should cause the
rearmost listener to hear centerscreen speech coming from the front of the room. Never
from the rear.
Recommended initial setting:
20
ms
Q~urround Level and @volume:
Use these con-
rols to set a first approximation to the final listening
level desired. The Volume control adjusts the volume of
all (six, five, or four) output channels used. The Surround Level control adjusts the level of the rear channels, thus permitting the listener to achieve the desired
frontlrear balance in the sound field.
NOTE: Output trim controls are available underneath
the unit for cases where front and rear amplifiers
andlor speakers differ so much in power or efficiency
that the Volume and Surround Level controls do not
provide the desired relative levels. See the section on
Output Level Controls.
Recommended initial settings:
Start with the Surround
controls at higher levels than you might imagine
desirable; then back off until satisfactory levels are
reached. Starting at a low level and advancing the controls may lead the listener to stop adjustment before the
optimum ievel has been attained.
RRI
Dl AND D2 IN VARIOUS ROOM
CONFIGURATIONS
FIGURE
9
MONO ENHANCE ADJUST
A
screwdriver-adjustable trim control labeled MONO
ENHANCE ADJUST is provided on the bottom of the
HTS5000 (see Figure 10). When the Surround Sound
System is in the MONO Mode, this control permits the
listener to adjust the amount of stereo synthesis to in-
dividual taste. The control affects the
HTS5000 output
only when
the front panel MONO button is depressed
and the SYNTHESIZED SURROUND DEFEAT button is
out. (Turn clockwise to increase the amount of enhance-
ment.)
/
ADJUST
I
FIGURE
10
SYSTEM BALANCE
A.To balance a System with a Center amplifier and
speaker
1. Turn the Surround Level control and Volume control
all the way off.
2.
Set the Volume controls of the left-, center-, and
right-channel
power amplifiers
to maximum; set the
subwoofer and surround
power amplifier
volume con-
trols to minimum.
3.
Select a good quality mono program source; set the
HTS5000 pushbutton switch to Dolby Surround. Ad-
vance the HTS volume control to obtain a modest
listening level in the Center loudspeaker.
4.
Switch the HTS5000 to Stereo.
5. Listen carefully. Turn down the
power amplifier
volume control(s) for the louder source until switching between Dolby Surround and Stereo produces
the same level at a center listening position.
6.
If balance cannot be achieved with the power
amplifier volume controls, use the output level trim-
mers (six screwdriver-adjustable controls) located on
the bottom of the
HTS5000 (see Figure 11).
B.To balance a System without a Center channel
amplifier and speaker
1. Set the Volume controls of the left- and right-channel
power amplifiers
to maximum; set the subwoofer and
surround
power amplifier
volume controls to
minimum.
2
Select a good quality mono program source; set the
HTS5000 pushbutton switch to Dolby Surround.
3.
Listen for a center image. If necessary, reduce the
level of the louder amplifier until a center image is
obtained.
C.To balance the Surround and Subwoofer amplifiers
and speakers
1. Leave
power amplifier
volume controls as set above.
Select a program source with significant surround
channel program material as indicated by the front
panel graphic display. (Music portions of Dolby Surround movies often have suitable program material.)
2.
Advance the HTS5000 Surround Level control to the
middle of its range; advance the
HTS5000 Volume
control
ta a normal listening level.
3.
Depress the HTS5000 Dolby Surround pushbutton.
a. Advance the volume controls on the surround
channel
power amplifiers
until the surrounds have
about equal levels with the fronts.
NOTE: Use the trimmers on the bottom of the HTS
if the power amplifiers do not offer
suff~cient ad-
justment to balance.
b. Adjust the volume control on the subwoofer
power
amplifier
to give an appropriate, bigger than life
presentation.
IMPORTANT
All preamplifier, receiver, and power amplifier
volume controls are now set. Changing any of
these settings will change the balance of the
system rather than just the overall level. The
HTS5000 will henceforth control the output of the
entire system regardless of the program source.
bENTER SUB SLnnDUND FRONT
to
0)
to
0)
to
0)
WOOFER
L
R
L
R
FIGURE
11
PHASING
While making phase checks, various connec-
tions to power amplifiers will be changed. Be
sure to take necessary precautions when doing
so in order to protect all power amplifiers and
A. In order to obtain correct operation from an
HTS5000
Surround Sound System, all speakers and amplifiers
must be in phase. Check the phase as follows.
1. Use a mono input signal (an FM tuner set to Mono is
a convenient source).
2.
Set the HTS5000 front panel pushbutton to Stereo.
3.
Set the volume control for a moderate level.
4.
Listen to the sound. If the Front Left and Right
amplifiers and speakers are in phase, the sound will
be centered, and its quality will be good across the
audio spectrum. If they are out of phase, the sound
will have a diffuse and directionless quality, particularly noticeable in the almost total loss of low fre-
quencies (bass sounds).
5. To correct an out-of-phase condition in the Front, interchange the wires to one of the Front speakers,
either
at the amplifier output
or
at the speaker input
terminal.
B. Now turn down the sound, and check the phasing of
the Surround speakers using the following technique.
1. On the back of the HTS, temporarily unplug the Front
Left and Right output connectors.
2.
Plug the Surround Left and Right channel connectors
into the Front Left and Right output channels.
3.
Proceed as in steps 1. to 5. above.
4.
Return the Front Left and Right and the Surround
Left and Right connectors to their proper jacks.
C.
If a Center speaker is used, check its phasing as
follows.
1. Switch to the Dolby Stereo mode; move the rear
panel Center switch to the In position; and turn down
the Surround Level control to avoid confusion.
2.
Set the HTS5000 front panel pushbutton to Stereo;
and set the Volume control for a moderate level.
3.
On the back of the HTS, unplug the Right Front output connector.
4.
Plug the Center channel connector into the Right
Front output channel.
5. Listen to the sound. If the Center channel amplifier
and speaker are in phase with the front channel
amplifiers and speakers, the sound will be centered
and its quality will be good across the audio spectrum. If they are out of phase, the sound will have a
diffuse and directionless quality. If the Center
speaker is not like the Front Left and Right speakers,
the distinction may not be clearcut. In that case,
choose the connection that increases bass output.
6.
To correct an out-of-phase condition in the Center, interchange the wires to the Center speaker,
either
at
the amplifier output
or
at the speaker input terminal.
D.
If a subwoofer is used, check its phasing as follows.
1.
Connect the subwoofer; switch to the Mono mode
(front panel); and move the rear panel Center switch
to Out.
2.
Listen to music with very low frequencies, and try
both subwoofer speaker connections.
3.
Choose the one with more bass output.
4.
Return the Center switch to In if appropriate; depress
the appropriate mode pushbutton on the front.
THE EDUCATED EAR AND
THE GRAPHIC DISPLAY
The front panel graphic display shows the relative
levels of the decoded and processed output at the Front
and Surround channels in the Dolby Surround and Synthesized Surround modes*. The display is independent
of the Volume and Surround Level control settings. The
graphic display is used to check initial setup of the HTS
Surround Sound System; to confirm that left channel
outputs do appear at the left speaker for example. It
also validates the recording engineer's intentions on
the spatial location and intensity of various sounds.
In addition, listening and experimentation will
demonstrate the display's usefulness in educating the
ears to the appropriateness of Volume and Surround
Levels for various performances. For instance, if surround channel outputs are displayed quite brightly but
the aurally evident surround level is low, then the Surround Level control should be turned up in order to
achieve the effect intended by the filmmaker. Or, if
dialogue appears strongly centered on the display but
not to the ear, then the phasing of the front and center
speakers should be checked.
'In the bypass modes (Mono and Stereo Synthesized Surround Defeat),
the display should not be used as a guide to levels or locations.
PROGRAM MATERIAL
Dolby Surround
The Dolby Surround process is designed for use with
any two-channel medium. Any media (like laser discs,
VHS Hi Fi, Beta Hi Fi, stereo television broadcasts,
stereo satellite transmissions, and stereo cable channels) that preserve the information contained in the
original 35
mm stereo optical film soundtrack are
suitable for use with the
HTS5000 Surround Audio Pro-
cessor. The
HTS5000 will reproduce Dolby Surround
movies from any of these sources with all the excitement of the theater.
Films with Dolby Stereo soundtracks are identified in
the movie credits with the
logo00DOLBY STEREO. Recent releases of these movies in the consumer formats
are identified on the jacket with the logo
00
DOLBY
SURROUND. Earlier releases of Dolby Stereo movies
are identified either on the jacket with a statement that
the product has a matrixed surround soundtrack or in
the credits with the Dolby Stereo logo. If you check the
early releases in your collection, you may be surprised
at the amount of Dolby Surround program material you
already have.*
The future of Dolby Surround seems assured. Virtual-
ly all major motion pictures being produced today use
the Dolby Stereo process, which is also being used to
encode the latest music videos to add new dimension
and realism to the performances. Stereo broadcast
television dramas also benefit from the Dolby Stereo
process which stabilizes the dialogue image in the ma-
jority of viewing environments while maintaining the
audible panorama only Dolby Surround can provide.
Each of these new and exciting applications of the
Dolby Stereo process is suitable for use with the
HTS5000.
Stereo
The
HTS5000 uses the same Digital Delay and
Acoustic Space Generator necessary for Dolby Surround reproduction to add a new dimension to conventional stereo sound. By using the
HTS5000 in the Stereo
mode, the ambience recovered from a stereo recording
is conditioned and presented in the surround channels.
The effect is a re-creation of the excitement of being at
the performance. Stereo surround is obtained from
sources like stereo music videos, compact discs,
phonograph discs, audio cassettes and tape recordings. Although the amount of recovered ambience
varies from recording to recording, the Surround Level
control and the Digital Delay control can be adjusted to
bring a new realism to most stereo recordings.
Mono
The concept of stereo audio transfer is in its infancy
in the film and video industries. To date, the vast majority of film and television material produced has been
monophonic. In the Mono mode, with additional digital
processing of the audio material, the
HTS5000 increases the width and depth of monophonic motion pictures, television broadcasts, and music recordings.
*A
list of films released with Dolby Stereo soundtracks is enclosed.
TROUBLE SHOOTING GUIDE
SYMPTOM CAUSE
No sound, no LED'S No power
No sound, but
LED'S
operate normally
Weak sound
No surround
Improper directional
information
HTS5000 Tape Mon switch in incorrect position
Receiver or preamp Tape Monitor switch incorrectly set
Receiver or preamp input selector incorrectly set
HTS5000 source wiring faulty
HTS5000 Volume control set too low
Remote Control connection faulty
Remote Control Volume control set too low
Remote Control in Mute position
Pushbutton selector switches set incorrectly
No power to power amps
Power amp input selector incorrectly set
Receiver or preamp Tape Monitor switch incorrectly set
Receiver or preamp volume control set too low
Power amp Volume control set too low
Faulty output connections
HTS5000 Volume control set too low
Remote Control connection faulty
Remote Control Volume control set too low
Remote Control in Mute position
Receiver or preamp volume control set too low
Power amp Volume control set too low
Center channel switch
Speakers out of phase
Pushbutton selector switches set incorrectly
System incorrectly balanced
HTS5000 Surround control set too low
Remote Control connection incomplete
Remote Control Surround level control set too low
Receiver or preamp volume control set too low
Power amp Volume control set too low
No power to surround power amps
Surround power amp input selector improperly set
Synthesized Surround Defeat switch is depressed
Faulty output connections to surround amps
andlor speakers
Pushbutton selector switches
Surround level control too high or too low
Faulty Remote Control connection
Speakers out of phase
Center channel switch incorrectly set
System not properly balanced
Left and Right channels reversed
CURE
Check all power cords are plugged in; check power
switches controlling circuit are on
Check source is connected to L and
R inputs (Tape Mon
switch up) or to
HTS5000 Tape Return L and R inputs
(Tape Mon switch depressed)
Check manufacturer's instructions; move switch to
select
HTS5000 input
Check manufacturer's instructions; move switch to
select
HTS5000 input
Check connections and cables to
HTS5000 and to
receiver
Turn Volume control up
lnsert connector fully
Set Remote Volume higher
Turn Mute off
All buttons must not be pushed in; stereo and mono but-
tons must not both be pushed in; only one of the first
3
left side buttons should be pushed in
Check power connections; turn power switch on
Check power amp instructions
Check receiver or preamp instructions
Set Volume higher
Set Volume higher
Check that all connectors are fully inserted, all connec-
tions are securely made
Turn Volume control up
lnsert connector fully
Set Remote Volume higher
Turn Mute off
Set Volume higher
Set Volume higher
Switch must be In if Center speaker is connected;
switch must be Out if no Center speaker is in system
See Phasing section; check phasing of all speakers
All buttons must not be pushed in; stereo and mono but-
tons must not both be pushed in
See section on Output Level Controls
Turn Surround control up
lnsert connector fully
Set Remote Surround level higher
Set Volume higher
Set Volume higher
Check power connections and power switches
Check setting
Press Defeat switch to move to out position
Check connections
Check switch is appropriate for material
Experiment with other settings
Make sure plug is inserted fully
See Phasing section; check phasing of all speakers
Switch must be In if Center speaker is connectc
switch must be Out if no Center speaker is
in
system
See section on Output Level Controls
Check that Left and Right sources are correctly
connected to L and
R inputs
SPECIFICA TIONS
Frequency response
Front Left, Center, Right: 20 to 20,000
Hz
k0.5 dB
Subwoofer: -3 dB
@
80 Hz; 12 dBloctave low pass
Surround Left, Right: per Dolby Surround specifications (50 to 7,000
Hz,
-3 dB)
lnput sensitivity
0.18V (Input Level control at maximum)
1.8V (Input Level control at minimum)
(For red level indication in Dolby Surround mode,
one channel driven)
lnput clipping level
2.8V
Output clipping level
4.0V
lnput Balance control range
k9 dB
Output level trim adjustment range
20 dB
lnput impedance
50 kfl
Output impedance
5.5 kfl
Total harmonic distortion
(1
kHz,
1V
output)
Front Left, Center, Right:
less than
0.1%, Volume
control at maximum
Surround Left, Right: less than
0.3°/o,Volume control
at maximum, Surround Level control centered
Output noise, A-weighted
Front Left, Center, Right: -90 dBV, Volume control
centered; -80
dBV, Volume control at maximum
Surround Left, Right: -85
dBV, Volume and Sur-
round Level controls centered; -68
dBV Volume con-
trol at maximum, Surround Level control centered
Signal polarity
Non-inverting at all outputs
Operating modes
Dolby Surround, Stereo-Synthesized Surround, MonoSynthesized Surround, Stereo Bypass, Mono Bypass
Surround delay range
16 to 36 msec
Operating Voltage
120 Vac + lo%, 60 Hz, 36W
Temperature Range
Operating: -29 to 57OC (-20 to 135OF)
Storage:
-29 to
71°C (-20 to 160°F)
Dimensions
60 mm H x 427 mm W x 382 mm D
(2-318 in. x
16-13116 in. x 15-1132 in.)
Net Weight
HTS5000:
4.5 kg (9 lb 13 oz); Remote Control: 919 (3
oz)
Certifications
Listed by Underwriters Laboratories Inc.
IMPORTANT SAFETY
INSTRUCTIONS
1.
Read, Retain, Follow Instructions:
Before operating
the unit,
read
all safety and operating instructions.
For future reference,
retain
all safety and operating
instructions. To assure safe operation,
follow
all
safety and operating instructions.
2.
Heed Warnings:
Comply with all warnings on the
unit and in the instructions.
3.
Water and Moisture:
Do not use the unit near water,
for example, near a sink, in a wet basement, or near
a swimming pool or lawn sprinkler.
4.
Carts and Stands:
Any cart or stand should be tip-
proof and sturdy enough to support a static load
four times the weight of the unit.
5.
Wall or Ceiling Mount:
A wall or ceiling mount used
for the
HTS5000 or associated products (such as
loudspeakers) should be strong enough to support a
static load four times the actual weight of the
unit(s).
6.
Ventilation:
Do not place the HTS5000 near or over
a radiator or heat register.
7.
Power Supply:
Connect the HTS5000 only to a
power supply of 120
Vac, 60 Hz.
8.
Power-Cord Protection:
Route the power cord so
that it will not be walked on, crushed, or pinched by
items placed on or against it. Pay particular attention to the cord at the point of exit from the unit, and
to the plug.
9.
Cleaning:
Unplug the unit before cleaning it; use a
damp (not wet) cloth when necessary.
10.
Nonuse Periods:
Unplug the power cord from the
outlet when the unit will not be used for long periods
of time.
11.
Liquid Entry:
Take care not to spill liquids inside
the enclosure.
12.
Damage Requiring Service:
This unit is not userserviceable. Refer all servicing to qualified service
personnel. The unit should be serviced if:
A. The power-supply cord or the plug has been
damaged.
B. Liquid has been spilled into the unit.
C. The unit has been exposed to rain or water.
D. The unit has been dropped or the enclosure has
been damaged.
E.
The unit does not appear to operate normally or
exhibits a marked change in performance.
NOTE:
All
measurements with outputs loaded with
50
kQ
A
Product of the
ULTRA
Group
Copyright 1985, Shure Brothers Inc.
27A8102
(EK)
Patent Pending
Printed in U.S.A.
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