Smart MOD VI User Manual
Copyright 1997 by SMART Devices, Inc.
5945 Peachtree Corners East
Norcross, GA 30071-1337
TABLE OF CONTENTS
SECTION 1 INTRODUCTION ..................................................... 2
SECTION 2 FEATURES ..................................................... 3
SECTION 3 INST ALLATION ..................................................... 4
- SYSTEM CONFIGURA TION .....................................................
- WIRING HOOKUP INSTRUCTIONS
..................................................... 4
4
SECTION 4 CALIBRA TION ..................................................... 10
- A CHAIN CALIBRA TION
- B CHAIN CALIBRA TION
..................................................... 11
..................................................... 12
SECTION 5 OPERA TION INSTRUCTIONS ..................................................... 15
SECTION 6 SCHEMA TICS ..................................................... 15
SMART products are designed to deliver unsurpassed quality in workmanship and performance.
The following information gives detailed instructions on the installation and operation of the
SMART MOD VI stereo processor . We strongly encourage new owners of the MOD VI to thoroughly read this entire manual before placing their new SMART products into service. This will
ensure that the MOD VI will be operated properly to give the superior performance that it was
designed to deliver.
For service or installation assistance, please call our T echnical Support Department between the
hours of 8 a.m.-5 p.m. E.S.T ., Monday - Friday
1-800-45-SMART
LIMITED WARRANTY: SMART products and accessories are warranted against malfunction or failure due to defects in workmanship or
materials for a period of one year from the date of shipment. If a problem occurs during the warranty period, the unit will be repaired, or
replaced at our option, without charge for materials or labor. If air frieght is requested by the dealer, the difference between air and
surface charges will be billed to the dealer. This limited warranty does not cover products that have been abused, altered, modified, or
operated in other than specified conditions. Prior factory approval is required on all returns. Returned equipment or defective parts must
be shipped freight prepaid to us by the dealer or customer.
Our limited warranty doesn not cover damages resulting from accident, misuse or abuse, lack of responsible care, or failures not attributable to manufacturing defects, except as provided herein. SMART Devices, Inc. makes no warranties, express or implied, including
warranties of merchantability or fitness for a particular purpose.
RETURN POLICY: Factory autorization MUST be obtained before returning any product. A 15% restocking charge will be issued on unused
equipment (in original box) that is returned for credit. Credit is issued to the dealer’s account. The credit may be used against future
pruchases and no cash transactions are offered. All returns must be shipped freight prepaid by the dealer. Equipment returned without a
factory RA (Return Authorization) will be refused.
SRS is a registered trademark of SRS Labs, Santa Ana, CA.
Circle Surround is a registered trademark of Rocktron Corp., Rochester Hills, MI.
MOD VI STEREO PROCESSOR
SECTION 1
INTRODUCTION
The MOD VI Cinema Stereo Processor is the first and only processor to incorporate the patented Circle Surroundä technology, the latest innovation in optical stereo soundtrack reproduction. Circle Surround produces 6 channels of audio from a
standard optical stereo soundtrack by sensing the slight phase bias on the surround channel when digital masters are mixed
down to 4-channel optical tracks. This means you can have split surround optical sound presentations in auditoriums that are
equipped for split surround operation.
In addition, the MOD VI utilizes the SRS 3-D sound enhancement system, which brings out sounds that may have been
previously hidden by other processors. The MOD VI is the first processor to have both optical and digital tracks benefit from
the SRS circuitry to produce fuller, wider and more transparent sound and eliminate the auditorium “sweet spot.” This ensures
that the audience will have a full stereo perspective in every seat in the auditorium.
Digital soundtracks may be processed in six channel mode which includes split surrounds and subwoofer.
T o achieve optimum results from your new MOD VI Cinema Stereo Processor, the theatre engineer installing the system
should be totally familiar with all features and adjustments. Careful attention to detail and familiarity with the installation
instructions will allow you to offer a system that has a sound quality second to none.
Using This Manual
For quick reference, this manual has included several icons to alert the reader to special content.
W ARNING! Indicates procedures that may warrant extra attention to avoid component fatality .
DOUBLE CHECK! Indicates tips on avoiding common errors in installation or operation.
SHAMELESS PLUG! Indicates a mention of another quality SMAR T product.
This Text Style indicates the most important primary setup, calibration and
operation instructions.
This T ext Style indicates additional notes and information.
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SECTION 2
FEATURES
INSTALLATION & OPERATION
Circle Surround DSP Matrix. The patented Circle Surround
produces 6 channels of audio from a standard optical stereo
soundtrack. It does this by sensing the slight phase bias on
the surround channel when digital masters are mixed down to
4-channel optical tracks. This means you can have split
surround optical sound presentations in auditoriums that are
equipped for split surround operation. SMART is the first
manufacturer to introduce this technology into professional
cinema applications. The DSP matrix in the MOD VI produces highly accurate decoding of the optical stereo or SR
soundtrack.
SRS 3-D Sound Enhancement. The patented SRS enhancement is a standard feature of the new MOD VI. No longer an
expensive option, this process can be turned on or off from a
front panel operator switch or by automation. The MOD VI is
the first processor to be able to use SRS on optical stereo
tracks and digital soundtracks. This process is not active in
theaters using Front Surround Mode.
Fader Control/Remote Equalization Settings. The MOD VI
has one master F ADER that controls the overall playback
level for all six channels. This master fader is used as the
volume control for all formats. The individual left and right
master music level controls are located to the front right of
the main circuit board (MR and ML). The octave equalization
settings (7 bands plus bass and treble) are set with potentiometers on the front PCB panel, so re-equalizing the MOD VI
will not be necessary in the event of a main circuit board
replacement.
Format Switching. The formats available on the MOD VI are
Mono, Stereo A, Stereo SR, SRS On/Off, Digital and Music.
All formats may be manually controlled by the gray
pushbuttons on the front panel. Red Light Emitting Diodes
mounted in the front pushbuttons indicate the selected
format. The indicator LED’s are visible from a distance so it is
not necessary to be near the processor to verify the status.
Format switching is also possible by connecting an automation or remote switch contacts to the AUTOMATION
terminals on the back of the MOD VI.
Solar Cell/Reverse Scan Inputs. The MOD VI has stereo
solar cell inputs with electronic changeover for two projectors. Each pair of stereo cell inputs is an electronically
balanced circuit that helps to reduce any interference pickup
on the solar cell leads. Separate “neutral” leads for right and
left channels allow for Reverse Scan wiring.
Digital Inputs. The MOD VI is fully compatible with popular
digital formats (i.e. DTS, Dolby Digital, etc.). The MOD VI
will easily handle the stage, split surround, and subwoofer
channels from an external digital decoder.
Music Inputs. The MOD VI is designed to process both
stereo and mono music sources from tape, CD or cartridge
players. The music is processed through the Circle Surround
matrix to produce 6 channels of sound from a stereo music
source. In addition, these inputs may be used as an A/V
input for use with VCR’s or laserdisc players. The music
inputs are run through the Circle Surround matrix.
Surround Channel Time Delay . The MOD VI has a digital
time delay circuit for the surround channel while playing
optical stereo prints. Time delay of the surround channel in
optical stereo mode is necessary for two reasons: 1) to mask
any front to surround crosstalk and, 2) to synchronize the
stage and surround channels to eliminate echo caused by
different sound path lengths from the stage and surround
speakers.
Main Outputs. The MOD VI has six output channels: LEFT,
CENTER, RIGHT , LEFT SURROUND, RIGHT SURROUND
and SUB(woofer). The SUB outputs are balanced with SUB+
and SUB- terminals available. This allows a standard dual
channel amplifier to be used in mono bridged mode to feed a
subwoofer speaker.
Main Power Supply. A fully-regulated switching power
supply is furnished with the MOD VI processor. This supply
is heavily filtered and supplies ample current for both the
positive and negative 15 VDC supplies, as well as the logic
level 5 VDC supply . This external power supply minimizes the
chances of hum pickup when high gain electronic circuits are
placed in the same chassis as a power supply.
Emergency Sound Backup Power Supply. A 120V backup
power supply is included with the MOD VI to power the
backup preamp built into the MOD VI. This will ensure that
you will never lose a show when using the MOD VI processor. The 120V backup supply delivers about 12 VDC at
100mA. For installations where 120V is not available, the user
should supply their own power supply. The output should
be 12VDC @ 100mA and be relatively ripple free. The bypass
capability is a standard feature on the MOD VI and is not an
extra cost option as it is on other systems. MONO BYP ASS
supplies sound to the Center Channel only.
Digital Smart Port. The Digital Smart Port allows for future
upgrades in the MOD VI, including digital 1/3 octave
equalization and Afterburner effects, as well as an alternative
port for monitor signals.
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MOD VI STEREO PROCESSOR
INSTALLATION INSTRUCTIONS
SYSTEM CONFIGURATION
T o configure the system type, open the MOD VI
front panel and remove the PCB stops (The
white vertical card guides on either side). Slide
out the main PCB and remove it from the
cabinet. (All rear plugs must be removed).
Six Channel Circle Surround. Jumper across
H2, pins 1 and 2. (factory preset)
SECTION 3
Front Surround Mode. Place a jumper on H2,
pins 2 and 3. Note: SRS mode is not active in Front Surround
mode, since SRS only affects Left and Right channels.
H2 is located towards the back of the MOD VI main board,
Figure 1. Enlargement of the H2 area of the Main circuit
board. (Matrix board not shown).
near the rear left corner of the Circle Surround matrix board.
(see Figure 1.)
PROCESSOR PLACEMENT IN THE RACK
Mounting. Before mounting the MOD VI processor in the
equipment rack or projector console, be sure to select a well
ventilated area that allows cool air to circulate around the
individual components. In SMART prewired rack systems,
the Power Supply (PS-2) is mounted on the floor of the rack,
and the rack-mounted processor is placed at eye level for
easy visibility of the system operation status.
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Figure 2. MOD VI rear panel (left).
WIRING HOOKUP INSTRUCTIONS
1. Connect Power Supply (PS-2) to the MOD
VI rear panel.
The PS-2 is a cool-running, universal switching power
supply that operates on 100-250 VAC (50-60Hz), needing only
a change in plug to operate in any country . It delivers clean
+15, -15 and +5 DC voltages to the MOD VI and has enough
extra power to run companion products. When installing,
make sure that the processor is not immediately adjacent to
hum producing components. Run the factory supplied
power supply wiring harness along the left side of the
equipment cabinet (when viewed from the rear) to the MOD
VI processor. Dress the wires for appearance and craftsmanship. The wiring harness has a 6 position Phoenix connector
that plugs into the leftmost socket on the rear of the MOD
VI, labeled POWER (see Figure 2).
W ARNING: Do NOT plug a “live” power supply
into the back of the MOD VI processor! Make
sure that the power supply is DISCONNECTED
from the power mains before connecting to the
MOD VI. Failure to heed this warning can cause fatal
damage to internal components and void the manufacturer’s
warranty .
The wire codes for the main Power Supply are as follows
(from left to right on the back of the MOD VI):
Red : +15 VDC
Black : GROUND
White : -15 VDC
Brown : +5 VDC
Backup Power Supply. The emergency power supply is a 12
VDC, 100mA supply that is furnished only on 120VAC
models. It comes from the factory connected to the 6
INSTALLATION & OPERATION
position Phoenix connector when shipped to North American
customers. Other customers in other countries will need to
provide their own 12 VDC, 100mA backup supply .
The wire codes for the Backup Power Supply are as follows
(from left to right on the back of the MOD VI):
Black w/ white stripe : +BACKUP
Black : GROUND
Remember to check all connections before applying
power to the system. A wire that is reversed could
be very destructive to the system.
2. Connect Solar Cell or Reverse Scan
soundhead to SOUNDHEAD port.
Solar Cell. Using three-conductor shielded cable, connect
the wire from the left solar cell (red) to the corresponding
+LEFT1 input terminal of the MOD VI SOUNDHEAD
connector. Connect the wire from the right solar cell (green)
to the +RIGHT1 input terminal. The common solar cell lead
(black) should be connected to both –LEFT1 and –RIGHT1,
and the shield of the cables should be connected to a
GROUND terminal. Be sure to cut off the shield at the
projector end so that a ground loop is not created. Only the
shields on the MOD VI end of the cable should be grounded.
It is good practice to tape or shrink wrap the end of the
shielded cable at the sound head to prevent any stray shield
wires from grounding out to the sound head case.
Reverse Scan. If you are using a Reverse Scan system, use a
two-conductor shielded cable to connect the -LEFT1 and
+LEFT1 terminals on the MOD VI to the corresponding
terminals on the Reverse Scan terminal block. Connect
another two-conductor cable likewise from the -RIGHT1 and
+RIGHT1 terminals to the corresponding terminals on the
Reverse Scan terminal block. The “neutral” wires (-LEFT1
and -RIGHT1) should not be tied together.
If you have a second projector, repeat the above steps except
hook your solar cell wires to the -RIGHT2, +RIGHT2, -LEFT2
and +LEFT2 inputs.
DOUBLE CHECK your work to see that the solar
cell leads arrive at the proper terminals. A reversal
of leads will cause very strange results. You may
hear the center channel information through the surround
speakers, the surround through the stage, and the left
channel out of phase with the right. This is a common error,
so verify correct wiring before proceeding.
Figure 3. Connecting the MOD VI to a Reverse
Scan soundhead.
Figure 4. MOD VI Rear Panel (right).
3. FOR TWO PROJECTOR SYSTEMS: Connect
XOVER and ground terminals on MOD VI
AUTOMATION port to the automation
changeover relay terminals.
Projector changeover is accomplished by using only a single
pair of wires and either a manual switch or relay contacts in
the automation system. A relay closure in the automation
equipment will execute a changeover by grounding the
XOVER terminal. Run a two-conductor shielded cable to the
“dry” contacts of the automation projector changeover relay.
On the other end, connect one wire to the XOVER terminal on
the MOD VI. Ground the other
wire to the nearest ground
terminal on the MOD VI.
Connect the shield of the wire,
on the MOD VI end, to a ground
terminal. Cut off the shield on
the automation end. When the
automation relay closes,
Projector T wo of the MOD VI
will be “enabled,” and the first
pair of stereo preamplifiers
(Projector One) will be “disabled.” Releasing the relay will
cause the reverse action to
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