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Mod VI Manual Copyright 1997 by SMART Devices, Inc.
5945 Peachtree Corners East
Norcross, GA 30071-1337
T
ABLE
O
F
C
ONTENTS
SECTION 1
INTRODUCTION
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2
SECTION 2
FEATURES
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3
SECTION 3
INSTALLATION
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4
- SYSTEM CONFIGURATION
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4
- WIRING HOOKUP INSTRUCTIONS
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4
SECTION 4
CALIBRATION
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10
- A CHAIN CALIBRATION
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11
- B CHAIN CALIBRATION
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12
SECTION 5
OPERATION INSTRUCTIONS
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15
SECTION 6
SCHEMATICS
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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 thor-
oughly 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 Technical 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 attribut-
able 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 dealers 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
2
The MOD VI Cinema Stereo Processor is the first and only processor to incorporate the patented Circle Surround
ä
technol-
ogy, 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.
To 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.
SECTION 1
INTRODUCTION
Using This Manual
WARNING! 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 SMART product.
This Text Style indicates the most important primary setup, calibration and
operation instructions.
This Text Style indicates additional notes and information.
For quick reference, this manual has included several icons to alert the reader to special content. INSTALLATION & OPERATION
3
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 pro-
duces highly accurate decoding of the optical stereo or SR
soundtrack.
SRS 3-D Sound Enhancement.
The patented SRS enhance-
ment 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 FADER 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 potenti-
ometers 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 LEDs 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 automa-
tion 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 projec-
tors. 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 VCRs 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 hig