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Copyright 1995 by SMART Devices Inc.

5945 Peachtree Corners East 

Norcross, GA 30071-1337

Table of Contents

SECTION 1

INTRODUCTION ..............................................................2

SECTION 2

FEATURES.......................................................................2

SECTION 3

CARD DESCRIPTION ......................................................3

SECTION 4

INSTALLATION.................................................................8

WIRING HOOKUP INSTRUCTIONS

.................................8

SECTION 5

CALIBRATION ..................................................................10

- A CHAIN CALIBRATION

.................................................10

- B CHAIN CALIBRATION

.................................................12

SECTION 6

OPERATING INSTRUCTIONS.........................................14

SECTION 7

SCHEMATICS ..................................................................15

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 freight 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 does 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 authorization 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 purchases
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.

SMART products are designed to deliver unsurpassed quality in workmanship and perfor-
mance.  The following information gives detailed instructions on the installation and opera-
tion of the SMART MODIIC processor.  We strongly encourage new owners of the MODIIC
to thoroughly read this entire manual before placing their new SMART product into service.
This will ensure that the MODIIC 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., Mon.-Fri.

1-800-45-SMART

Summary of Contents for MOD IIC

Page 1: ...esulting 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 authorization MUST be obtained before returning any product A 15 restocking charge will be issued on ...

Page 2: ...s will allow you to offer a system that has a sound quality second to none SECTION 2 FEATURES FADER CONTROL To begin the MODIIC has one STEREO MASTER FADER that controls the overall playback level for all six channels This master fader is used as the volume control for all formats except music mode The master music level control is located behind the front panel on the Format Card FORMAT SWITCHING...

Page 3: ...event power sag momentary drop of the supply output due to heavy loads This gives excellent transient response and superior stability EMERGENCY SOUND BACKUP POWER SUPPLY A backup power supply is included with the MODIIC to power the backup preamp built into the MODIIC This will ensure that you will never lose a show when using the MODIIC processor The backup supply is located within the main power...

Page 4: ...ure is activated the button will remain lit all the time but the 3 D action is only used in Mono mode and only if the optional 3 D Mono card has been installed Without the optional 3 D Mono card the 3 D button has no effect in Mono mode In Stereo Digital and Music modes the 3 D action is not part of the signal process ing DUAL PROJECTOR PREAMP CARD MOD4x300 There are two stereo solar cell preampli...

Page 5: ...e Both the Mono and 3 D Mono lights will be lit when this feature is active The 3 D Mono Backup card also contains the circuitry for the emergency backup system METER CARD MOD2x335 The two LED arrays on this card are used to monitor the levels of various points in the cir cuitry These are used during cali bration for setting preamp levels and also during normal operation for monitoring other level...

Page 6: ...without disturbing the input signal calibration settings of the preamplifier and noise reduction circuits OPTIONAL 1 3 OCTAVE EQUALIZER CARDS MOD4x320 Three one third octave room tuning equalizers can be specially ordered or added later for the front stage speakers Left Center and Right Each adjustable frequency band in the stage EQs may be cut or boost 10 dB A 6 dB gain adjustment is also on each...

Page 7: ...ximum setting of 160 milliseconds position F OUTPUT MUSIC CARD SRS5x330 Six channels of audio Left Center Right Left Surround Right Surround and Sub pass through the MASTER VCA Voltage Controlled Amplifiers locat ed on the Output Music Card The digital inputs also allow for separate Left Surround and Right Surround channels in addition to a separate subwoofer input The VCAs exhibit very close trac...

Page 8: ...should be connected to the NEUTRAL projec tor 1 input terminal 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 MODIIC 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 ...

Page 9: ...marked DIGITAL INPUTS that can be used to process the outputs from an external digital decoder i e DTS Dolby Digital The DIGITAL INPUTS accept any high level multi channel source The audio signals are processed through the individ ual equalizers Output Card and Master VCA circuit before they appear at the Main Outputs These signals do not pass through the Matrix or Time Delay circuits See the REAR...

Page 10: ...he right hand side of the Format Card labeled REMOTE LOCAL allows the operator to select either local or remote volume control of the MODIIC This switch is easily accessible by removing the four thumb screws that attach the front plate to the MODIIC Note Remote operation is for film formats only and will not affect the music level SECTION 5 CALIBRATION For more detailed information about setting u...

Page 11: ...window for the light to pass through 6 Check the high frequency output on both channels Make sure the response is the same on both channels With a narrow slit optical lens the response should be flat within 3 dB to about 12 kHz with NO slit loss correction If not this MUST be corrected before pro ceeding with the next steps It is not permissible to use slit loss correction to correct poor high fre...

Page 12: ... of the optical sound lens This is a very critical soundhead adjustment if you expect to get the best performance BYPASS Run a film soundtrack Listen to the CENTER channel on the booth monitor Switch from Normal to Backup the switch on the Format Card and adjust the backup level pot on the Mono Card to achieve equal levels while switching from Normal mode to Backup mode This completes the A Chain ...

Page 13: ...ls Left Center Right Left Surround Right Surround If more gain is needed then the gain pot on the stage EQs can be used which gives an addi tional 6 dB of gain However do not boost the gain on the EQ cards unless it is absolutely necessary The optional 1 3 octave stage channel equalizers in the MODIIC allow the same tuning results obtained in professional room tuning filter sets used in high end s...

Page 14: ...o the stage speakers Now measure the dis tance from the ideal seat to the nearest surround speaker Subtract the two measurements Now add 20 to this number to get the delay in milliseconds required in the auditorium Set the rotary switch to the nearest setting in milliseconds DIGITAL LEVEL SETTINGS Incoming signals feeding the DIGITAL INPUT termi nals MUST be trimmed externally to match levels from...

Page 15: ...e lower right side of the Format Card The four screws holding the front panel of the MODIIC must be removed to access the MUSIC LEVEL control EMERGENCY BYPASS SWITCH The MODIIC contains a backup system that will keep the show sound on the screen in the event of a failure of the processor This special circuitry is located on the Mono card in the main card cage unit and is activated by the NORMAL BA...

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