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MOD 7a STEREO PROCESSOR

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The MOD 7a Cinema Stereo Processor is an inexpensive, full-featured product which allows any theatre to provide

the best presentation to its customers. Whether as an upgrade or in new installations, the MOD 7a offers features,

ease of use,  and pricing that are sure to please anyone.

The MOD 7a  is the only cinema processor to incorporate the patented Circle Surround® matrix. Circle Surround

produces 5 channels of audio from a standard optical stereo soundtrack.  This means you can have split surround

optical sound presentations in auditoriums that are equipped for split surround operation. In addition, a sub-bass

channel is derived from the optical soundtrack.

Digital soundtracks may be processed in six channel mode which includes split surrounds and subwoofer. In

addition, the MOD 7a will process the surround ex channel.  You do not have to add an external ex channel proces-

sor. This saves rack space and money. EX mode may be set to come on or off at power up, and it can be switched

on and off easily with a front panel pushbutton.

The MOD 7a also processes the overhead channel. This is a unique feature of the MOD 7 which is not found in any

other processor . Be ready when this new channel starts appearing in feature films.

The MOD 7a is fully compatible with both standard solar cell and red LED reverse scan soundheads. The preamps

can be configured easily for optimum results with either type of soundhead. The Projector 2 preamp can be setup

for use with a DVD, LaserDisc, or VCR player to process the audio channels into a multi-channel presentation.

To achieve the best from your new MOD 7a 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 truly exceptional sound quality.

INTRODUCTION

Summary of Contents for MOD7a

Page 1: ...OD7a Seven Channel Plus Overhead Channel Cinema Stereo Processor With Circle Surround Analog Matrix Seven channel stereo processor plus overhead channel Digital EX format included Easy interface to di...

Page 2: ...fective 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...

Page 3: ...p matrix 8 Time Delay Setup 9 INSTALLATION 10 Processor Placement 10 Power Supply Connections 10 Backup Power Supply 10 Soundhead Connections 10 Solar Cell 10 Reverse Scan 10 Two Projector Systems 11...

Page 4: ...have to add an external ex channel proces sor This saves rack space and money EX mode may be set to come on or off at power up and it can be switched on and off easily with a front panel pushbutton Th...

Page 5: ...surround and subwoofer channels from an external digital decoder Music Inputs The MOD 7a processes both stereo and mono music sources from tape CD or cartridge players The music is processed through...

Page 6: ...aserDisc VCR Factory setting Preamp Configuration The MOD 7a preamps can be configured through the use of shunts placed on header pins The drawing below shows the shunt locations and the purpose of ea...

Page 7: ...d CS channel Factory setting or an overhead OS chan nel Overhead Channel Configuration The MOD 7a can be configured to deliver an overhead channel from digital soundtracks If you are using a digital p...

Page 8: ...ors The STATUS LEDs indicate some of the operating condi tions of the matrix The RUN LED blinks once per second if the microcontroller is operating properly If it is not blinking then press the RESET...

Page 9: ...t the time delay as you would for any stereo processor Time Delay Setup The rotary switch is for setting the Surround Delay Time The switch is labeled as shown in this drawing POSITION DELAY in mSec 0...

Page 10: ...ripe 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 Soundhead Connections Solar Cell Using th...

Page 11: ...e toggled input TWO PROJECTOR SYSTEMS NO AUTOMATION Rig a single pole single throw switch between the CHANGEOVER terminal and a GROUND terminal When the switch is open Projector 1 will be active when...

Page 12: ...the optical format The information pertaining to which format to default to is encoded in the digital soundtracks on DTS prints On Dolby Digital the default is SR Monitor Interface The MONITOR INTERFA...

Page 13: ...connectors TPG GROUND is located to the left of J1 also on the bottom side Turn Gain controls fully clockwise Turn Slit Loss controls fully counterclockwise The Preamp Gain controls are R1 and L1 for...

Page 14: ...PREAMP for optimum flat high frequency response Do not over adjust the slit loss correction in an effort to obtain extended response This will result in an undesir able frequency response peak While a...

Page 15: ...qualization and House Levels The equalizers are normally shipped with the individual trimpots set for a flat frequency response The octave equalizers used for the stage channels are capable of cutting...

Page 16: ...impact playback in the auditorium for pre show entertainment Although all 2 channel commercial stereo recordings contain hidden extra channel information due to multiple microphone record ing or mult...

Page 17: ...impot is located on the back panel by the power connector This will only need adjustment if you are employing overhead speakers and amplifier The Hearing Impaired level and Backup Level adjustments ar...

Page 18: ...R control is used to set the system level for any format The system was calibrated with the FADER at the one o clock position which is where most prints will play at a normal level MUSIC LEVEL CONTROL...

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