User manual SMART DEVICES MOD VI

[. . . ] 5945 Peachtree Corners East Norcross, GA 30071-1337 TABLE OF CONTENTS SECTION 1 SECTION 2 SECTION 3 INTRODUCTION FEATURES INSTALLATION - SYSTEM CONFIGURATION - WIRING HOOKUP INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 4 4 4 10 11 12 15 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] These signals do not pass through the Circle Surround matrix. The computer-type DB25 connector marked DIGITAL INTERFACE on the back of the processor is for an external digital decoder. SMART provides the proper cables for the different digital decoders available on the market. The DIGITAL INTERFACE DB25 pinouts: Pin 1 Left Pin 3 Center Pin 5 Right Pin 6 Left Surround Pin 7 Right Surround Pin 8 SubWoofer Pin 9 Mono Pin 10 Music Pin 11 Stereo A Pin 12 Digital Pin 13 Stereo SR Pin 14-25 Ground Another application of the DIGITAL INTERFACE terminals is for external sync sources. Sound-Interlock from a 35-mm reproducer or a single 16-mm projector may be fed into the DIGITAL INTERFACE and selected with the front panel DIGITAL format switch. DEFAULT OPTICAL SELECTION: External digital decoders available on the market have a function that instructs the processor to switch to an optical format in the event that the digital decoder fails or loses time code. When this happens, the digital decoder will pulse the appropriate terminal (MONO, STEREO A, STEREO SR, or MUSIC) to ground to alert the processor to switch to 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. 6 INSTALLATION & OPERATION Figure 5a. MOD VI DSP Matrix circuit board diagram (left). 7. Connect the OUTPUT terminals of the MOD VI to the inputs of the system amplifiers. The main OUTPUTS are labeled LEFT, CENTER, RIGHT, LEFT SURROUND, RIGHT SURROUND, SUB+ and SUB-. Shielded cable should be run between these terminals and the next piece of equipment in the sound system (equalizer, amplifer, etc. ). Convenient GROUND terminals are provided near the outputs. A balanced subwoofer output is available on the MOD VI to provide an easy means to mono bridge the sub amplifier. The subwoofer output may also be operated in an unbalanced configuration by connecting to the SUB+ terminal and GROUND. DIGITAL SMART PORT: The Digital Smart Port has been added to allow for an optional 1/3 octave equalizer replacement for the built-in octave equalization, in addition to other features. Six internal jumpers (H14, H17, H18, H19, H20, and H21) must be changed to bypass the octave equalizer and activate the Digital Smart Port. The Digital Smart Port pinouts are listed on the following page: 7 MOD VI STEREO PROCESSOR Figure 5b. MOD VI main circuit board diagram (left). Digital Smart Port Pinouts Pin 1 Pin 3 Pin 5 Pin 7 Pin 9 Pin 11 Pin 12 Pin 13 Pin 14 Subwoofer In Right Surround In Left Surround In Right In Center In Left In +15 VDC -15 VDC +5 VDC Pin 15 Pin 17 Pin 19 Pin 21 Pin 23 Pin 25 Pins 2, 4, 6, 8, 10, 16, 18, 20, 22, & 24 Subwoofer Out Right Surround Out Left Surround Out Right Out Center Out Left Out Ground 8 INSTALLATION & OPERATION Figure 5c. MOD VI main circuit board diagram (right). 9 MOD VI STEREO PROCESSOR SECTION 4 CALIBRATION Required Equipment · · · · · · · · sound pressure level meter real time analyzer (RTA) with a calibrated microphone dual trace oscilloscope multimeter a tuning wand S. M. P. T. E. If the MOD VI is mounted in a rack, make sure exhaust fan is running. [. . . ] The MOD VI is equipped with a power up muting circuit that allows time for the low level circuits to stabilize before enabling the processor outputs. This circuit prevents a "turn-on thump" from being passed to the auditorium speakers. However, since most amplifiers are not equipped with a comparable muting circut for the power down sequence, it is recommended that the amplifiers be turned off before the processor to avoid a "turn-off thump" in the auditorium. MUSIC SELECTION: It is likely that the sound system will be turned on before the arrival of the first audience of the day. [. . . ]