User manual SMART DEVICES SMP 430

[. . . ] 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 thorization) will be refused. Page 4 SMP 430 OPERATION AND INSTALLATION MANUAL INTRODUCTION The SMART Center Surround 3X processor enhances the presentation of Digital Soundtracks by providing Left Rear and Right Rear Surround channels in addition to the normal Left Wall Surround and Right Wall Surround channels. [. . . ] This gives the illusion of distance which can contribute to the overhead effect. Alternatively, mid-size full range off-stage effects speakers could be placed on the side walls, angled into the audience, between the screen and the surrounds so that voices or effects could be placed offstage. This all leads to a greater sense of reality in the audio presentation. These off-stage channels would have to be encoded on the soundtracks. Rear Wall Speakers digital recording is a fine storage media, at some point the digital signals have to be converted back to analog to be heard. A properly designed matrix is not going to significantly affect the quality of the resulting analog signals. The Center Surround 3X processor is a multi-channel matrix decoder that extracts the multiple channels from the Digital Left Surround and Digital Right Surround tracks and sends these signals on to the appropriate power amplifiers and speakers. By separating the surround speakers on the back wall of the cinema into a separate group, these speakers can deliver sounds from the rear wall channel which are separate from the left wall and right wall channels. Page 6 INSTALLATION AND OPERATION INSTALLATION Find an appropriate place in the rack to mount the CS-3X. A good place is between the stereo processor and the power amps since the wiring will follow this path. Since the CS-3X is only one rack space high, often you can just use it to replace a vent or blank panel. This may be important if space is at a premium. If you are retrofitting an existing installation, you must also provide a place in the sound rack to mount another power amplifier for the required additional amplification channel(s) for the rear surround speakers. The Right Surround signal appears in the Right Wall speakers AND in the right rear wall speakers. This mode more accurately maintains the channel separation when the system is not in 3X format. AUTOMATION HOOKUP Wire the format terminals to the similar format terminals on your stereo processor. This will allow the automation to control the format switching. The format terminals have internal protection diodes to allow systems with pullup voltages higher than +5VDC to be safely connected to the CS-3X processor. See the hookup diagrams on Page 9 for wiring information. CAUTION: When connecting the CS-3X to a Dolby CP500, the CAT 684 board must be Rev 1 or higher. Also, the CP500 must have software version 1. 51 or higher installed. WARNING: If you do not make the proper connections to the format terminals, the CS-3X will NOT go into the proper format for digital soundtracks, and you will NOT get the full benefit of the product. Page 7 SMP 430 SETUP Adjusting the CS-3X is a straightforward procedure. It consists of setting levels and adjusting equalization. A Real Time Analyzer is required to do EQ. A Sound Pressure Level meter is required to set levels. [. . . ] If there is a problem with the CS-3X such as distortion, noise, a dead channel, or some other problem, then the operator can simply press the POWER/BYPASS switch to the BYPASS position. In the BYPASS mode, the Left Surround and Right Surround signals are fed straight through relay contacts and on to the amplifiers. In addition, the Rear Wall channels are fed signals from the Left Surround and Right Surround Signals. If the power supply in the CS-3X should fail completely, the unit will automatically go into BYPASS mode. [. . . ]