User manual ATLANTIC TECHNOLOGY SYSTEM 370 INSTRUCTION MANUAL

[. . . ] Here's why: 371 LR/373 C Front and Center Speakers s s s Wide horizontal dispersion improves coverage of the listening area. Focused vertical directivity improves frontal localization and intelligibility. Full dynamic range and frequency response 374 SR Surround Speakers s s s Diffuse radiation enhances envelopment and spaciousness. Smooth power response matches the tonal character of the front and center channels. [. . . ] Experiment to find where the speakers sound best in your particular room. Use the following placement guidelines and Figure 3 as a starting point. Remember that small changes in speaker positioning can make a big difference in the sound. 4 Models 371 LR, 373 C, and 374 SR Atlantic Technology® Mounting The Model 371 LR and Model 374 SR speakers can be mounted in a variety of ways: On the wall. To surface mount your speakers on the wall, we have provided two steel keyhole brackets already installed on the back panel of the cabinet. Simply place the large openings of the bracket over the heads of pan-head screws (securely screwed into wall studs or wall anchors), and slide the cabinet down onto the shaft of the screw. Ideally, the acoustic center of the speaker (the tweeter) should be within two feet of ear level when you are in a seated position. The pedestal stands are provided with complete instructions and all necessary hardware required for installation. These stands allow placement flexibility and a stable base for a variety of floor surfaces, including deep pile carpeting. The height of the pedestal stand is matched to the speaker for optimum performance. Positioning the Speakers Place the Model 371 LR Front Speakers to the left and right of the TV screen. All of the System 370 THX speakers, except for the 374 SR surround speakers, are magnetically shielded and will not interfere with the video image. The left front and right front speakers should be far enough apart that you get a good stereo image, but not so far apart that the sound seems distant and distracting. Avoid placing the speakers too close to a corner or too close to the TV, and try to maintain an equal distance from the screen on both sides. Figure 3: Typical arrangement for speakers in a THX home theater. For best results, place the surround speakers within the shaded areas. Note that the surround speakers are marked Left and Right. It is important that the speakers be placed correctly for proper imaging. Surround speaker should be no closer than 2' from the ceiling Left surround speaker Ear level Center channel should be within 2' of front speaker tweeter height Right surround speaker Null point of surround speaker in line with listening position 5 Models 371 LR, 373 C, and 374 SR Atlantic Technology® The degree of front speaker toe-in can affect the imaging and response characteristics of the speakers. In most rooms, the speakers will work well facing straight ahead or slightly toed-in towards the listener. Speakers that are placed close to the side walls may require additional toe-in to avoid a poor image and/or a forward midrange and treble response due to reflections from the side walls. Play some two channel stereo music and experiment with speaker positioning. Note: If the speakers need an excessive amount of toe-in to image properly, there may be a problem with the connection of the speakers or some part of the system may not be operating properly. Check all of your speaker wire connections for correct phase and verify that the associated components in the system are connected and functioning properly. The Model 373 C Center Channel Speaker should be centered between the left and right front speakers and above or below the TV screen. [. . . ] Avoid placing your speakers in direct sunlight or near a source of heat that may, over time, fade the finish. If you can do so, save the cartons, packing pieces, and plastic bags that came with your speakers. They will be useful in case you move or have to ship your loudspeakers for any reason. In any case, save all packing materials until you are certain that the systems have suffered no damage in shipment. [. . . ]