User manual ATLANTIC TECHNOLOGY SYSTEM 170 INSTRUCTION MANUAL

[. . . ] It includes a high frequency level control that allows it to be placed directly above or below the TV screen (which changes the sound) and still provide accurate reproduction. Since up to 85% of dialogue and 65% of special effects are reproduced through the center channel speaker, it's important that its sound be accurate and timbre-matched to the other speakers in the system. The rear-mounted High Freq control incorporated into the 173 C allows for this matching. The 173 C center speaker is intended to be placed in a horizontal position, as opposed to the vertical positioning intended for the 171 LR. [. . . ] It's to make you believe you are in the scene taking place on the screen. For a home theater system, place your Model 171 LR speakers on either side of the television. The three front channel speakers (171 LRs and 173 C) are magnetically shielded so they will not interfere with your television picture. The left 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 to come directly from the speakers, distracting you from the picture. If you are using a center channel speaker, a wider separation of the left and right front speakers is usually possible. You may choose to "toe" the LR speakers in, aiming them at the prime listening position. This can be particularly useful if the front LR speakers are fairly far apart. The Model 173 C should be directly above or below your television. It's important the speaker is centered on the screen, not off to the side. The foot cutouts on the speaker base should be facing forward. Pivot the speaker up or down on its base so that it points directly at the listening position. 4 Atlantic Technology® Figure 3: Typical arrangement for speakers in a home theater. For best results, place the surround speakers within the shaded area. 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 Right surround speaker Center channel should be within 2' of front speaker tweeter height Null point of surround speaker in line with listening position Operation of the HI FREQ LEVEL Control The HI FREQ LEVEL control works like a treble tone control, giving you more or less high frequency output from the speaker. You can compensate for overly bright soundtracks or "punch up" a dull soundtrack. Turning this control clockwise increases the high frequency level; turning it counterclockwise reduces it. The HI FREQ LEVEL control also allows you to adjust the overall sonic balance of the 173 C to more closely match the LR speakers even though the 173 C is placed directly above or below the TV screen. It may be best to use the test tone built into your receiver to adjust the overall sound of the 173 C to match the LRs once the speakers are placed in their proper locations. Note: Some surround sound decoders and receivers offer a choice of "Normal" or "Wide-band" modes for the center channel. The Model 173 C was designed to be used in the Normal mode. Additionally, some discrete digital home theater systems allow Bass Management, letting you select between "Small" and "Large" speakers system-wide. [. . . ] Re-attach them by lining up the holes on the grilles with the pegs on the baffles and pushing firmly but carefully. Avoid placing your speakers in direct sunlight or near a source of heat that may, over time, damage 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. [. . . ]