Surround Effects

Atlantic Technology®

Figure 3: Typical arrange- ment 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

Center channel should be within 2' of front speaker tweeter height

Right surround speaker

Null point of surround speaker in line with listening position

Figure 4:

Hi-Freq Level Control on rear panel of the Model 173 C.

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. Since System170 is designed to work with a subwoofer, please set all the speaker positions to Small.

The 174 SR’s size and shape allows greater flexibility in placement than most conventional surround loudspeakers. Due to their dipole design’s spatial characteristics, it is possible to place the speakers almost anywhere within the rear third of the room, but usually the best location is straight out to the sides of, or slightly behind the primary listening area, approximately 1-2 feet above ear level.

Note: Surround speakers are intended to re-create the ambient sounds in a movie scene. Throughout most of a movie or TV program you may not be directly aware of the surround speakers presence. So it’s OK if you aren’t aware of hearing the surround speakers directly. Turning the surrounds up so that you hear them all the time will only result in a much less believable surround sound experience. Remember that the signal they receive is 99% subtle sounds that should make you believe you’re in the action up on the screen.