Atlantic Technology 2400, 1400 instruction manual System Setup, Bass Management

8 System Setup

System 1400 and 2400 High Performance Loudspeakers

System Setup

Bass Management

Some older surround sound decoders and receivers offer a choice of “Nor- mal” or “Wide-band” modes for the center channel speaker. The Model 1400 C and 2400 C are designed to be used in the Normal mode.Addition- ally,digital processing multi-channel systems provide a Bass Management menu, which typically requires you to select between “Small” or “Large” speakers during system set-up. Since these systems have been designed to work with a dedicated subwoofer, please set all the speakers in System 1400 or 2400 to Small.

If your receiver or processor has selectable subwoofer crossover frequencies, we suggest using 80-100Hz for the 2400 and 100-120Hz for the 1400.

Figure 4

Operation of the Rear Panel Controls on the 1400 C and 2400 C

High Frequency Energy This control changes the tilt or roll-off slope of the tweeter. It has been designed to help compensate for different room

acoustics. The Average position is intended for

rooms with a reasonable combination of reflec-

tive (hard) and absorptive (soft) surfaces. The Reverberant position is designed for rooms with an abundance of reflective surfaces like hardwood or tile floors,glass walls,

etc. It decreases the high frequency output of the speaker to reduce excess HF energy that builds up in live rooms. The Damped position brings the tweeter’s output slightly above flat response to compensate for overly absor- bent rooms with lots of soft surfaces.Speakers in overly damped rooms can sound dead and lifeless unless compensated.

Boundary Compensation Use this switch to adjust the lower frequency output of the speaker to com- pensate for the typical sound colorations caused by placing the speaker close to a TV screen or building it into a wall unit or cabinet. To set these controls, sit in the prime listening position and have someone switch between the compensation choices,using well

recorded dialogue or musical instrument recordings. Choose whichever switch position sounds most natural and real to you.

NOTE: Although these controls have been designed to compen- sate for various acoustic room anomalies, we recommend that you try them to hear the difference that they make in the sound of the system. For any number of reasons, you may decide that you prefer them set in a particular manner that sounds best to you. Experiment. It will be worth it.

Dipole/Bipole Operation of the 1400 SR-z and 2400 SR Speakers

In Dipole mode the 1400 SR-z and 2400 SR’s produce ambience with minimal localization (best for most movies and video soundtracks),and more localizable

sound in the Bipole mode (preferred for some music recordings). Switch- ing between Dipole and Bipole mode is easily accomplished using a toggle switch conveniently located in the speakers rear terminal cup. Please note that the vast majority of the time in movies and TV broadcasts the surround speakers are called upon to reproduce the environmental sounds that are used as cues to help get you immersed in the scene on the screen.

Once the surround speakers are properly positioned in the listening area, we recommend that you begin with the dipole mode, as this usually deliv- ers the most involving and believable surround performance in most situ- ations. However, as noted above, feel free to experiment with both switch positions.

When using as front "height" speakers, we recommend starting in the Bipole mode.