Atlantic Technology 4200e THX instruction manual System Setup, Bass Management

8 System Setup

System 4200e 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 4200e C is designed to be used in the Normal mode. Additionally, 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 dedi- cated subwoofer, please set all the speakers in System 4200e to Small.

Figure 4

	Boundary Compensation Use this switch
BOUNDARY
	to adjust the lower frequency output of the
ON	speaker to compensate for the typical
	sound colorations caused by placing the
THX / NORMAL	speaker close to a TV screen or building it
	into a wall unit or cabinet.To set these con-

trols, sit in the prime listening position and have someone switch between the compensation choices, using well recorded dialogue or musical instru- ment recordings. Choose whichever switch position sounds most natural and real to you.

NOTE: Although these controls have been designed to compensate for various acoustic room anomalies, we recommend that you try them to hear the difference that they make in the sound of the sys- tem. For any number of reasons, you may decide that you prefer them set in a particular manner inconsistent with your room’s acoustics,but which sounds best to you. Experiment. It will be worth it.

Dipole/Bipole Operation of the SR Speakers

HF ENERGY

- REVERBERANT
+ DAMPED ROOM		INPUT
	-
0 THX / AVERAGE		+

BOUNDARY

ON

THX / NORMAL

BIPOLE DIPOLE

In Dipole mode the 4200e SR’s produce ambience with mini- mal localization (best for most movies and video soundtracks), and more localizable sound in the Bipole mode (preferred for some music recordings). Switching between Dipole and

Manufactured under license from THX Ltd. THX, THX Ultra2 and

THX Select are registered trademarks of THX Ltd.

Operation of the Rear Panel Controls on the LCR Speakers

	High Frequency Energy This control
HF ENERGY
	changes the tilt or roll-off slope of the
- REVERBERANT
	tweeter. It has been designed to help com-
+ DAMPED ROOM	pensate for different room acoustics. The
0 THX / AVERAGE	THX/ Average position is intended for
	rooms with a reasonable combination of

reflective (hard) and absorptive (soft) surfaces. The Reverberant position is designed for rooms with an abundance of reflective surfaces like hard- wood 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 absorbent rooms with lots of soft surfaces. Speak- ers in overly damped rooms can sound dead and lifeless unless compen- sated.

Bipole mode is easily accomplished using a toggle switch conveniently located under one of the speaker’s grilles.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 delivers the most involving and believ- able surround performance in most situations.However,as noted above,feel free to experiment with both switch positions.