Niles Audio Speaker manual Boundary Effect

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PLACEMENT FOR HOME THEATER REAR APPLICATIONS

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Figure 4. Two pairs of HDFX loudspeakers reproduce Dolby EX surround sound in a home theater room.

THE BOUNDARY EFFECT

Placing a loudspeaker in a corner can powerfully affect the way a listener perceives bass response. Known as the boundary effect, placing loudspeakers close to a wall/ceiling boundary or near a corner-wall boundary will emphasize certain bass frequencies, while canceling others. This effect can make the loudspeaker sound excessively boomy and inaccurate to some listeners, while to others it just seems like more bass sound.

As a good rule-of-thumb, if you like listening to your current pair of loudspeakers with the bass turned up, you’ll enjoy corner placement. However, if you listen with the tone controls at neutral, try keeping the loudspeakers at least 2 or 3 feet from the boundaries of the room.

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Contents Hdfx Table of Contents CongratulationsFeatures and Benefits INSTALLER-SELECTABLE Acoustic Fine TuningIntroduction Microperf Aluminum Grilles BIPOLE/DIPOLE and FX/CUT SwitchesEasy Retrofit Installation in Your Existing Home NILES’ HD HIGH-DEFINITION Voice MatchingInstallation Considerations Mounting an Hdfx vertically into a wallTools and Precautions Recommended Amplifier PowerLoudspeaker Wire Insulating the Wall CavityPlacement for Home Theater Rear Applications Loudspeaker PlacementOn Next Boundary Effect Running the Loudspeaker Wire in NEW Construction Installation FundamentalsAbout Drilling Concealing Loudspeaker Wire About Interior WallsAn example of unobstructed wall space for loudspeaker wiring Other Possible Loudspeaker Wire Routes Include NEW Construction IN- Stalling a BracketInstalling the Bracket NEW Construction Installing a BracketConcealing Loudspeaker Wire for a Future Installation Existing Construction Installing a BracketExisting Construction Installing a Bracket Finishing the Installation Installing the FramePainting the Grille and Frame Connecting and Installing the Loudspeaker Connecting a loudspeaker wire to the Hdfx terminalsChecking Loudspeaker Phase Locate the dimples on the front baffleSetting the BIPOLE/DIPOLE Mode Acoustic Fine Tuning Setting the DIRECT/DIFFUSE Sound Field BalanceInstalling the Grille Removing the Grille Listening AT Higher VolumesCleaning Removing the LoudspeakerSpecifications Limited Warranty Warranty Registration Card YesL e s a u d i o C o r p o r a t i o n