Niles Audio The Boundary Effect, Operation Controls, SW300 PLACEMENT, Controls And Connectors

SW300 PLACEMENT

THE BOUNDARY EFFECT

Placing an SW300 in a corner can powerfully affect the way a listener perceives bass response. Known as the boundary effect, a placement 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 SW300 sound excessively boomy and inaccurate to some listeners, while to others it just seems like more bass sound. Some listeners prefer to place the subwoofer (or subwoofers) near the same location of the main left/right channel loudspeakers.

Because all rooms are unique, and people have different expectations with regard to audio quality, some experimentation may be necessary with regard to placement and control settings.

CONTROLS AND CONNECTORS

OPERATION CONTROLS

The SW300’s operation controls are located on the unit’s front panel, as shown in Figure 1. They function as follows:

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Figure 1. The SW300’s front panel contains the subwoofer’s operation controls.

1.HIGH PASS Frequency and ON/OFF Controls: Use the HIGH PASS control to set the high-pass crossover frequency from 60 to 160 Hz (according to your loudspeaker manufacturer’s recommendation) to drive a satellite loudspeaker system via a separate audio amplifier, from the line-level AUDIO OUT jacks (also see Figure 2 on page 8.) To activate the HIGH PASS filter, set the ON/OFF switch to ON. In the OFF position the filter is deactivated and full range audio is sent to the satellite amplifier.

2.MUSIC/MOVIE LEVEL and SETUP Controls: While listening to music, move SETUP to MUSIC and adjust the MUSIC LEVEL control to set a desired bass level. Similarly, while listening to a movie, move SETUP to MOVIE and adjust the MOVIE LEVEL control to set a desired bass level. Each level control includes an accompanying LED indicator to identify which one is currently active as triggered by your home theater sound processor or receiver (see Figure 2 on page 8). Also see SETTING UP THE SW300 on page 15.

3.LOW PASS Frequency Control: Use this control to set the subwoofer’s low-pass crossover frequency from 40 to 120 Hz. Also see SETTING UP THE SW300 on page 15.

4.PHASE Control: Use this control to set the subwoofer’s phase response from 0 to 180°. Also see SETTING UP THE SW300 on page 15.

5.The MODE indicator (on the far right) shows current status of the SW300: Green is ON; Red is STANDBY.

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