M-Audio CX8 manual Using a subwoofer, Acoustic Space Switch

3. Using a subwoofer:

If you plan to use a subwoofer with your CX monitors, you will need to filter out low frequency sounds so that only the subwoofer plays low-frequency sounds (the CX monitors will only play midrange and high-frequency sounds, in this scenario). This needs to be done so that the subwoofer and CX monitors do not both play the same low-frequency sounds, causing a greatly exaggerated bass response within your studio.

The CX line of monitors address all three of these issues with the following switches:

Acoustic Space Switch 7
As stated earlier in this section, your CX	TIP: Be sure to leave at least
monitors should ideally be placed at least one
	3” of space between the rear of
foot away from the nearest wall, ceiling, or
	the speaker and a wall to allow
other large, flat surface. In the real-world, this	the rear-firing port to “breathe”
may be impractical due to space limitations	properly. Placing the speaker
within your studio. For that reason, CX	any closer than 3” may adversely
monitors feature an Acoustic Space Switch.	affect low-frequency response.
This switch compensates for placement near

walls by “shelving” (reducing) frequencies below 200 Hz. This switch should be set as follows:

0dB This default setting should be used if the monitors are placed at least one foot away from the nearest wall.

-2dBThis setting reduces frequencies below 200 Hz by 2dB. Use this setting if the speakers must be placed closer than one foot from the nearest wall.

-4dBThis setting reduces frequencies below 200 Hz by 4dB. Use this setting if the speakers must be placed within one foot of the corner of a room (i.e., the intersection of two walls).

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