CONTROLS AND CONNECTIONS
Accessing the Control Panel
The control panel is located behind the inset metal plate located on top of the subwoofer. To access the control panel, gently press the area above the MartinLogan logo. When the spring releases gently pull the metal plate away from the subwoofer.
Control Panel
Level
Setting the level too high will cause the bass to seem bloated and is the single most common cause of bad sounding subwoofers. A rule of thumb is that the subwoofer should not draw attention to itself, but should simply make the system’s low end seem more extended and accurate.
Low Pass Filter
When the Descent i is connected in
in
As a general rule the Low Pass Filter should be set at the option approximately equal to (or below) 70% of your main speaker’s lowest frequency response. Example: The MartinLogan Vista’s lowest frequency response is 43Hz. 70% of 43Hz equals 30.1, so you should set the Descent i’s low pass filter to 30Hz. Remember, this is a general rule. We advise that once you try the recommended setting using the formula above, you should try the surrounding settings to see which sounds best.
Optionally, an internal module in the Descent i can be upgraded with a custom tailored Low Pass Filter setting for use with the MartinLogan CLX loudspeaker. When this upgrade is implemented the 30 Hz setting on the Descent i becomes the CLX Low Pass Filter setting.
Phase Control
The phase control is entirely dependent on the size and
