MartinLogan Depth i [6/28] Onnections

6 Introduction

Controls and ConneCtIons

Figure 1 Top 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 Depth i is connected in multi-channel mode

(via its LFE input), the low pass filter is not active and your

processor handles the bass management. When connected

in 2-channel mode (via its speaker or line level left/right

input), the low-pass filter is active.

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 Depth 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 Depth 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 Depth i

becomes the CLX Low Pass Filter setting.

Phase Control

The phase control is entirely dependent on the size and

Accessing the Control Panel