JBL 305PMKII [14/22] Audio connections

AUDIO CONNECTIONS

Connect signal sources to either the XLR or 6mm (¼") INPUT connectors. Connect a single signal source to

the speaker using either the XLR INPUT connectors, OR the 6mm (¼") TRS INPUT connectors. Do not connect

multiple signal sources to the XLR and 6mm (¼") input connectors simultaneously.

If the LSR310S subwoofer is being used to reproduce the .1 LFE channel in a surround sound system, connect

the .1 LFE signal to either the LEFT or RIGHT input of the subwoofer.

SETTING THE SUBWOOFER LEVEL

When the LSR310S subwoofer is used in a system with 3 Series MkII Studio Monitors, the ideal balance is

achieved when the position of the subwoofer VOLUME control is set to the same position as the main speaker

VOLUME controls. However, note that the placement of the speakers in the room can affect the amount of bass

heard at the listening position. If more or less subwoofer volume is desired, use the subwoofer VOLUME control

to achieve the optimum balance for the application and your preference.

PLACEMENT AND POLARITY SETTING

Because the human ear cannot easily recognize the origin of low frequency sounds (the sounds are said to

be “non-directional”), subwoofer placement is not nearly as critical as main channel speaker positioning.

The LSR310S is designed to be placed directly on the oor and not elevated or mounted in any way. Set the

POLARITY switch to the setting that yields a stronger perceived bass response at the listening position.

In a stereo system, the subwoofer should optimally be placed between the two main speakers. In a surround

sound system, the subwoofer should be placed between the center and left channel speakers or the center

and right channel speakers. Precise central placement is not necessary. Centered positioning in the room can

sometimes cause unwanted cancellation of low frequency content, so it is recommended that the subwoofer be

placed slightly off-center and not at the midpoint between the left and right walls.