This can be a desired setting if you are using the sub in combination with tower or floor-standing speakers. If you are using satellites speakers with 5.25" cones sizes or under, you will want to move the frequency up to slightly overlap the lowest frequency the satellites can produce. If your satellite frequency response is rated at 80 Hz to 18 kHz then you may choose to move the LPF control higher to blend the highest frequency of the subwoofer slightly past the lowest frequency of the satellites. In this example you may wish to set your sub's LPF control to 90 Hz creating a mid bass coupling between your sub and the rest of your speaker system.
Balances the loudness of the Subwoofer relative to the Front speakers and compensates for room effects on the Subwoofer’s output. It should not be necessary to set the level control to maximum volume to achieve a well balanced installation, but you may need to adjust when changing between music CD's and DVDs.
Important: Use Option1 or Option 2, but not both.
OPTION 1. Connection with speaker wire - Connect speaker wires from the Receiver’s front left and right speaker outputs to the Subwoofer’s Speaker Level-In connections. Connect left channel to left input and right channel to right input. You have the option of connecting your main speakers to the speaker B outputs on your receiver if it is so equipped; otherwise, you have the option of connecting your main speakers using the connections on the Subwoofer. This will send the audio signal to the main speakers while funneling the low bass frequencies to the subwoofer. To take advantage of this option, connect your main speakers to the right and left outputs on the Subwoofer. Be sure you take care to maintain proper signal polarity by connecting the red wire to the red terminal, and black wire to the black terminal.
OPTION 2. Connection with audio cable - This connection employs a left/right audio cable. To use this option, your receiver should include a subwoofer Out jack, which is typical of receivers equipped with Dolby Digital and DTS 5.1 decoding. Locate the sub- woofer output jack on the back of your receiver.Using a standard audio cable, connect the subwoofer output onthe back of your receiver to the line-In on the back of the subwoofer. The line-out feature can be used if you choose to install an additional sub- woofer to your system. The line-out would be connected to the line-in of the second subwoofer.
