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IMPORTANT: If the fuse malfunctions, replace it with another fuse of the same type, value and current rating. This information can be found on the fuse. Speaker-In Terminals Option 1. These terminals are for making connections using speaker wire. Option 2. LINE IN Jacks This jack is for input connection using an audio cable. (see options 1 & 2 on the following page) Low Pass Frequency (LPF) Control This feature adjusts the frequency limit for low audio signals from 50 Hz to 150 Hz. This control helps you adjust the system's low frequency balance to blend your subwoofer with the other speakers within your system. An example: If you adjust the control to the subwoofers low 50 Hz setting, the filter limits frequencies above that from being reproduced or heard from the subwoofer. SUBWOOFER SERIES INSTALLATION Low Pass Frequency (LPF) Control (cont’d) Level Control Note: Dual recommends you use 16-gauge speaker wire for Opinion 1 when hooking your Receiver speaker outputs in making an audio connection to your Subwoofer. Connecting Speakers 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. SUBWOOFER SERIES TROUBLESHOOTING Troubleshooting Distortion/Knocking If you believe you hear obvious distortion or knocking sounds, immediately lower the volume level of your receiver. Those sounds often indicate that either the receiver or the subwoofer is being over driven and damage can result in playing CD's and DVD's at high volumes. You should avoid turning the bass or treble to maximum levels, and refrain from using the Loudness button when the volume level is high. This can lead to costly loudspeaker failure. Distorted or unnatural sound can also indicate poor connections. Check the connections. If the sound remains poor or distorted, the subwoofer may have a problem. Please call Dual service number for assistance. SUBWOOFER SERIES SPECIFICATIONS Specifications L10SW L12SW FEATURES • Gain control for volume adjustment. • Adjustable low pass 50 Hz to 150 Hz. • Phase switch 0-180 degrees. • High level inputs • Low Level Inputs and Outputs. • Sleep mode feature integrated into the power switch for signal sensing on/off. SPECIFICATIONS Driver: 10" Polypropylene cone with edge inverted poly dust cap Amplifier: A/B class amplifier 220 Watts Peak Power/100 Watts RMS Frequency Response: 34 – 200 Hz Dimensions with grille H/W/D: 15.75"x 12" x 14.75" Weight: 29 lbs. FEATURES • Gain control for volume adjustment. • Adjustable low pass 50 Hz to 150 Hz. • Phase switch 0-180 degrees. • High level inputs • Low Level Inputs and Outputs. • Sleep mode feature integrated into the power sw...

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