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Dual audio products are constructed using the finest quality components and we are proud of our custom designed drivers and electronics. Much effort has gone into the design of your new sub as to help you achieve years of maximum performance and pleasure. Every DUAL loudspeaker undergoes rigorous testing and quality controls at the factory to ensure years of listening pleasure. Please take a moment to read this manual prior to installing your new subwoofer. The information provided will help you obtain maximum performance. Though this manual will refer to your receiver, the instructions and recommendations apply to all consumer amplifiers as well as A/V receivers. Dual powered subwoofers are designed for indoor use only. It is important to turn off the power to your receivers power supply before connecting the subwoofer to your system. Indoor Placement SUBWOOFER SERIES PLACEMENT Placement Your DUAL subwoofer can be placed in many convenient locations in your home, but must be placed on the floor. Do not attempt an installation that would elevate the subwoofer above floor level. You should experiment with various placements. Room Acoustics can produce large apparent differences in the sound for small changes in the placement location and adjustments to subwoofer controls. For Example, directing the woofer of a forward firing sub toward one’s typical listening position and adjusting the low pass filter to 150 Hz can make the sub very directional. This means you perceive exactly where the sub is located within the room. This is not a desirable result for the most realistic audio experience. The common thinking regarding subwoofer placement and performance is to position and adjust the subwoofer in such a way that the subwoofers low frequencies encompasses the entire room with deep powerful bass and provides the most realistic imaging experience. The amount of bass perceived increases as you move the subwoofer closer to an intersecting wall surface and the highest level of bass results are realized from placement in a corner, but should be no closer than 3" from the wall surface. The floor and corner placement (loading) are actually an important part of the Subwoofer’s design. Attempt to place the subwoofer in or near the corner closest to your system's receiver to ensure the shortest possible wire or cable runs, which will result in superior performance. SUBWOOFER SERIES INSTALLATION Connecting Speakers Connecting & Adjusting Your Subwoofer IMPORTANT - When you make connections, make sure that the power switches of all components, including subwoofer, are OFF. Power Cord The attached power cord is to be used with a standard AC wall outlet (110 volt AC outlet capable of supplying at least 250 Watts) Power Indicator LED This LED is unlit when the AC power switch is OFF. It glows RED when the subwoofer is in standby mode and GREEN when the subwoofer is on or recieving an audio signal in Auto On mode. Power Switch The three position swith turns the AC supply On or Off and also sets the Subwoofers' AUTO ON feature. This feature is for your convience. When the subwoofer is set in the Auto-On mode it is not nessary to power your subwoofer completely off when not in use. In AUTO ON, the subwoofer stands by until it detects an audio signal input, then the Subwoofer turns on automatically. A few minutes after audio input signals cease, the Subwoofer automatically returns to standby mode and the LED returns to RED. The subwoofer has been designed in a way that you can leave the Auto-On feature active without causing any harm to your subwoofer. Fuse This fuse protects against minor internal and external faults. The fuse value is indicated on the rear amplifier plate near the fuse itself. If the POWER switch is ON and the power indicator LED is unlit, unplug the power cord from the AC outlet and check the fuse by unscrewing the center piece from the holder. 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 yo...
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