User manual BOSTON ACOUSTICS CPS 12WI

[. . . ] Maintain a minimum distance of 2" (50mm) around the front, rear, and sides of the apparatus for sufficient ventilation. The ventilation should not be impeded by covering the ventilation openings or placing on or around the apparatus items such as newspapers, table-cloths, curtains, etc. No objects filled with liquids, such as vases, shall be placed on the apparatus. Either the power inlet connector on the rear of the apparatus or the power plug at the wall must remain accessible, to be able to disconnect power from the apparatus. [. . . ] The auto-on circuitry only activates or deactivates the power amplifier. Make sure your subwoofer and receiver are unplugged when making the connection (230v models include a main power switch which turns off all power of the subwoofer). Power: When plugging your subwoofer in be sure to use a wall outlet, or dedicated electrical outlet. These on-board electrical outlets do not offer the amount of current or proper isolation required by a power amplifier, such as the one in your subwoofer. Line level or LFE: On most systems use the line level input or the LFE input. These inputs accept the line-level signal from your receiver's subwoofer output. Your receiver's manual should indicate which input is most appropriate. Hooked up this way, the receiver's amplifier is relieved of having to reproduce the difficult low bass signals that can drive the receiver into audible distortion. In some cases it can also depend on several other settings within a receiver. We recommend consulting your receiver manual for further assistance in this area. Use an RCA cable (not included), as shown, to connect your digital receiver's LFE/subwoofer output to the subwoofer. For stereo or Dolby Pro Logic systems use the "sub out" connection from your receiver to the input on the subwoofer marked "L" or "R". If the receiver in your system does not have a subwoofer or LFE output you can connect the CPS Wi subwoofer to a preamp output. As a starting point, set the crossover control on the subwoofer about 10Hz higher than the lower limit of your main speakers' bass response. Fine-tune the crossover setting by ear for the smoothest blend with your main speakers. Use these high-level terminals with receivers that do not have subwoofer output. The speaker inputs accept both left and right channel speaker signals from your receiver. When using a home theater receiver, set the speaker type to "Large. Certain receivers use speaker grounding circuits that may be incompatible with external powered audio products, such as powered subwoofers. When speaker wire is used instead of line level cables, this incompatibility can result in an audible hum when the receiver is turned off or switched to a different speaker channel. If this should happen with your Boston Acoustics subwoofer, you will need to make a ground cable and connect it to either RCA single conductor (-) RCA to (-) RCA ground cable line input on the subwoofer and any unused RCA line input or output on your receiver use either RCA jack (see diagram). The proper ground cable for this application should consist of two male RCA plugs that have their negative outside terminals (or "sleeve") connected to each other by any length of single conductor copper cable. [. . . ] Your responsibilities are to install and use them according to the instructions supplied, to provide safe and secure transportation to an authorized Boston Acoustics service representative, and to present proof of purchase in the form of your sales slip when requesting service. Excluded from this warranty is damage that results from abuse, misuse, improper installation, accidents, shipping, or repairs/ modifications by anyone other than an authorized Boston Acoustics service representative. This warranty is limited to the Boston Acoustics product and does not cover damage to any associated equipment. This warranty is void if the serial number has been removed or defaced. [. . . ]