User manual BOSTON ACOUSTICS LCAI220

[. . . ] Notice on EMI: American Users: Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. [. . . ] Wiring should be done in accordance with Article 640 of the National Electrical Code® (NEC®) and with local codes and ordinances. Class 2 cable (designated CL2, CL2P, or CL2R) is typically appropriate for use in residential construction. For commercial or multi-unit residences, other wiring methods and cable types may be required. If you are not sure of the requirements for your area, check with the local wiring inspector, or with an electrician or custom A/V integrator. You will require 4 conductors from the amplifier location to the LCAi220 input, using one 4-conductor or two 2-conductor cables; and 2 conductor cables from the LCAi220 outputs to each speaker location in the room. Electricians and Custom A/V integrators are good choices for installing such devices. If at any time you feel unsure about wiring, connecting or choosing locations consult with a professional. 4 Powering the LCAi220 A 16VDC power supply is included for powering the the LCAi220. There are two separate connection points for powering the LCAi220; a front mounted connection for local powering of the LCAi220 and a rear mounted connection for central powering of the LCAi220. It is only necessary that you connect power to one of the connections. Front Connection When using the front mounted input, connect the plug from the power supply to the input on the LCAi220. The power supply plugs into a standard 110VAC outlet. Rear Connection When using the rear connection, the power supply is located with the central audio system and power wire is run from that location to the LCAi220. This configuration will require the use of the included LCApi power interface. Labeling wire is essential and saves significant time during the final hookup of your system. Make sure to leave an appropriate length in each location making installation easy and neat. DO NOT RUN SPEAKER WIRE PARALLEL WITH THE HOUSE LIGHT AND POWER CABLES. Locating speaker wire to close to electrical wire and devices can result in undesired noises such as buzzing, humming and popping noises through the speakers. Locating speaker wire too close to electrical wire and devices can result in undesired noises such as buzzing, humming and popping noises through the speakers. It is OK to cross over light and power cables if necessary but do so infrequently and only at 90° angles. When at all possible, keep speaker wire as much as 20-inches (50cm) from light and power cables and a stud bay away from electrical devices such as switches and outlets. Following these simple precautions will insure that there is no noise from an electrical device. Retro-fitting an Existing Home Wiring and installing systems in an existing home can be difficult. If you are unfamiliar with the tools required to feed wire through existing ceilings and walls it is highly recommended that you consult an Electrician, Low voltage provider / Installer and /or custom A/V Integrator for your installation needs. Likewise, if you are unfamiliar with the construction methods of the home, please consider professional assistance. Warning Always turn off the amplifier when connecting volume controls, speakers, or any other components to the system. Only professionals should perform the installation of these devices or those possessing skills in construction, experience with the proper use of hand tools, knowledge of local building and electrical codes, and familiarity with the environment in which the product(s) will be installed. [. . . ] Adjust the volume on the source device to approximately 80% of total output. Continue to turn up the desired maxiA mum level is achieved. 12V Trigger / Video In Figure #1 Figure #2 6. If a subwoofer is connected to the LCAi220, C adjust the subwoofer gain so it is balanced with theBmain speakers. D 12V Trigger / Video Pass Through E Front Controls Diagram A B D C 12V Trigger / Video In E F 12V Trigger / Video Pass Through A. [. . . ]