5Subwoofer ControlsPower OnPlug the subwoofer’s AC cord into a wall outlet. We do not recommend using use theoutlets on the back of the receiver. The subwoofer features auto on/standby. An LEDindicator next to the volume control indicates what mode the subwoofer is in.RED = STANDBY (No signal detected, Amp Off )GREEN = ON (Signal detected, Amp On)The subwoofer will automatically enter the Standby mode after several minutes when no signal is detected from your system.The subwoofer will then power ON instantly when a signal is detected.Volume ControlBegin by adjusting the Subwoofer Volume Control to the 11 o’clock position. Further adjust the Subwoofer Volume Controluntil you hear a match in volume between the main speakers and subwoofer. Ideally, bass response should not overpowerthe room but rather be adjusted so there is a natural blend across the entire musical range.OperationWhen using the MCS 100 in a Dolby® Digital or DTS™ home theater system, make sure all speakers are set to “Small”. Whenusing the system in a Dolby Pro Logic® home theater system, make sure the receiver’s center channel mode is set to “Normal.”Some Dolby Digital equipped receivers/processors offer different setup options for each source or surround mode (e.g., CD-stereo, videotape, Dolby Digital, Pro Logic®). In each case, follow your equipment’s instructions to ensure that the subwooferoutput is turned on and that the speakers are set to “Small” in each mode.If your receiver has adjustable crossover settings, we recommend the subwoofer crossover be set at 150Hz.Refer to the owner’s manual for your AV receiver for any additional recommendations on system operation.Maintenance and ServiceThe satellite and subwoofer enclosures may be cleaned using a soft cloth to remove fingerprints or to wipe off dust. All wiringconnections should be inspected and cleaned or remade at least once a year.If a problem does occur, make sure that all connections are properly made, secure and clean. If a problem occurs in one loud-speaker, rewire that speaker in a different location within the system. Should the problem persist in this speaker the problemis within the speaker. If the speaker sounds fine in the new position it is a strong indication of a more in depth issue with theelectronics in the system. In the event that your MCS 100 ever needs service, contact your local Boston Acoustics dealer orvisit www.Bostona.com for a list of dealers in your area.If your subwoofer does not play, check that all the connectors on the cables are making proper contact and that the AC plugis connected to a “live” receptacle.LED indicator