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Subwoofer Controls
Power On
Plug the subwoofer’s AC cord into a wall outlet. We do not recommend using use the
outlets on the back of the receiver. The subwoofer features auto on/standby. An LED
indicator next to the volume control indicates what mode the subwoofer is in.
RED = STANDBY (No signal detected, Amp O)
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 Control
Begin by adjusting the Subwoofer Volume Control to the 11 o’clock position. Further adjust the Subwoofer Volume Control
until you hear a match in volume between the main speakers and subwoofer. Ideally, bass response should not overpower
the room but rather be adjusted so there is a natural blend across the entire musical range.
Operation
When using the MCS 90 in a Dolby® Digital or DTS
™
home theater system, make sure all speakers are set to “Small”. When
using 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 oer dierent 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 subwoofer
output 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 Service
The satellite and subwoofer enclosures may be cleaned using a soft cloth to remove ngerprints or to wipe o dust. All wiring
connections 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 dierent location within the system. Should the problem persist in this speaker the problem
is within the speaker. If the speaker sounds ne in the new position it is a strong indication of a more in depth issue with the
electronics in the system. In the event that your MCS 90 ever needs service, contact your local Boston Acoustics dealer or visit
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 plug
is connected to a “live” receptacle.
MCS 90
LED indicator