Atlantic Technology 272 PBM THX Manuale di istruzioni - Pagina 11
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Model 272 PBM THX
A Word About Bass, Center Channel Modes, and System Set Up
Many surround processors and receivers feature a "Wide" and "Normal" mode for the center channel
speaker. Atlantic Technology recommends that the center channel be operated in the "Normal" mode
when using a powered subwoofer. The center channel speaker will sound more dynamic and the
intelligibility of the system will generally be improved when in the "Normal" mode.
With discrete digital "5.1" channel systems (Dolby Digital AC-3, etc.) many controllers provide a Bass
Management option, which lets you set the front and rear speakers in a limited bandwidth (Small) or
full range (Large) mode. When using a subwoofer with Atlantic Technology speakers we recommend
setting such a controller to the Small position for all the speakers in the system.
Care and Feeding of Your Subwoofer
The 272 PBM THX is constructed from 3/4" Medium Density Fiberboard. MDF is a non-resonant
material ideal for speaker system enclosures. The outside is layered with a high quality black oak
finished vinyl laminate. To clean the cabinet you may use a soft cloth either dry or slightly dampened
with clean water. Be careful not to wet the cabinet or allow any water to enter the cabinet seams. Avoid
placing your speakers in direct sunlight or near a source of heat that may, over time, damage the finish.
IMPORTANT: Save Your Boxes! If you can do so, save the carton, packing pieces and plastic bags that
came with your subwoofer. They will be useful in case you move or have to ship your subwoofer for any
reason. In any case, save all packing materials until you are certain that the system has suffered no damage
in shipment. If you find such damage, either visible or internal, contact your dealer immediately for the proper
return procedure.
Subwoofer Troubleshooting Guide
Once your subwoofer is set up, you should have many years of maintenance free enjoyment from your
system. However, if you should encounter a problem, refer to the following guide to help you find the
solution. If a problem persists, you should contact your local authorized Atlantic Technology dealer.
Problem
No bass output
Audible buzz
or hum
More than one
source audible
Weak bass
Weak bass: vague stereo image
Possible Cause
AC power cord unplugged or plugged into a non-working outlet.
Input cables not securely connected or defective.
Input cable not securely connected or defective.
Single HI LEVEL input connected to the RIGHT channel only.
Ground loop through antenna or cable TV system input.
More than one source is playing.
Subwoofer too far from the wall.
VARIABLE INPUT LEVEL set too low.
Input source connected to HI LEVEL inputs is wired out of phase.
Possible Solution
Plug into a working outlet.
Check all connections, then try another input cable.
Check all connections, then try another input cable.
Connect to the LEFT input channel.
Test by disconnecting antenna and/or cable system input leads.
If hum goes away, install isolation balun(s) at that point.
All the subwoofer's inputs are active at all times. Turn off
unwanted source.
Move the subwoofer closer to a wall or corner.
Turn control up somewhat.
Check speaker wire connections and reconnect in proper phase.
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Atlantic Technology
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