Question about JBL SCS200.7 Home Cinema Package System

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Subwoofer Bass Level Problems

The bass level on the Subwoofer is overpowering when home theatre system is turned on. Even with level turned to minimum, bass is so loud it has to be turned off during operation.

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  • jbny14 Nov 28, 2007

    I appreciate your help with this topic but, unfortunately none of those are issues with my system. The Sub is actually sitting below my big screen on a hardwood floor with the port facing the viewers and the speaker (cone) underneath facing the hard wood. The system looks exactly like the one I have pictured there. It seems as if the on/off (bass leveler) knob on the back may be defective because of the way the volume/bass level sounds. The speaker itself is completely intact and does not seem to be "blown". All of the satellite speakers work just fine, but the bass on the sub is way off...any suggestions?

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What is your sub stood on? If it is on a piece of furniture then this could be the problem. Bass frequencies travel further than higher frequencies due to their longer wavelength and will also be transmitted through any solid objects the speaker is in contact with. The solution is to mount your sub on a piece of foam to provide some damping.

Also if your sub has a port (a hole) on the back or side this needs to have a good 3 or 4 inches clearance from nearby walls or panels.

Finally the speaker cone itself needs to have a clear path to push sound energy into the room, if this path is blocked by furniture (some people like to hide them under tables) then it may make that furniture vibrate.

Posted on Nov 27, 2007

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