Subwoofer Vibrations - AVS Forum | Home Theater Discussions And Reviews
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Old 10-07-2012, 04:46 AM - Thread Starter
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Hey All,

This is the first time i post on these forums, my problem is becoming to severe that i have to do it. i have a Hardman Kardon HKTS 5.1 speaker setup connect to a Harman Kardon AVR 158 A/V reciever. Whever i am watching movies at at certain ranges i feel a lot of vibrations and room vibrates as well (Central AC unit shakes and the noise is really bad). I am not sure if this is an issue in the finishing or i am setting something up incorrectly. Can someone guide me to:

  1. Cehck where the problem is originating from?
  2. If the problem isn't the house what can id to calibrate the audio (Put a carpet under the subwoofer, Set the speakers to small and crossover to 120HZ)

i am not too proficient in A/V but i am trying to learn. Where i live there is a definite lack in professionals so it is a bit hard for me. Appreciate any help provided.

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Old 10-07-2012, 07:05 PM
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Um...ahem. OK here goes. Im assuming this is not a troll post (I'll give you the benefit of the doubt).

Is this the first sub you've had? Is the house new? How big of a room is it if your AC is shaking?

Just a few thoughts. Im running 2 12's paired, in a 2400sf house, and although stuff rattles in every room of the house, my AC doesnt.
Treating the rattles after installing a sub is normal. It took me about 3 weeks to get everything "nailed down" for example velcro on the back of all my pictures on the first floor. Using painters tape to tape the inside of my AC/heat registers. Stuff like that.

Your system has an 8" sub. If your AC ventilation is rattling, I would call your builder.
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