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Centre speakers and TV cabinates?

Discussion in 'Home Cinema Speakers' started by ailean, Jan 26, 2004.

  1. ailean

    ailean
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    Morning all,

    I know a number of you peeps have there centre speaker below the TV inside the cabinate (I've seen the photos!;) ).

    When ever I've tried this I always end up getting p*ssed off about the booming effect when volume levels get too high (about movie watching levels rather then normal TV watching).

    Is it just me or is there some trick to this?

    I've used two differant centres before (Kef 90 & Mission 75c) and removed the back panels from the cabinate.

    Normally I give up and just stick it on top of the TV but now that gets in the way of the projector setup, only thing I can do now is wheel a little table in front of the TV and move the speaker onto that when using the projector. :rolleyes:
     
  2. Nobber22

    Nobber22
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    No trick IMO - it just depends how your speaker reacts to being in an enclosed space. My centre is in the cabinet and isn't the ideal position (WAF :rolleyes: ), but I don't get booming either. Maybe a front-ported centre will suit you better?
     
  3. mjn

    mjn
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    I built my own TV cabinet to accomadate the large size of my CDM CNT, plus it has forward firing ports so no booming effect.
     
  4. Dave H

    Dave H
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    my center is in a homemade cabinet and I put some foam soundprofing behind it and it does not boom.

    cheers Dave.
     
  5. ailean

    ailean
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    Hmmm yes I think both of mine are rear ported, I had hoped that taking the back off the cabinate would solve this.

    Dave, is your centre rear ported and is the shelf an enclosed space or open backed?

    I wonder if pading it or even sticking a hose from the port out the back would help? :)
     
  6. Dr.Rock

    Dr.Rock
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    I wondered, if you put foam plugs into a bass port (eg to reduce the booming of a rear-ported speaker), does that reduce some bass as well as booming?
     
  7. Nobber22

    Nobber22
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    Bunging my (rear-ported) Missions reduces the total bass output a bit, but it is also much tighter. Vocals on my center are also clearer with the port blocked (demo with James Earl Jones).

    I bung! :D
     
  8. eviljohn2

    eviljohn2
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    DON'T use a hose!! Reflex ports should be calculated to give the correct volume/aperture size/tube length etc so that the drive unit(s) is correctly loaded.

    My 77C1 is a sealed design so maybe consider those as well.
     
  9. ailean

    ailean
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    I was joking about the hose... mostly. :)

    I might try a bit of bung action to see if it helps.
     
  10. lowrider

    lowrider
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    I have a large rear ported Proac CC2 in a cabinet too, as I dont think sticking things into speakers ports is a good idea, at least if the are not supplied by the manufacturer, I did put two sheets of foam, height of the shelf, 30 cms wide, about 7 cms thick each, behind the port, it works very well, no more boom... :smoke:

    I can also fine tune it, moving them a little further from the speaker until the sound is to my liking... :smashin:
     
  11. ailean

    ailean
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    Thanks for the help dudes! For now I've followed lowriders idea and put some foam I had behind the port. Just fit nicely and reduced the boom to acceptable levels. :clap:
     
  12. lowrider

    lowrider
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    Good... :smashin:
     
  13. philinman

    philinman
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