Works great with a subwoofer but is totally wrong for proper bass woofer
Physics of downward firing woofers
Ok ... this question will show my complete lack of knowledge about physics ... but here goes anyway:
Every now and then I come across a speaker with a downward firing woofer. I wonder: why don't the sound waves bounce off the floor back towards the speaker, rattling the bejeezez out of it and / or messing up the woofer itself?
~Jim
Every now and then I come across a speaker with a downward firing woofer. I wonder: why don't the sound waves bounce off the floor back towards the speaker, rattling the bejeezez out of it and / or messing up the woofer itself?
~Jim
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- 39 posts total
Advantages and did advantages.... Personally, it is rare that a down firing woofer is as accurate as a front firing. It isn't impossible, but the floor makes an effect on the bass. The gap between the floor and woofer can act as a slot load to a ported cabinet, giving a bass increase at given frequencies. Kinda like adding another port. If the woofer is too close to the floor as the bass rebounds, it can cause some cancellation.... So Getting a down firing right is tougher than a front firing. Next, a down firing woofer does offer some cone protection if it were ever needed. Down firing ports are a very different scenario and really are a different conversation, they are not affected by the same problems of a down firing woofer. |
inna - Usually done for omni or semi-omni directional designs, like Linkwitz LX Mini http://www.linkwitzlab.com/LXmini/Introduction.htm Floor bounce is the wrong word for bass, but interference is a real thing. Anytime you see a woofer far from the midrange and near the floor you are seeing designers think this is important. Perhaps this is more related to having an even boundary re-inforcement? Best, E |
- 39 posts total