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What's phase 0 degree - 180 degree?

Hi,
I have a JM Lab Electra Sub, and it has one switch which marks 0 degree and 180 degree. The switch sets at 0 degree when I brought it. However, the bass is less when I set the switch to 180 degree, and bass increases when at 0 degree. So, my question are
1. What's phase?
2. What's degree should I set on the sub so that it goes well with my main speakers?
3. How's important of phase? Does it matter if I set 0 or 180 degree?
Thank you very much
Dt
worldcup86

Showing 1 response by helpfull16yearslate

helpfull16yearslate's avatar
helpfull16yearslate
4 posts
 
I know this thread is close to 2 decades old, however I felt the need to share. To answer your question, the switch is simply an easy way to set speakers up for an Isobaric loudspeaker enclosure with a cone to cone configuration without having to hard wire one speaker to be approximately 180° out of phase. One woofer pushes as the other pulls is the best I can describe how it works, without going all "M.I.T.". The long story made short is that you end up with the same thump in half the space. Four 18's in the same sized enclosure as a typical two 18's enclosure. Pretty awesome right? Below is a link to the Vue website, which is a great M.I.T.-Light explanation of this design. Have fun!!

http://www.vueaudio.com/isobaric-subwoofer-design/

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