phase adjustment? (1 Viewer)

[Philip_G]

Stupid question, but I searched and coudln't find an anwer.
is there an easy explanation for how to set the phase on a subwoofer and why you need to?
thanks

 

[Greg Monfort]

A stupid question is one you already know the answer to.

On the assumption you don't, there isn't an easy answer. WRT subs, our hearing isn't too good in the LF, so if you have an adjustable phase switch, just set it where the sub sounds loudest, and you'll be 'close enough'. If it doesn't, reverse the leads to see if it makes it louder.
GM
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Loud is beautiful, if it's clean

 

[Philip_G]

Ok, sounds simple enough
thanks

 

[Poul Nielsen]

Philip,
as for why you need to set the phase switch/knob correctly, it is there to compensate for the time difference between your sub and your front speakers. Unless they are placed with the same distance to your listening position, the sound will not hit you at the same time. At the crossover frequency this can cause phase problems as the soundwaves coming from the sub might be "pushing" when the fronts are "pulling" or vice versa. That way they cancel eachother out and you get a dip in the frequency response around this freq, usually 70-120 hz. The phase switch/knob correctly set will in most instances help this. As stated above - set at the position that yields the loudest bass.
Best regards,
Poul Nielsen