Phase dial?

[smashedz28 110]

Friend asked me about the phase dial on his sundown 1500. I couldn't give him an answer. What exactly is it and what does it do?

[lithium 358]

http://en.wikipedia.org/wiki/Constructive_interference

the phase dial changes the phase of the signal produced by the amplifier.

so for a simple example, imagine that both your subwoofer and midrange are playing same frequency. now if the phase of the sound wave produced by the subwoofer and midrange are in phase with each other then their amplitudes add together and the result is a more output at that frequency (this is constructive interference). For the case that they phase of one speaker is out of phase with the other the result is a loss in output (destructive interference). because the subwoofer is louder then the midrange the waves do not cancel completely.

your not likely to notice a difference no matter where you adjust the knob. all you can do is experiment with it.

[smashedz28 110]

Thanks. Thats what I needed to know