I am confused about how WinISD models excursion in relation to xmax. Does WinISD show excursion as peak to peak? Or as 1-way Xmax? When designing a sub, can I effectively double the excursion I see in WinISD to determine my absolute max excursion without blowing the sub? Currently my design has to keep the wattage low so that the entire graph is below the xmax line, but can I go above that?
Hi,
A driver has linear Xmax, effective Xmax (not linear),
and damage Xmax, i.e. hitting the end stops excursion.
Well designed drivers can certainly exceed linear Xmax
and are designed to to do so in a controlled manner.
Once you exceed linear Xmax unsurprisingly input power
versus excursion is no longer linear, distortion begins.
The transition from linear to non linear varies with
different drivers and its very hard to generalise.
Due to musical dynamics and spectrum you certainly
should have a sub amplifier far more powerful then
the subs single frequency sine wave power handling
would suggest, a point completely lost on most.
rgds, sreten.
A driver has linear Xmax, effective Xmax (not linear),
and damage Xmax, i.e. hitting the end stops excursion.
Well designed drivers can certainly exceed linear Xmax
and are designed to to do so in a controlled manner.
Once you exceed linear Xmax unsurprisingly input power
versus excursion is no longer linear, distortion begins.
The transition from linear to non linear varies with
different drivers and its very hard to generalise.
Due to musical dynamics and spectrum you certainly
should have a sub amplifier far more powerful then
the subs single frequency sine wave power handling
would suggest, a point completely lost on most.
rgds, sreten.
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