things you can not see
gap geometry, shorting rings, spider and surround compliance and lineararity, cone mass, coil length, wire diameter, former type and weight.
custom ordering dramatically increases costs..then everyone needs a cut of the car audio driver, SB, arc, distributor, retailer.
gap geometry = defined by the basket &chassis
rings = i dont know what those are
spider = defined by the basket &chassis + cone surrounds, and your mechanical properties, you cannot really change it unless you change other things along with it. you can alter it a bit.. but what you do in there, will not make much more difference than a new driver gradually softening down as it gets older.
coil length = defined and limited by the basket & chassis , spider and surrounds.
wire diameter = irrelevant as we have exact impedance and exact inductance.. if the wire was changed at all, at least one of these parameters would change
former type and weight = a manufacturer is limited to the technologies either they own or commonly available. it wouldnt make much sense to convince them to use a generic coil, while they have their superior and patented coils.
a factory isnt a small boat.. a factory is titanic..
you cannot change things as you like without costing a ton of money..
changing the next month manufacture plan for a factory, is a lot of work, and a lot of money. you can do "minor" differences, that will cause minor improvements, that doesnt justify "major" retail price differences. any major improvement would be seen in either of the features, and two drivers would definitely sound and bench different. Yet, i am not really for or against either of the brands here.. this is a very common issue that we are exposed to every day, and i am pretty much immune to it.
in the end.. the fact that both drivers have been inspected and tested to perform exactly the same, and show exact TS parameters after the tests.
clearly explains, whats going on there.
there is only one logical explanation to this, apart from the misprinted or purposefully misleading TS parameters
SB values are measured on a broken in driver
Arc values are measured on an unusued driver
the value differences make perfect sense to me. does it not make any sense at all to others, as i havent seen anyone looking into it ?
let me point out one by one
wouldn't your QTS get lower as your driver breaks in? suspension softening down = less mechanical resistance =more pushing power = less qts .. yes no ? and same thing would effect below :
wouldn't your FS get lower as your driver breaks in ?
wouldn't your vas increase as your driver breaks in ?
wouldn't your efficiency increase as your driver breaks in? (also added on above, that as a driver is used, your coil settles in, and your glue dries better with coil heating and resonating and all that)
both drivers have
exact coil diameter
exact basket and chassis
exact dustcap.. (though the distributor claims dustcap has been altered to show better performance.. it looks the same to me, and i dont see how a basic dustcap can make a driver sound heaps better, its called "dustcap" for a reason.. its job is to protect the coil )
spider is claimed to have been improved.. how much of it can you improve, when the suspension of your driver is limited and defined by other factors... can you replace your 15" tyres with 19 ones and expect the car to drive properly...
now if you think you can make a driver sound heaps better by pretty much changing nothing as limited above..
i will send you my best pair of speakers for free, along with pretty flowers and a thank you card.