"The dealer told me
the 9500 and 9700 can work fine from the same
This is an all too common statement I read from
mails coming in. Sorry to tell the statement is
wrong. Actually very much wrong.
It's probably not easy to make a living from
selling drivers and if the dealer had said no,
he'd probably not sell any tweeter that
day....DIY dealers actually live on the
assumption that it is easy to make a crossover,
which it is not. I've seen complete phantasy
crossovers written on the back of the invoice for
some extremely expensive crossover components....
Sorry, I get carried away...
The 9700 tweeter features
"symmetric drive", i.e. copper plating
of the center polepiece and it has cavities
routed into the top poleplate too. Due to
symmetric drive, the 9700 will have a rising
frequency response towards higher frequences as
can be seen below.
Sept. 2009: 9900 tweeter now
included in study. Read below.