"Don Pearce" wrote in message
...
On Sun, 19 Nov 2006 12:56:28 -0000, "Keith G"
wrote:

You should also know that the full-range driver is in fact a myth. They
are all dual cone devices with some sort of mechanical crossover

Hi Don - yes, the majority are as above, but I'm talking single cone
here.


I would also disagree with Don's statement, especially if you take the
umpteen million single cone/FR drivers that are used worldwide in radios,
TVs, cars &c. - I certainly have single cone Visaton drivers on the go
here
myself...

Well, those umpteen million single cone drivers in TVs and radios are
anything but FR - they pretty much universally have no bass and no
treble.



Ah, but they *can* have - ask yer mate Dr Bose or any 'horn' cabinet
builder....!! ;-)



Which Visatons do you have again? I've just looked at their web site,
and everything I can find has a separate treble unit of one sort or
another in the middle of the bass cone.


FRS8s in the Needles and B200s back in their boxes....

http://www.impactaudio.co.uk/speaker...b6ddb0ba26b286


Let's put this 'frequency extremes' thing to bed once and for all - there is
no shortage of high frequency with just about all the drivers I have
used/considered and which quote a top end of 18K or better and up to 30K in
some instances. Bass is no worse than 'ordinary' speakers and is dependent
on cabinet/room science, as you know better than I.....

See again:

http://www.apah69.dsl.pipex.com/show/LS35a.JPG

for an example of a speaker with 'no frequency extremes' which would appear
to benefit from the use of a subwoofer in *no different way* to many (maybe
most) FR designs - *if* you need yer trousers flapped...!!

One visitor here, on hearing my Pinkies...

http://www.apah69.dsl.pipex.com/busc.../buschorns.htm

"Whoah! They've got more bass than my AEs...!!"

(The pinkies have 4" FR drivers and the AEs are/were 3-way floorstanding
speakers with 165mm bass units - EVO 3s??)