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[Jacob Shaw]

CSW claims to have invented a way to limit the excursion of a driver so that it does not exceed xmech.  Does anyone know how this works?  I have been dreaming of a way to make a speaker that can protect itself.

[Mike Hedden]

CSW claims to have invented a way to limit the excursion of a driver so that it does not exceed xmech.  Does anyone know how this works?  I have been dreaming of a way to make a speaker that can protect itself.

Its called horn loading and a high pass filter! 

Mike Hedden
Danley Sound Labs, Inc.

[Ivan Beaver]

Its called horn loading and a high pass filter! 

Mike Hedden
Danley Sound Labs, Inc.

There is another manufacturer who says they designed the cabinet (with front loaded woofers) so that the drivers would not reach excursion limits.

It is called "using a small amplifier"--------------

[Tim McCulloch]

CSW claims to have invented a way to limit the excursion of a driver so that it does not exceed xmech.  Does anyone know how this works?  I have been dreaming of a way to make a speaker that can protect itself.

Peak voltage limiting and correct HPF?  It is not necessary to reinvent the wheel.

I just hope this kind of stuff doesn't become the marketing equal of "unity", for which I could ritually disembowel Mackie's marketing staff.

[Jacob Shaw]

No I mean the transducer opens the circuit if the excursion exceeds 3".

[Ivan Beaver]

No I mean the transducer opens the circuit if the excursion exceeds 3".

So the sound stops?

That doesn't sound like a good idea.

Some people would notice--------------

I would much rather have it compressed than stopped.

[Jeff Bankston]

put a normally closed lever type microswitch with a roller on the tip against the cone. set so when the cone moves out a certain amout the switch opens. as soon as the cone moves back it closes the switch.

[Keith Broughton]

Its called horn loading and a high pass filter! 

Mike Hedden
Danley Sound Labs, Inc.

Simple and true 

[Jeff Robinson]

CSW claims to have invented a way to limit the excursion of a driver so that it does not exceed xmech.  Does anyone know how this works?  I have been dreaming of a way to make a speaker that can protect itself.

I went to the Canadian Sound Works website and found nothing like that. However, I could not refrain from posting that I would be horribly embarrassed if I published that I used "Russian Burch" (sic) to construct my speakers.

Jeff Robinson

(It is one thing to misspell a word when posting on a website, quite another trying to look like a business marketing a product, instead of a parody. Maybe people without my thousands of hours of proofreading don't even notice it, but typo's just jump off the screen and slap me upside my face.)
 

Edit: Google found 5 examples (by Russians writing in English), so apparently non-English speakers spell it that way.

https://www.google.com/?gws_rd=ssl#q=%22russian+burch%22

http://dictionary.reference.com/misspelling?term=burch&s=t