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hornworks [message #19035] Sat, 30 December 2006 10:42 Go to next message
DanTheMan is currently offline  DanTheMan
Messages: 84
Registered: May 2009
Viscount
I've got a question er two. What would be the effects of adding DynaMat or similiar material to the sound path of a horn(front chamber and horn area)? And what is the effect or purpose of the front chamber and what would ne the effect of eliminating it? In other words, what purpose does it serve? I know it will increase pressure, but what is the advantage of that? And the disadvantage? Would you loose efficiency, but gain bandwidth by removing it? Sorry if I'M being redundant. Thanks for any reply in advance!

Dan

Re: hornworks [message #19036 is a reply to message #19035] Wed, 03 January 2007 10:44 Go to previous messageGo to next message
Bill Wassilak is currently offline  Bill Wassilak
Messages: 402
Registered: May 2009
Illuminati (1st Degree)
::What would be the effects of adding DynaMat or similiar material to the sound path of a horn(front chamber and horn area)?
Attenuated hi frequencies.

::And what is the effect or purpose of the front chamber and what would be the effect of eliminating it? In other words, what purpose does it serve?
It acts a a low pass filter. So eliminating it would let higher freq. pass.

::I know it will increase pressure, but what is the advantage of that? And the disadvantage?
Horn gain-over a narrower bandwidth, disadvantage-less efficent horn.

::Would you loose efficiency, but gain bandwidth by removing it?
Yes.

HTH
Bill W.



Re: hornworks [message #19039 is a reply to message #19035] Fri, 05 January 2007 18:46 Go to previous message
DMoore is currently offline  DMoore
Messages: 58
Registered: May 2009
Location: Seattle
Baron
ditto what Bill said.

Also think of the front chamber as a capacitive space, exactly like putting a capacitor across the terminals, it reduces high frequencies along with a reduction in reactance.

Removing it allows the bandwidth to be determined by the driver/throat/horn Fc combination.

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