Clever idea. Seems like if the mouth of the horn let the sound from the back of the driver radiate directly into the room then this design would act pretty much like an expanding transmission line. One side direct radiating, the other with a 180 degree delay line.
one slight problem, the sound from the front is close to that from the rear that there will be alot of cancellation.
This is a Tapped Horn...
take a look at this thread http://www.diyaudio.com/forums/showthread.php?s=&threadid=79102 as well as this white paper at Danley sound labs http://www.danleysoundlabs.com/pdf/danley_tapped.pdf
take a look at this thread http://www.diyaudio.com/forums/showthread.php?s=&threadid=79102 as well as this white paper at Danley sound labs http://www.danleysoundlabs.com/pdf/danley_tapped.pdf
Thanks,
I was in doubt if it was just a variation of a "rearloaded" horn
But as both sides of driver are active, something different ought to happen, and Danleys white paper seems to exsplain some of it
Could be worth something, so here are my plans with drawings of my 1. floor, intended to be used as "listening room"
I was in doubt if it was just a variation of a "rearloaded" horn
But as both sides of driver are active, something different ought to happen, and Danleys white paper seems to exsplain some of it
Could be worth something, so here are my plans with drawings of my 1. floor, intended to be used as "listening room"
Attachments
Hey, cool idea! I like it. I think you would have a couple of periodic things happening. Resonances due to the length of the throat of the horn and interference due to phase differences of back wave and front wave. The resonances of course will give you an increase in dB and lengthen the original impulse. The intereference bounce between somewhere around +6 to -12 db perhaps? hm anyways, i could figure out the actual formula if you are interested. i would try it out anyways!
Thanks!...thats nice
But it will take at least a year before its possible
Its kind of a dream, isnt it
But it will take at least a year before its possible
Its kind of a dream, isnt it
oldshool
look here Subscoop-horn ® fra Electro Voice
look here Subscoop-horn ® fra Electro Voice
An externally hosted image should be here but it was not working when we last tested it.
That's a bit like a horn loaded dual chamber, dual port (isobaric?) sub.
Using an electical equivalent, its a 1/4 wave radiator with a tuning stub for z match.
It may pay to add a panel behind the driver to extend the point where the pressure waves meet, into the mouth of the horn. That may broaden the freq res.
It's certainly worth exploring.
Geoff.
Using an electical equivalent, its a 1/4 wave radiator with a tuning stub for z match.
It may pay to add a panel behind the driver to extend the point where the pressure waves meet, into the mouth of the horn. That may broaden the freq res.
It's certainly worth exploring.
Geoff.
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