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   Home » Horn-Loaded Speakers» The IDEAL horn system (28 posts, 2 pages)
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  »  New  The “Dead Points of Live Sound”..  Confused...  Playback Listening  Forum     28  231343  05-14-2005
  »  New  Srajan, 6Moons, sex industry and sapphire horns..  Unless the objective is .......  Horn-Loaded Speakers Forum     4  51255  07-11-2006
  »  New  The most promising “best” commercial speaker..  Cessaro new Loudspeaker...  Horn-Loaded Speakers Forum     191  1356374  12-06-2006
  »  New  Macondo's Axioms: Horn-loaded acoustic systems..  No wonder...  Horn-Loaded Speakers Forum     72  433218  07-29-2007
  »  New  Jessie Dazzle Project..  Will this better to be auditable?...  Horn-Loaded Speakers Forum     172  1220611  08-03-2007
06-19-2019 Post does not mapped to Knowledge Tree
noviygera


Chicago, IL
Posts 158
Joined on 06-12-2009

Post #: 26
Post ID: 25494
Reply to: 25492
Delay on tweeter
 rowuk wrote:


I see a problem with any „coaxial“ attempt in one horn. The length of the horn is correct for one band, but not both HF and MF. If the horn is optimized for MF, if is too long for HF and works like a transmission line at those frequencies. The wrong horn flare means that the horn EQ is applied to the wrong frequencies with no appreciable gain where we need it.
Is a point source a „worthy“ goal? What sonic advantage does it offer? Is there a problem with convergence of the MF, HF and UHF at the listeners seat or is it a myth to promote hifi agendas?
Horns are decade devices as a rule (with few exceptions). That is based on the geometry of the horn, not how wide band the driver is.

I like the concept of point source not because it's trendy but because it provides equally timed room reflections and a natural acoustical environment. And a larger sweet spot of time aligned source of sound.
In my 1st example there will have to be DSP delay on the tweeter.
06-19-2019 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,203
Joined on 10-12-2006

Post #: 27
Post ID: 25495
Reply to: 25493
The Purpose of the Horn
Gera, is this an idea you're familiar with from a sonic standpoint?  The horns are supposed to boost lower frequencies within their pass bands without adding their own sound, or - more realistically - allowing for their own minimal contribution to the sound.  Problems include growing size of the horns as frequencies drop, which eventually becomes an issue where physical/temporal alignment is concerned, also "dispersion" issues, including summing/cancellation/combing.  In my Mad Hatter youth I tried almost randomly all sorts of "horns".  FWIW, I never heard folded horns I'd put in this thread.  If point source is something you cling to,  the "pure" horns approach does not seem to be the approach to take.  Not understanding the "theory" here, this omni seems almost like the "opposite" of "point source", vs., say, Heil or MBL...


Best regards,
Paul S
06-19-2019 Post does not mapped to Knowledge Tree
rowuk


Germany
Posts 274
Joined on 07-05-2012

Post #: 28
Post ID: 25497
Reply to: 25494
Serious Coax? Where?
 noviygera wrote:
 rowuk wrote:


I see a problem with any „coaxial“ attempt in one horn. The length of the horn is correct for one band, but not both HF and MF. If the horn is optimized for MF, if is too long for HF and works like a transmission line at those frequencies. The wrong horn flare means that the horn EQ is applied to the wrong frequencies with no appreciable gain where we need it.
Is a point source a „worthy“ goal? What sonic advantage does it offer? Is there a problem with convergence of the MF, HF and UHF at the listeners seat or is it a myth to promote hifi agendas?
Horns are decade devices as a rule (with few exceptions). That is based on the geometry of the horn, not how wide band the driver is.

I like the concept of point source not because it's trendy but because it provides equally timed room reflections and a natural acoustical environment. And a larger sweet spot of time aligned source of sound.
In my 1st example there will have to be DSP delay on the tweeter.

Are they equally timed? Looking at most coaxial schemes, the voice coils are NOT in the same plane, not adjustable either. Pile on top the WRONG SIZE HORN that has the length of a transmission line at HF. Sounds like trouble to me... Maybe someone has a better access to magic than I do...
My experience with coax arrangements is that the sweet spot gets smaller and is even less smooth due to transmissionline effects. In the case of D'Appolito there is a great upper MF loss in the vertical plane if you are not in the "sweet spot"


Whenever I feel blue, I start breathing again.
Page 2 of 2 (28 items) Select Pages:  « 1 2
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  The “Dead Points of Live Sound”..  Confused...  Playback Listening  Forum     28  231343  05-14-2005
  »  New  Srajan, 6Moons, sex industry and sapphire horns..  Unless the objective is .......  Horn-Loaded Speakers Forum     4  51255  07-11-2006
  »  New  The most promising “best” commercial speaker..  Cessaro new Loudspeaker...  Horn-Loaded Speakers Forum     191  1356374  12-06-2006
  »  New  Macondo's Axioms: Horn-loaded acoustic systems..  No wonder...  Horn-Loaded Speakers Forum     72  433218  07-29-2007
  »  New  Jessie Dazzle Project..  Will this better to be auditable?...  Horn-Loaded Speakers Forum     172  1220611  08-03-2007
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