Talk:Horn loudspeaker

message: The description of the operation of a horn is not correct. This is indeed a type of impedance matching as discussed below.Jackocleebrown (talk) 22:06, 9 June 2008 (UTC)
thread_title:  Operation 

message: I'm a little sketchy on the specifics of acoustic impedance, but it sounds like this is a form of impedance matching. — Omegatron 23:16, 25 April 2006 (UTC)
replies: text: It is a type of impedance matching. The horn makes it appear to the driver that its driving a very small acoustic resistance (or something like that). Rohitbd 21:20, 10 August 2006 (UTC)
replies: text:  Hmm... It would be nice to clarify this in the article. — Omegatron 02:54, 11 August 2006 (UTC)
thread_title:  Impedance matching? 

message: An anon ed deleted this link as spam, but I don't see any problem with it. Dhaluza 08:54, 18 May 2007 (UTC)
replies: text: I don't have any problem with it either. I've issued a vandalism warning to the anon. I suggest other editors do the same if it continues to be removed. GlassFET 14:30, 24 May 2007 (UTC)
thread_title:  Frugal-Horns Site 

message: The Synergy horn concept has been touted in the Danley white paper as having less distortion due to there being less speaker cone excursion at the same SPL as a standard horn, yet Danley doesn't include a distortion plot or associated THD or THD+N numbers in his white paper. :User:ww says he's chasing down a citation for there being greater distortion in the Synergy horn. FWIW, Tom Danley is one of the good guys, an anti-snake oil defender of truth by way of exacting measurements. He's not a fan of standard loudspeaker measurements performed at 1 meter distance since a physically large loudspeaker allows the measurer to move the measurement mic around in order to 'game' the specifications and avoid (for instance) port distortion, group delay and phase problems. Danley prefers to measure at 10 meters with power increased to 100w, matching the theoretical SPL obtained by 1 watt at 1 meter... Ten meters and 100w is more of a real world experience anyway, in terms of professional concert, theater and event loudspeakers. At any rate, we'll let his Synergy horn design defend itself. Binksternet (talk) 01:04, 31 May 2008 (UTC)
replies: text: Changed 'tapped' to 'Synergy'... the section under discussion is about multiple entry horns with more than one bandpass involved. Tapped horns are typically one bandpass in the subwoofer range. Binksternet (talk) 19:58, 31 May 2008 (UTC)
thread_title:  Synergy horn distortion 

message: *Peavey Quadratic-Throat Waveguide. (2000) Paper by Charlie Hughes and John Murray which first covers a brief history of selected horn designs.
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*Patent application. Waveguide loudspeaker with adjustable controlled dispersion. Guido Noselli, Stefano Noselli, Outline
What's needed is to identify which of these were the most influential. Binksternet (talk) 07:48, 23 December 2008 (UTC)
thread_title:  Information sources 

message: The current page has shown only one type of horn implementation in the "improvements on basic designs" section for well over a year.  This is an enormous oversight, in my opinion.  There are dozens of modern horn designs, each with its own distinctive properties and advantages.  To show only one makes the Wikipedia/Horn_speaker page nothing more than an advertisement for a particular type of horn.
To illustrate the absurdity of the Horn_speaker page as it now stands, look at an automobile engine analogy. If you were to list car engines and their improvements, you might start with the basic internal combustion engine, then show flatheads, overhead valves, and overhead cams. You would probably show gasoline and diesel engines. These would be reciprocating engines, and you might also list Wankle engines and other variants.
What is displayed now on the Horn_speaker page is just one horn type, a patented implementation sold by only one manufacturer and licensees.  It represents a very small minority of horn loudspeakers in use today.  To further the automobile engine analogy, this is like listing just the Wankle engine, even though it is the least common variant. Most cars have reciprocating engines, so while the Wankle is a viable alternative, it certainly should not be listed as the only improvement on basic designs. To do so leaves the uninformed reader to believe that the Wankle is the only improved design since the engines in the Model A.
I like Wankels as much as any other engine but would never leave a reference page about internal combustion engines to list them as the only improvement from basic designs. It would be irresponsible to do so, since it is available from only a very few manufacturers. It could be said that to do so unfairly advantages Mazda and perhaps Ford and it also leaves an incomplete page with slanted information.
The Horn_speaker page as it stands now is slanted, incomplete and biased. To use Wikipedia terminology, this page is the subject of a Wikipedia:NPOV dispute. To have left it this way for 16 months is extremely irresponsible, in my opinion. Then to lock it now, in this state, is really unfair. I don't think that should be allowed.  It should be at least unlocked and the {POV-section} tag applied.
My suggestion is to remove the reference to the CoEntrant/Unity style horns until other technologies are included on this page. Until a more rounded listing of improved horn speaker implementations are listed, it is my position that none should be listed. At least make a start rather than to leave the solitary reference to a technology that is only offered by a small number of manufacturers that are clearly in the minority.
Zyxxy (talk) 02:29, 27 December 2008 (UTC)
replies: text: Regarding the assertion by User:Zyxxy that the horn speaker article shows only one implementation and that it is slanted and biased: I see a bunch of horns listed. There are conical horns, exponential horns and tractrix horns mentioned as well as conical, quadratic and oblate-spheroid waveguides. Each of these are important developments--all that's really missing are constant directivity (CD) horns, manta-ray and biradial horns, along with a few others that were less important. My friend Zyxxy can very easily suggest a framework or template for the article which takes these designs and shows each of them described with importance proportional to how much of an effect they had/have on the industry. Binksternet (talk) 06:38, 27 December 2008 (UTC)
thread_title:  NPOV dispute [Improvements on basic designs] 

message: Still to be done on this article:
*Add Geddes and oblate spheroid waveguide
*Add Voigt (1927) and tractrix done 
*Mention hyperbolic-exponential (Vincent Salmon, 1946)
*Mention circular
*Karlson (1952) assymetric sound projector
*Add JBL's 1980s acoustic lens horn modifier plates
*Nexo's assymetric dispersion CD horn
*Tannoy's use of LF driver as horn for HF driver
*A section on phase plugs past and present
*More about low frequency horns
*More about hi-fi and DIY horns
*A section about how horns combine in arrays, including line array concepts
*Something about materials, ringing and sound-deadening treatments
*Half-, quarter- and eighth-space loading (corner horns, etc.)
*Community's PC horn
*Specific notes about folded horns
*Vented, ported and other horn designs which use the back side of the driver to serve some purpose
...and more as I think of it. Binksternet (talk) 22:17, 29 December 2008 (UTC)
thread_title:  To Do list 

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thread_title:  External links modified 

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