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I've edited the opening paragraph of the section on Horn loudspeakers so as to give a better background of their use. (More correctly, a brief history of the use of horns to direct and amplify sound, not just their use with drivers.)
I don't think this edit would count as "original research" as it's a bit of a link-and-cut-and-paste from other Wikipedia articles, but others might disagree. Also, I might not have conformed with proper Wikipedia style and I'd be happier if someone more familiar with Wikipedia's style standards would double-check what I've done. Thanks.
W.F.Galway ( talk) 00:15, 1 March 2010 (UTC)
Based on my reading of a commercial website that compares various headphones, my impression is that headphones with a higher impedance will require a higher voltage to drive them. On the other hand, in Wikipedia's treatment of the history of headphones there is a mention that some headphones “... used with early wireless radio had to be more sensitive and were made with more turns of finer wire; impedance of 1,000 to 2,000 ohms was common”, this is as opposed to the statement that “headphones used in telegraph and telephone work had an impedance of 75 ohms”.
Presumably what is true of headphones is also true of loudspeakers. Assuming that there's any validity to my impression that impedance and sensitivity are related then I'd appreciate some discussion of that. (Perhaps a discussion would be appropriate if I'm mistaken in my impression, if it's a common impression.)
I suppose that the same discussion would be appropriate in the Wikipedia articles for Headphones and Electrical impedance.
W.F.Galway ( talk) 14:04, 3 March 2010 (UTC)
As far as the relationship between impedance and sensitivity goes for loudspeakers (and indeed the relationship between resistance/impedance and efficiency for most electrical devices) a higher number of turns of wire in a coil of a given size generally translates to higher efficiency (as field strength = amps * turns) and also higher impedance. Because the coil has a greater impedance it is necessary to power it with a higher voltage source to achieve the same power input (power = voltage * current, (power ≠ voltage), voltage = current * impedance), but (again because of its higher impedance) it will not draw nearly as much current at that given power level (current = voltage/impedance).
At a given wattage/power input there may not be much difference between the outputs of two otherwise identical high and low impedance speakers, but generally the higher impedance speaker will have somewhat greater efficiency and therefore sensitivity due to the higher number of windings/turns of its voice coil (not to imply that the number of windings of a voice coil is the only factor that may affect a loudspeaker's impedance).
I would guess that the reason the impedance of the headphones for telegraph and telephone work was so much lower than that of early wireless technology was because telegraphs and telephones were wired (apparently at voltage levels better suited to headphones), and because of this there was less of a need for high efficiency listening devices to achieve adequate sound levels, or for high impedance devices to allow for higher than necessary voltages. On the other hand, early radios may have had circuitry with a very limited power output, or possibly higher voltage power supplies better suited to wireless communication than to listening with standard headphones. -- 173.213.130.195 ( talk) 07:17, 16 June 2010 (UTC)
Can the vuvuzela be mentioned as an even more efficient horn ? Appearantly, a practiced blower can attain 130 dB(A) ! Thus higher than a regular horn, meaning that the vuvuzela would be more efficient than traditional horns. Above that, as they're mass-produced for use in soccer stadiums (despite that it causes permanent hearing damage), and they're cheap (2€, ie via vuvuzelahoorn.nl, ...) [1] —Preceding unsigned comment added by 91.182.227.212 ( talk) 12:27, 6 September 2010 (UTC)
The article freely uses the terms "dynamic loudspeaker", "dynamic driver", and "electrodynamic driver", without defining or otherwise explaining them. It should not be assumed that the reader is already knowledgeable about loudspeaker design and its terminology; these terms should be explained. -- Lambiam 08:03, 7 September 2010 (UTC)
It appears this article is written in WP:SUMMARY style. To further this, it would seem to make sense to move additional details to Speaker driver. Any comments? -- Kvng ( talk) 14:30, 22 March 2011 (UTC)
http://www.youtube.com/watch?v=E5biZvpUyv8 http://www.youtube.com/watch?v=_mVRKvU9Pf0 — Preceding unsigned comment added by 109.86.212.21 ( talk) 22:24, 10 October 2011 (UTC)
There seems to be minimal coverage of the "foam rot" problem with speaker surrounds, though the problem has been widespread and is still continuing. There is a light allusion in passing, but nothing more. Could somebody who knows more about this problem share their Wikiwisdom on the subject? -- Reify-tech ( talk) 13:26, 15 May 2012 (UTC)
http://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Science#Question_about_subwoofers
A translation is required for this acronym. 77Mike77 ( talk) 00:22, 15 January 2013 (UTC)
That was fast! Thanks. I was just looking this up, and there is an article about it that could maybe be linked, if you think that would work. http://en.wikipedia.org/wiki/Sound_pressure. 77Mike77 ( talk) 00:38, 15 January 2013 (UTC)
Your section on driver design has a small error. The part about tinsel wire. Tinsel wire is only used to connect the coil to the terminal lugs. the coil itself is made from fine solid copper wire not tinsel wire. Sorry i cannot provide a source. All i know is what i have seen from disassembling loud speakers. Also tinsel wire is not necessary for the coil it is necessary to provide motion between the cone and frame. — Preceding unsigned comment added by Claustro123 ( talk • contribs) 16:38, 16 February 2013 (UTC)
Wikipedia Critique: Loudspeakers This is a fairly extensive article, but scientific jargon makes it a little difficult to read. The “Introduction” and “Terminology” paragraphs are particularly useful, but the “History” section doesn’t tell a story of how loudspeakers came to be as much as it plainly lists a series of events that eventually result in modern loudspeakers. The section does give readers a sense of the community of improvement that led to modern loudspeakers, and it provides some details about variations and improvements. The material becomes easier to understand after getting through the “History” section, and this is due to 1) clearer writing that relies less on jargon, and 2) illustrations. There are illustrations for speakers’ external housings, the speakers themselves and their design layouts. The article covers all the main topics, such as how loudspeakers work and how they are built. It also includes information on what determines sound quality and a section on listening environment, which discussed speaker placement and mathematical expressions explaining the physics of sound movement. This article’s 53 sources are diverse, to say the least. About half of the referenced sources are books or legitimate articles. It also includes a number of personal websites, blogs, and even a cataloged email/discussion board response from 1998. The first source listed is a personal website managed by someone who “collect(s), research(es), and write(s) about old telephones as a hobby.” While you generally wouldn’t think of these as “good sources,” many of the personal websites/blogs linked to in this article appear trustworthy, not to say there aren’t a few that do indeed look sketchy. The page also appears to be maintained attentively, with revisions every few days. There are a couple sentences at the end of the “History” section that require citation, but for the most part this article appears free from frivolous contributions. HIST406-13awatkin1 ( talk) 03:33, 18 February 2013 (UTC)
I've removed an old neutrality tag from this page that appears to have no active discussion per the instructions at Template:POV:
Since there's no evidence of ongoing discussion, I'm removing the tag for now. If discussion is continuing and I've failed to see it, however, please feel free to restore the template and continue to address the issues. Thanks to everybody working on this one! -- Khazar2 ( talk) 22:02, 21 July 2013 (UTC)
"Loudspeaker" is a somewhat dated term, and is typically reserved for larger systems such as those used in schools, auditoriums and outdoor venues. Speaker also turns up more results on Google. Ticklewickleukulele ( talk) 05:03, 15 August 2015 (UTC)
So, what say ye to that? Firejuggler86 ( talk) 21:51, 14 July 2021 (UTC)
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I came here to find info on the latest tiny speaker. I have a pair for my computer. They are about two inches square. I bought them to replace speakers I got about six or seven years ago that were about six or seven inches tall. I want to know how the manufacturer can make such a tiny box with a pretty good sound. What has changed in recent years to make this possible? BeenAroundAWhile ( talk) 06:31, 26 October 2016 (UTC)
A late section describes aliasing in a certain type of speaker. A better term is heterodyning, and requires some sort of nonlinearity to be involved. Only frequencies higher than the fundamental are produced. Aliasing (Nyquist-Shannon Theorem) relates to digital sampling of analogue signals, or even a digital signal of much higher sample rate. The signal must be low-pass filtered to a max of 1/2 the new sample rate for evenly spaced samples. Evenly spaced samples may be regarded as multiplying square or tri-square waves with a sinusoidal time signal. The result is a convolution of the two waves in frequency space. Thus frequencies lower than the fundamental will occur with equal power as the artificial high frequencies. 61.68.161.48 ( talk) 00:16, 9 January 2017 (UTC)
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You are invited to join the discussion at Talk:Passive speaker#Primary topic. Shhhnotsoloud ( talk) 08:11, 25 October 2017 (UTC)
Mention military uses, like
(not Long Range Acoustic Device). Jidanni ( talk) 16:43, 21 August 2018 (UTC)
The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
Field coil loudspeaker is very short and mostly recaps the discussion at this page. It could be merged to put these devices in context. -- Wtshymanski ( talk) 17:17, 10 September 2019 (UTC)
The current state of the article comes across as a clumsy combination of two different types of article. On one hand, there's the broad overview of the various aspects of loudspeakers in general (technology types, crossovers, general history, etc). On the other hand, there's a lot of detail on dynamic speakers.
Perhaps a better treatment of the subject would be to convert this page into a technology-neutral overview article and move the content that's specifically about dynamic loudspeakers off into a new article (I would suggest the more formal "Electrodynamic Loudspeaker" as the title for the spin-off article), leaving just a single-paragraph overview on this one like the other technologies have.
Roxor128 ( talk) 03:15, 2 April 2021 (UTC)
There seems to be good support for this but there is an apparently conflicting counterproposal at Talk:Electrodynamic speaker driver#Merge into Loudspeaker? (2022). Does anyone else want to weigh in on this?
The scope of the article is "speaker (audio equipment)", not "loudspeaker", which is semantically a subset thereof; thus, the article title should be changed. The article is about *all* speakers, from big loud ones down to small quiet ones such as those used in headphones. I will move this article to the accurate title unless anyone can present a credible argument for not doing so. Quercus solaris ( talk) 17:05, 11 January 2022 (UTC)