We need a separate article for this. Comments?--Light current 22:02, 20 May 2006 (UTC)
An image of a tower speaker would be a nice addition if anybody has one. Also, could some of the talk be archived? It's awful long.
Well that was quick. I'd've left some of 2006. I guess we'll see if anybody is bothered by it. --Howdybob 23:04, 8 June 2006 (UTC)
You can always bring some back if you think its been prematurely archived. 8-| --Light current 23:36, 8 June 2006 (UTC)
I removed these and added links to home theater and surround sound in teh szee also section.
There are various different speaker set-ups for home cinema speaker systems. They include :
It is important to note that the sound channels offered to the speakers may be original individual channels (normal 5.1) or they may decode additional channels from the surround channels (This distribution can be accomplished by a Dolby Digital EX decoder, a THX Surround EX decoder) or they may be simulated (where the two surround channels are spread to center rear or twin rear speakers.
See also: Home theater in a box
So-called wireless loudspeakers are becoming popular in many applications, such as home theater, due to their convenience, removing the need to run speaker wire. Despite its name, however, the unit is really a wireless receiver, amplifier and loudspeaker in a single box.
Home cinema systems generally include multi-driver systems.
'Multi driver' refers to any speaker system that contains two or more separate drive units, including woofers, midranges, tweeters, and sometimes horns or supertweeters. Many multi driver systems use a bass reflex, or ported, design. These incorporate a small hole, (called a port), in the speaker cabinet to allow the low frequencies generated by the rear of the woofer cone to escape from the cabinet in phase with that radiated from the front of the cone. This improves the bass response of the system.
Why is a Loudspeaker always round and cone shaped the way is invariably is? I havn't seen or heard this discussed amywhere. I assume it's beacuse of the shape of a sound wave, but I would love to hear a detailed explination, and of any variations on it.
On the question of Tesla's possible invention, see: http://www.tfcbooks.com/teslafaq/q&a_040.htm
In particular this quote attributed to Tesla (1916): "Whenever I received the effects of a transmitter, one of the most convenient and simplest ways [to detect them] was to apply a magnetic field to currents generated in a conductor, and when I did so, the low frequency gave audible notes." Page author cites Prodigal Genius by John J. O'Neill. It sounds like Tesla was listening to the raw note produced by the wire (the wire would vibrate in the field) rather than to a coil attached to a cone. Busy man. Twang 00:34, 11 July 2006 (UTC)
I snipped the following text from the efficiency section of teh main article. I susggest it gets its own home in an article or section on dB Drag contests, although some of the text in question is factually questionable or misleading, IMO.--Ron E 16:28, 28 October 2006 (UTC)
Current state-of-the-art loudspeakers can approach apparent efficiencies of 70% or higher, but only under very special circumstances and in a narrow frequency range around resonance. In closed or small environments (such as cars or bedrooms) it is far more important to have a speaker with a high Xmax (cone eXcursion maximum) as opposed to high (dB/(W·m)) rating. A higher Xmax indicates that the driver can move a larger volume of air as power increases. A few top of the line woofers have a very low "sensitivity" rating i.e. 80 to 86 dB/(W·m) (a nominal efficiency of 0.1%). However at full power in an enclosed automobile may achieve 160+ decibels at 20% to 40% apparent efficiency. In general a low frequency speaker designed for high SPL's will have a larger and or heavier magnet, and a higher Xmax.
Loudspeaker enclosures are likely to advance as far as they did in the late 1950s, thanks to new materials that can allow manufacturers to produce the required heavy walls with curved shapes. Defeating the 10% distortion levels of straight-sided enclosures is now cost-effective for mass manufacturing, and sound quality improvements will be available with products for the common consumer with the common budget. Products using curved shapes and heavy walls will become available with sound quality improvements immediately noticeable to the average consumer. Enclosures may even become works of art. Professional public sound at concerts may use fully spherical or egg-shaped loudspeaker enclosures.
The text above appears biased and factually incorrect. Straight sided enclosures do not have "10% distortion". Egg shaped and spherical enclosures have been possible for many years.--Ron E 16:43, 28 October 2006 (UTC)
The RMS link in the See Also section links to a disambiguation page. someone needs to fix it, so please post back here when you have done it.
Thanks
Stwalkerster 14:07, 13 September 2006 (UTC)
I need some help. I have two pairs of Coby CV-H56CIR headphones both which have an out of phase connection making one speaker louder than the other. How can I fix them without modifying anything? 68.168.82.226 02:30, 26 November 2006 (UTC)
There is no such thing as RMS power. I correct. --82.158.89.187 14:15, 8 December 2006 (UTC)
Sensitivity should not be expressed as dB/W·m because that would imply that there is an inverse and linear relationship between the SPL and the power or distance. This is not true. It shoud not be expressed, either, as dB/W/m. The correct term is dB for 1 W at(or @) 1 m. Sorry for my english.--82.158.89.187 15:29, 8 December 2006 (UTC)
The portion of the article that refers to the different speakers (sub, mid, and tweeter) is incorrect. Vritually no "subwoofers" go above 200 hz. High drivers generally kick in at around 12k ish. This portion of the article needs to be rewritten for accuracy. Austinro 17:55, 27 December 2006 (UTC)