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Mid Tweeter
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Here are some more information for Mid Tweeter:
Your car's existing tweeters can be accentuated with mid range speakers to mix a high quality sound with low decibel voices which gives you a whole new level of acoustic experience. These speakers can produce stereophonic sound for both, high and low frequencies. This means that adding subwoofers, mid-range speakers and car tweeters to your auto's music system can give you clear high pitched sounds and you can hear even the faintest guitar riffing in the background.
These speakers come in different shapes and sizes, not to forget the extensive color ranges available which complement your car's interiors and existing accessories. Moreover, tweeter speakers are quite affordable and when combined with the various other advantages that they offer, you can bet on them in the long run. Maintaining these speakers is not a hassle at all and they promise a long shelf life combined with minimal after sales service which makes these a great buy.
There are various companies in the market which are into the business of manufacturing car tweeter speakers. Almost all of them deliver high quality tweeter speakers as per the needs and wants of music buffs. You can go through their websites to get a comparison of these speakers and choose yours according to your taste and style.
Thus, car tweeter speakers are the next big thing hitting the market when it comes to car accessories and combined with their low cost and quality music output, these speaker systems would soon reign over the hearts and minds of music lovers all over the world.
Want to Know More?
Click For FREE Information On Portable Speakers.
NS-2000
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Yamaha NS-2000 Speaker, front view.
Yamaha NS-2000 Speaker, front top right view.
Yamaha NS-2000 Speaker, tweeter.
Yamaha NS-2000 Speaker, midrange.
Yamaha NS-2000 Speaker, woofer front view.
Yamaha NS-2000 Speaker, rear panel cable terminals.
Yamaha NS-2000 Speaker, front with cover attached.
First produced in 1982, the NS-2000 is an improved version of the older NS-1000 speaker that was first made in the early to mid 1970s. Like the NS-1000, it is a 3-way acoustic suspension speaker system with a beryllium-dome midrange and tweeter. However, the woofer of the NS-2000 was entirely new, made of pure carbon fiber instead of paper. The cabinet is also improved and is larger and heavier than the NS-1000.
The NS-2000 was Yamaha's top-of-the-line, flagship speaker product when it debuted. A few years later, the NSX-10000 was produced in limited numbers and is very similar to the NS-2000. The NS-1000xw was produced shortly after the NS-2000, and it is essentially a smaller version of the NS-2000. Also of note in Yamaha's line of beryllium-dome speakers is the GF-1.
Woofer
The woofer is made from pure, long carbon fibers that were fabricated into sheets. Eight of the sheets are bonded together to make cone. The dust cap in the center is also a carbon fiber sheet formed into a dome. The woofer magnet is 11,350 Gauss and 220,000 Maxwell. The frame is diecast aluminum.
The original rolled edging on the woofer was made of polyurethane and designed for optimal sonic performance. However, it was often fragile and deteriorated on NS-2000 speakers. Fortunately, replacement of the edge can be done by speaker repair shops and the woofer can then continue working well.
The frequency response of the woofer is rated down to 28 Hz, making the NS-2000 a full-range speaker that may not need a separate subwoofer for low frequencies. The crossover starts at 500 Hz.
The specifications read that the woofer is 33cm (13") in diameter. It is 13 inches when measured between the outer edges of the diecast aluminum frame. The inner diameter of the frame, including the cone and foam edge surround, measure about 12 inches.
Midrange
The midrange dome is 8.8cm (3.5") in diameter and made from beryllium metal, fabricated by vapor depositing the metal onto a dome mold. The dome weighs only 0.5 grams. Beryllium is the lightest metal element and it is also very strong. The result is that the midrange dome is very responsive.
The dome surround is made from a cloth that is coated with two types of resins and is folded to create creases that are tangent to the dome. This design holds the dome firmly, yet allows the dome to move accurately.
The midrange dome is covered by a protective wire net. The dome is also partially covered by a ring. The ring is designed to function as a sound diffuser to improve sound dispersion and stereo imaging, but it also helps protect the dome. Some owners of the NS-1000 and NS-2000 have experimented with removing the wire net and diffuser to hear the difference, but the dome should not be touched. The NS-2000 has a cloth cover, and for some sound purists it makes a sonic difference to them to remove the cover at least (like the muffled sound of talking through a t-shirt or not).
The midrange operates the frequencies between 500 Hz and 6 kHz. The magnet is 18,400 Guass and 150,000 Maxwell. The frame is diecast aluminum.
If input power handling is exceeded, or the dome is defective, the dome can crack or shatter into pieces. If this happens, it is possible for beryllium metal particles to be released into the air. Beryllium particles in the lungs and body are toxic and carcinogenic. Do not inhale anything from the dome.
The midrange level control knob can be turned to adjust the level between +2 dB to infinity (no sound). It is perhaps best to not move it and leave it at 0 dB. The tweeter has a similar level adjustment. Some owners of the NS-1000 and NS-2000 have modified their speaker to bypass these level controls which could possibly add distortion. The improved speaker, the NSX-10000, does not have these level controls.
Tweeter
The tweeter is a beryllium deep dome design with a diffuser ring and protective wire net. It operates the frequencies 6 kHz to 20 kHz (and capable of much higher). The dome size is 3cm (1-3/16") and it weighs only 0.028 grams. Similar to the midrange but smaller, it also has a tangential surround made of cloth coated with resins. The magnet is 18,800 Gauss and 34,000 Maxwell. The frame is diecast aluminum.
Cabinet
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About the Author
Professional editor working for Automatic Ball Valve.
Need help making my own speakers?
ok, I am really into making my own speakers. I have done all the online projects with paper plates and plastic cups, but im ready for a bigger project. I have all the basics down, but i need help with the variables. For example, how does the angle of the speaker cone affect the tone? How does the resistance affect tone, and how do you change resistance in the first place? Do the materials of the cone and dust cap affect quality? what ranges of sound should I divide up between the tweeter, mid driver and woofer? Any other bits of advice? Answers are greatly appreciated.
All of your questions appear focused on dynamic moving-coil transducers, which as one might expect are extremely popular with DIY loudspeaker hobbyists. A moving-coil transducer, hereinafter referred to as a “driver,” is available in a wide variety of designs, sizes and prices. As important as the drivers are they are by no means the only important consideration when designing a loudspeaker system. You will also need to carefully consider the type of enclosure, (including materials, etc.,) the type of crossover (active, passive or combo,) the size and acoustics of the listening room, and the type of music or audio that you wish to reproduce. That said I will attempt to give you brief answers to your specific questions.
Q: How does the angle of the speaker cone affect the tone?
Not all drivers use common straight-sided conical diaphragms. In addition to conical diaphragms you will also find convex domes, concave domes, flat diaphragms (honeycomb or solid,) and curvilinear diaphragms. Also, when it comes to high frequency drivers, aka ‘tweeters,’ you have a few more ‘practical’ choices from which to choose: piezoelectric (unpopular with the audiophile crowd,) true ribbon, planar magnetic (a close cousin to the common moving-coil transducer,) and the Heil Air-Motion Transformer* (which has seen a great deal of interest as of late.) All have their strengths and weaknesses so you will have to choose carefully relative to your specific application, objectives and budget. The bottom line is that the angle of a straight-sided conical loudspeaker diaphragm is not a useful indicator of driver performance let alone an ‘intra-manufacturer’ option from which you the end-user may choose. Furthermore, diaphragm geometry data is almost never published by manufacturers.
Q: How does the resistance affect tone, and how do you change resistance in the first place?
Resistance, by itself, does not affect “tone.” However resistance is important in loudspeaker design, particularly when it comes to crossover networks and as a constituent of voice-coil impedance.
The most common methods used to passively alter resistance invariably entails the use of resistors, potentiometers or rheostats, any of which are found in various loudspeaker systems (though the better loudspeaker designers eschew the use of potentiometers and rheostats.)
Q: Do the materials of the cone and dust cap affect quality?
For a variety of technical reasons the type of loudspeaker diaphragm and dustcap material can noticeably influence the sound quality (as well as the cost of a driver.) You will have a multitude of choices when it comes to selecting drivers and driver materials. However until you have accumulated a great deal of experience and knowledge, along with the appropriate test and measurement equipment, your safest option is to simply determine what the better loudspeaker manufacturers are using and choose similar drivers.
Q: What ranges of sound should I divide up between the tweeter, mid driver and woofer?
There is no hard and fast rule when it comes to crossover frequencies. The choice of crossover frequencies will depend on the drivers and enclosure design you choose and—to a lesser extent—the type of music or audio that you wish to reproduce and your budget. The crossover is an extremely important element of any good loudspeaker design and, if you wish to use a passive crossover network, is best accomplished by using loudspeaker design software.
If for any reason you find yourself overwhelmed or lacking in tools or resources I recommend that you give serious consideration to purchasing a well-designed loudspeaker kit (even if it only consists of the drivers and crossover networks, which you can then complement with your own custom enclosures.) Doing so is an almost foolproof method of constructing your first DIY loudspeaker system. Also, do not forget that the listening environment always plays a significant role in the quality of sound reproduction and must be taken into consideration when purchasing or designing loudspeaker systems.
Nevertheless I suggest that you read as many loudspeaker reviews as possible from the leading audio review magazines – both online and hardcopy. If you can find a library that has them in their holdings I recommend reading the back issues of both Speaker Builder magazine as well as Audio magazine. Above all, before you purchase any drivers or materials, start by purchasing a copy of the Loudspeaker Design Cookbook by Vance Dickason.
## LOUDSPEAKER COMPONENTS & PARTS SUPPLIERS ##
http://www.e-speakers.com
http://www.madisound.com
http://www.partsconnexion.com
http://www.partsexpress.com
http://www.solen.ca
http://www.speakercity.com
http://www.zalytron.com
Acoupower Subwoofer Drivers
http://www.acoupower.com
AuraSound Loudspeaker Transducers
http://www.aurasound.com
*Precide SA - Heil Air Motion Transformer
http://www.precide.ch/eng/eheil/eheil.htm
####### RESOURCES #######
Loudspeaker Design Cookbook
http://www.audioxpress.com/bksprods/products/bkaa68.htm
Bullock on Boxes
http://www.audioxpress.com/bksprods/products/bkaa8.htm
audioXpress (Old Colony) Loudspeaker Reference Books
http://www.audioxpress.com/bksprods/BKSLOUREF.htm
Linkwitz Lab - Loudspeaker Design
http://www.linkwitzlab.com
Arthur C. Ludwig’s Sound and Audio Website
http://www.silcom.com/~aludwig/contents.htm
Klippel GmbH - Application Notes
http://www.klippel.de/download/group.asp?group=35
Klippel GmbH - Publications - Papers
http://www.klippel.de/pubs/papers.asp
D. B. Keele, Jr. - Papers and Publications
http://www.xlrtechs.com/dbkeele.com/papers.htm
JBL Professional Technical Library
http://www.jblpro.com/pages/tech_lib.htm
ALMA - The International Loudspeaker Association
http://www.almainternational.org
________________________
http://www.hometheatershack.com/forums/subwoofer-tests/
http://www.diyaudio.com
http://www.speakerbuilding.com
http://www.avsforum.com
####### LOUDSPEAKER DESIGN SOFTWARE #######
WinISD Pro (freeware)
http://www.linearteam.dk/default.aspx?pageid=winisdpro
mhSoft Online HiFi Speaker Design Tools
http://www.mhsoft.nl/spk_calc.asp
Free Audio Software and On-Line Enclosure Design
http://www.audiogrid.com/audio/
LspCAD Software (Free demo download is available)
http://www.ijdata.com
LspCAD U.S. Distributor
http://www.audioxpress.com/bksprods/SOFDES.htm
Drawings of common loudspeaker enclosure designs modeled by LspCAD software:
http://www.libinst.com/LspCAD.htm
BoxCAD and SoundEasy Software
http://www.interdomain.net.au/~bodzio/
(I recommend downloading and reading the BoxCAD Manual)
SPEAK Loudspeaker Modeling Software
http://www.gedlee.com/speak.htm
(Includes Acoustic Lever™ design simulation)
LEAP - Loudspeaker Enclosure Analysis Program
http://www.linearx.com/products/ProductsTop.htm
### ELECTROACOUSTIC MEASUREMENT SYSTEMS ###
CALSOD
http://www.users.on.net/~audiosoft/
The CLIO System
http://www.audiomatica.com
MLSSA by DRA Laboratories
http://www.mlssa.com
Klippel GmbH - Transducer Diagnostics
http://www.klippel.de
####### MEDIA AND PRESS #######
http://www.6moons.com/archivelibrary/loudspeakers.html
http://www.audio-ideas.com
http://www.theaudiocritic.com
http://www.avguide.com
http://www.boundforsound.com
http://www.hifichoice.co.uk
http://www.hificritic.com
† http://www.hifinews.co.uk
http://www.hometheaterhifi.com
http://www.iar-80.com
http://www.positive-feedback.com
http://www.sensiblesound.com
http://www.soundandvisionmag.com
http://www.soundstagelive.com
† http://www.stereophile.com
http://www.stereotimes.com
http://www.uhfmag.com
http://www.ultimateavmag.com
####### ADDITIONAL RESOURCES #######
http://answers.yahoo.com/question/index?qid=20070602144000AAsRqgw
http://answers.yahoo.com/question/index?qid=20070315192558AAp0RUX
http://answers.yahoo.com/question/index?qid=20070302060928AAxAQvq
http://answers.yahoo.com/question/index?qid=20080227203259AADT9rS
http://answers.yahoo.com/question/index?qid=20070804231636AAypxlo
http://answers.yahoo.com/question/index?qid=20070930105138AAEfyIN
http://answers.yahoo.com/question/index?qid=20071228142328AAS90LB
http://answers.yahoo.com/question/index?qid=20070602123254AAyf5cR
http://answers.yahoo.com/question/index?qid=20071214134405AAwsfRj
http://answers.yahoo.com/question/index?qid=20080205211630AArO64a
####### RECOMMENDED READING #######
“Subwoofer Performance for Accurate Reproduction of Music”
Benjamin, E. and Fielder, L.
JAES, Volume 36 Number 6 pp. 443-456; June 1988
http://www.aes.org/e-lib/browse.cfm?elib=5147
A Day at the NRC With Paul Barton of PSB Speakers
http://www.soundstagelive.com/factorytours/psbnrc/
Audio Science in the Service of Art
http://harman.com/wp/pdf/AudioScience.pdf
The Art of Speaker Design
http://www.nutshellhifi.com/library/speaker-design1.html
The Family of Direct Radiators
http://www.nutshellhifi.com/library/speaker-design2.html
Introduction to Dynamic Loudspeaker Design
http://www.theory.physics.ubc.ca/341-07/speaker.pdf
B&W - Development of the B&W 800D
http://www.bwspeakers.com/downloadFiletechnicalFeature800_Development_Paper.pdf
B&W - Development of the Signature 800
http://www.bwspeakers.com/downloadFiletechnicalFeatureSig_800_White_paper_Final_10.07.01.pdf
The Listening Room - Part I and Part II
http://www.enjoythemusic.com/Magazine/manufacture/0502/
http://www.enjoythemusic.com/Magazine/manufacture/0602/
“Loudspeakers and Rooms - Working Together”
http://www.harmanaudio.com/all_about_audio/loudspeakers_rooms.pdf
”Maximizing Loudspeaker Performance in Rooms”
http://www.harman.com/wp/pdf/MaximizingLoudspeaker.pdf
Here's why Sachin joined Twitter
After conquering the cricket field, Sachin Tendulkar is all set to break new records - this time in the virtual world. He signed up on Twitter at midnight on Wednesday, and on Thursday, he had over a lakh followers. In a one-on-one, Sachin talks about his tweeting ways.
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