Stereo speakers are built to last. Every time you turn them on they are submitted to abuse and punishment, even more so depending on the type of music you listen to. For example, music with heavy bass shakes everything in your home. Imagine what is going on in the speaker cone.
Even the best, quality stereo speakers are bound to crackle from all of this abuse over time. When that happens, you may have the chance to save yourself some money by repairing those broken speakers instead of buying new ones.
It all starts with finding the problem causing the sound problems. It can be an enclosure damaged or maybe it blew out from an electrical or thermal fuse. Problems with the voice coil are a common problem, sometimes the crossover network is faulty and even problems as easy as a solder connection can be the cause of your problems. Whatever your speaker issue maybe, it can be fixed. Here is a breakdown of how you can repair a speaker that is blown out.
The first thing you need to do is figure out which speaker is giving you problems. You can easily do this by playing around with the stereo’s equalizer. Alter the balance and the fader to isolate the speaker causing the distortion in sound or if there is no sound at all. Be sure not to have the volume blasting or you run the risk of blowing out a good speaker.
Once you’ve figured out which speaker is the bad one, you now need to take it apart. Try to do this step carefully because you don’t want to cause further damage to a part which is working fine. Remove the faceplate of the speaker and then gently loosen the seams of the speaker’s fabric without tearing it.
Now that the speaker cone is visible, you can begin repairing it. Have some tape or glue handy since this is what you will primarily be using if the cone of the speaker is punctured or torn. You’ll want to make sure the hole or tear is completely covered before moving on to the next step.
Test the voice coil to see if it is damaged in any way such as if it melted at some point for example. If there is even the tiniest of gaps in the coil, no sound will flow from the speaker or it will sound extremely distorted, depending on the size. If you see that the voice coil is indeed melted, then just replace the speaker entirely.
If you’re going to need any replacement parts, now is the time to order them. They can either be found directly from the manufacturer but they can be expensive or from stereo specialties shops. An often overlooked fact is to know the part number or numbers of the pieces you are looking for. They are normally located on the inside of the speaker or backside of the cone. Doing so will make your life an awful lot easier.
Now that you have all parts you need to properly fix the speaker, take a look at how the damaged part is attached to the speaker. Once you remove the broken piece, you are going to need to install the new one the same way.
Now that you are all completed putting the speaker back to together, the only thing left to do is test to see if all your hard work paid off. Hook it back up to the stereo and test it at a low volume slowly turning the volume up to see if it can handle. If the speaker is still not working and you feel like did everything correctly, take it to a professional and let them fix it from there.
Seafood Steaks
February 4, 2012
Until the turn of the century, deejays were considered well equipped if they simply used DJ turntables, cartridges, CD Players and mixers. However, DJ equipment has evolved and undergone considerable development to meet modern entertainment needs. To improve sound effects and create more variety in music, manufacturers have developed modern disc jockey software. DJ software are powerful, versatile and user-friendly appliances that can be used to mix beats and rhythms. Installation of this software is easy and helps creating superior beats and new tunes. They are commonly used in studios to produce top quality music, including remix versions of older songs.
DJ software eliminates the need to invest in expensive DJ equipment to create desired tunes and beats. The software is used to develop and experiment with new DJ techniques without the use of turntables, dual CD players or mixers. Some DJ software are helpful in mixing MP3 files, by the use of multiple sound cards. They allow users to adjust pitch and tempo for each file individually. Software may contain graphic equalizers and spectrum analyzers. DJ software typically have a file navigator service that helps users locate particular sound tracks from a huge database in a quick and efficient manner.
While using DJ software, users need to plug in their headphones and listen to any other sound card that may be played or mixed subsequently. DJ software displays all supported file types along with extra information to help users preview other files simultaneously. Apart from mixing two tracks, it also allows DJs to listen to created sounds and adjust it before actually playing a particular song or rhythm.
A major benefit of using DJ software over traditional resources is the elimination of carrying a bulky music collection for every event. It is problematic for DJ’s to transport large numbers of CD’s physically because of the possibility of losing disks. Apart from this, carrying bulky equipment can be risky and expensive. With the help of modern DJ software, deejays only need to carry a laptop and connect it to an efficient speaker system to produce great music and enliven up an event.
Photo Paper
January 18, 2012
I’m writing this guide after being asked a few times on ways to connect a laptop to a TV. People want to achieve this for several reasons. First, it’s great for presentations at work, school, or home. It’s also convenient for viewing pictures and videos to friends, watching DVDs, and it is now even being used for viewing Blu-ray and other high definition content on the HDTV.
First, we want to make sure you’re getting the most out of your laptop when it comes to displaying it on the TV.
If you have an HDTV with HDMI inputs, check if your laptop has an HDMI output. If it does, you’re in luck! Your HDTV can display from your laptop in HD resolutions. All you need is an HDMI cable to connect them. If your HDTVs HDMI inputs are used up already. An HDMI switch would be the best solution for you. We supply switches that can connect up to 5 different HDMI sources to 1 HDMI input.
If you don’t have an HDMI output on the laptop, check if it has a DVI output. Some ASUS, and Dell laptops have them. If you do, you can connect your laptop to an HDTV with an HDMI to DVI cable. They are both digital cables so this will produce the same HD resolutions as a standard HDMI cable.
If your laptop doesn’t have HDMI or DVI out, it should have a VGA output. Connecting with VGA is capable of high resolutions. However, different TVs support different resolutions with VGA. You must check the maximum resolution your TV model supports with VGA.
Pretty much all laptops come with an S-Video output. It’s not going to be as great of a picture, but it will certainly do the job with an S-Video cable.
After you have connected your chosen cable, boot up your laptop and see if it has detected your TV. If not, you have to go into your display properties and look for the settings that will enable your TV to display from your laptop. Where to find the setting will vary depending on your graphics card (just look around). If you are having trouble getting your TV to show a picture, make sure you have updated the display drivers on your laptop. Now you’re probably going to want sound from something other than your laptop speakers. So you can choose to output it to your TV, or blast it from your home theater audio receiver.
The best way to connect audio to your TV or receiver is through a digital audio cable. Both a digital coaxial cable or Toslink optical audio cable will work great for crisp high quality audio. Just make sure your laptop has either a digital coaxial or an optical audio output. Some laptops use the headphone jack to double as a digital coaxial (S/PDIF) output. If you use this method, your going to need a 3.5mm to RCA adapter with a digital coaxial cable. If your laptop has none of these outputs and you still really want that high quality sound. Don’t worry! You can still get an external (USB) sound card that has digital coaxial out or optical out. I recommend the Creative Sound Blaster X-Fi Surround 5.1 SB1090 with Toslink Optical audio out.
Another way, which won’t require any add-ons, is to use the headphone (3.5mm) jack on your laptop to the RCA (red and white) inputs on your TV or receiver. To do this, all you need is a 3.5mm to 2 RCA adapter with a 2 RCA audio cable.
I know all of these cables can seem confusing to you. If you’re having trouble finding out what each cable looks like or find out more about a cable, check out the Cable Guide at CableTrain.com. All of these cables are available for you on our website as well. I hope you can now successfully connect your laptop to the TV in the best way possible!
Green Mountain Coffee
January 13, 2012
The 2011 year is quickly coming to an end and millions of Christians will soon be in the holiday spirit, shopping for Christmas gifts to exchange. There will be lots of holiday cheer this year as more people have made it back to work after the recent economic downturn. With any luck, consumer holiday spending will increase this year, giving a much-needed boost to the overall economy. Let’s break out that Christmas wrapping paper and begin shopping for Christmas gifts for all those on our list. Here are five must-have Christmas gifts for the 2011 holiday season:
Obol Never Soggy Cereal Bowl
There is a clever new way to eat your breakfast cereal every morning without having to take another bite of soggy mush. If you are like most people who eat slowly, the cereal on the bottom of your bowl becomes soggy while the top remains crunchy. A solution to this is the Obol Never Soggy cereal bowl. This simple device holds your cereal and milk in separate compartments and has an easy scoop port in which you can rake your cereal into the milk reservoir as you eat. Each bite will always be as crunchy as the last, not matter how long it takes you to eat you breakfast. This gift is available from Brookstone.com for $19.99.
Auto Wine Bottle Opener
Another great product from Brookstone.com is the Automatic wine bottle opener. Let’s face it, opening a bottle of wine is not the easiest task, especially if you have arthritis or are not very strong. Also, those around are in danger of receiving an elbow to the face when the cork finally slides out. The electric wine bottle opener allows effortless removal of both synthetic and natural corks from a bottle. A single charge can open 30 bottles of wine and it may be recharged using the ac adaptor. This device takes the difficult work out of opening a bottle and only cost $39.95.
iPhone Horn Stand Sound Amplifier
Do you remember the old days when record players used a horn to amplify sound? Vat19.com sells this cool device that allows you to amplify the sound coming from your iPhone without the use of bulky speakers that are difficult to carry around and drain your phone battery. This device uses old school technology to amplify the music coming from your phone 13 decibels higher. It also doubles as a phone stand. Set it up on your office desk and enjoy hours of music, all from your compact smart phone. $24.95.
The Switch Salt and Pepper Shaker
A must have in any household is a salt and pepper shaker. How many times have you had a difficult time finding either the salt or pepper shaker? Wowcoolstuff.com offers a simple and cool device that gives you the best of both worlds, all in one. The Switch salt and pepper shaker holds both salt and pepper and is able to be switched much like a light switch to select which seasoning you would like. This device does not need batteries and will be a great conversation piece for your gift recipient’s household. Best of all, it only costs $10.99!
Hedgehog USB Massaging Mouse
Surfing the web just became much more ergonomic with the Hedgehog Massaging Optical mouse. This device operates by replacing your existing mouse by plugging this into your computers USB port. It has an ergonomic shape and comes with soothing massage raised beads. It is great for both left and right-handed people and comes in both blue and pink. The cover is removable and also washable. This mouse works with just about any windows system. As for price, it will set you back $18. Check it out at brando.com.
Online Backup
January 9, 2012
Although there are only two main categories of guitar, within each category there is a vast range if different styles, models and varieties to ensure that there is a guitar and a sound for every occasion and performance style. The two main categories are, of course, acoustic and electrical, but to define a guitar as either acoustic or electric is very bland, and tells us nothing about the actual type, the sound it produces, or its ease of performance.
Acoustic guitars are the ones most often used as a starting point for those new to learning the guitar as an instrument, and of the types of acoustic guitar available, the one most often used and recommended as the best one for beginners is the nylon string classical guitar. The strings of acoustic guitars can be made from either nylon or string, but since nylon tends to be much kinder on the fingers than steel, being thicker and looser, this is preferable. Not only that, but compared to steel strung guitars, nylon is far easier for a beginner to use to achieve a decent quality of sound. If these advantages weren’t enough for a beginner, nylon strung classical guitars also tend to have wider necks than steel strung guitars, and this means that it is generally easier to get the fingers into position over the strings for the correct chords, without so much risk of fumbling, and accidentally catching the wrong string, or more than one string, resulting in buzzing and bad chord sounds.
With all of the advantages of nylon strung guitars, it might be wondered what would possess someone to use a steel strung guitar, but of course the difference is the sound produced. Steel strung guitars produce a much louder sound, and more jangly, but the steel pushing against your fingers can be quite painful, especially in the first few weeks of learning. After a few weeks, the skin on the fingers becomes more worn, and thicker, and able to cope with the instrument, but until that time, it is a painful instrument to start to play.
Although most guitars have six strings, there are some which have twelve, and these are divided into two sets of pairs, with the normal six strings each paired with a thinner string that plays the same note, but an octave higher. This provides a very attractive sound, but as a result of having so many strings, is very challenging to play, and not recommended for beginners.
Another breed of acoustic guitars are known as resonators, and these are purely steel strung guitars, the difference being that built in to the body of the guitar is a speaker-like resonator that was originally introduced to simply add volume to the instrument, although today they are usually played by country or blues musicians, in conjunction with a slide, as they produce quite a distinctive sound.
Electric guitars are instantly recognisable, although they can be split into two main types – those with hollow bodies, and those with solid ones. Those electric guitars with hollow bodies include an acoustic sound, with the notes being mellowed or softened slightly by the fact that the notes being played are amplified naturally to some extent. As a result of this, hollow body electric guitars are preferred by those who play jazz. On the other hand, solid body guitars, which rely on electronics and external gadgets to achieve the sound, are preferred by those who play rock. Because there is no natural acoustic sound, the instrument is entirely reliant upon the electronics, but this in turn provides far greater versatility and, perhaps more importantly, greater volume!
Chocolate Coins Detox Centers
January 5, 2012
If you own an iPhone and are a businessman, then it becomes important that you create an impression on the person you are dealing with. You can use the help of iPhone accessories to boost your image. However, when you are trying to boost your image you should do so with your clothes, car and the iPhone. Therefore iPhone can be an instrument in boosting your image as well.
Some high-end iPhone accessories will surely boost your image. There are many options open to you so far are iPhone accessories are concerned.
First thing that you need to acquire is a high-end iPhone case, which will not only protect your phone from damages but will enhance the look for it. There are several varieties of cases available in materials like, leather, Swarovski or metal. Choose the one that will make the greatest impact on your partner.
If you are not too concerned about the type or design or make of the cover of the iPhone, you can then opt for some other types of high-end accessories that will boost your image. One of the accessories that you can have is a high-class gadget, which is the wireless charger for your iPhone. The charger will ensure that your iPhone stay charged when you are using it. No matter how long you talk or use the phone your iPhone will get charged automatically. The advantage of this wireless charger is that you can move around while using your iPhone, you need not stay in one place in order to get your phone charged wirelessly.
Another thing that you can have is a stylus. The stylus will make it easier for you to browse the web on your iPhone or use the touch screen a lot more easily and efficiently.
You can also think of installing an iPhone dock on the table of your office. Or you can have one of those picture frame iPhone dock on the table and have pictures of your family in high-resolution. There are similar other hi-fi accessories that are available that you can choose from that can boost your image.
It might happen that you are too busy and would like to have the facility of online payments. You can easily find a suitable iPhone accessory to facilitate online payment. With this accessory you will be able to swipe your credit card and process the payment through your iPhone. The iPhone also has an alarm facility that you can use to your advantage. The phone will wake you up with your favorite music in the morning that will set you in the right mood throughout the day.
If you are required to make power point presentation quite often you need not worry about a laptop or a projector. Pocket projector for iPhone is available which you can carry around with ease. All you need to do is gather your audience and plug-in the accessory to your iPhone and make your presentation. The accessory is able to give you a resolution of 480 x 380 which is perfect for a small presentation. With this you can use an amplified speaker, which is another accessory that you can use with your iPhone.
Last but not the least; you can have a car kit for the iPhone. This kit will help you keep the phone well protected when you are traveling in your car. You can keep the iPhone in the kit where it will have other accessories like charger, USB cable, Bluetooth etc. the car kit might prove to be a bit expensive, but it will save you a lot in terms of repair costs.
Cdma Card Almonds The Guitar
January 4, 2012
HDMI vs DVI, what is the difference? Which one is better? Are DVI and HDMI compatible? And of course, given the choice, which one should you use? The differences (or lack there of) may surprise you. Lets take a look at each of them then evaluate the differences.
Digital Visual Interface (DVI) is a digital standard introduced in 1999 by the Digital Display Working Group (DDWG). It is designed primarily for carrying uncompressed digital video data to a display. Originally the display was a computer monitor but DVI is now commonly used for television as well. One of the main areas of confusion with DVI is the number of different connectors available, which represent different functionality. There are three main connection types for DVI, DVI-D (digital only), DVI-A (analog only) and DVI-I (digital & analog).
High-Definition Multimedia Interface (HDMI), released late in 2002, is an all-digital audio/video interface capable of transmitting uncompressed streams of data similar to DVI. However HDMI also provides the ability to carry audio signals, in addition to video, as well as incorporating HDCP, which is a Digital Rights Management technology.
So what is the difference?
When looking at the differences between HDMI and DVI we find they actually have more in common then differences. They both support digital transmission; they also are based on similar specifications since HDMI was derived from the DVI specification. There are two big differences:
HDMI incorporates content protection called High Definition Content Protection (HDCP).
HDMI supports audio in addition to digital video. (DVI only supports digital video)
Are DVI and HDMI compatible?
Is HDMI compatible with DVI? Since DVI is the predecessor to HDMI, HDMI and DVI are identical as far as video is concerned. Therefore, video backward compatibility exists. However, DVI will not support digital audio. For example, if you have an older DVI connection on your source and a HDMI connector on your display, a HDMI to DVI cable is all that is needed in order to view the video. A separate audio cable (TOSLINK or SPDIF) will be needed to carry the digital audio.
A Warning about Cable length
The HDMI specification does not define a maximum cable length. HDMI 1.3 defined two categories of cables: Category 1 (standard or HDTV) and Category 2 (high-speed or greater than HDTV) regardless, neither HDMI or DVI work well over distances greater then 15 feet. If you need a cable longer then 10 feet you will definitely want to consider top quality cables. For anything greater then 15 feet, some companies offer amplifiers, equalizers and repeaters that can help bridge longer distances.
Which one should I use today?
If available, we recommend HDMI. This is not because it is any better then DVI, only because the industry will heavily push HDMI due to the HDCP Digital Rights Management technology. However you should not expect any difference when moving from DVI to HDMI, therefore if you have DVI already, stick with it until the next standard comes around. A little off topic, but still of relevance is that you may be able to get similar quality video by using your existing Component connections. A common misconception is that Component cannot carry HDTV quality video, which is incorrect. Depending on the components in your system you may get the same or better performance with a Component connection then with a HDMI or DVI connection.
Bagless Vacuum Asbestos Lung
December 27, 2011
Ok, you’ve gone out and bought a brand spanking new plasma TV, but how do you make sure that you’re getting the best picture out of it? To do that you need to adjust the picture settings on your plasma TV, otherwise known as “plasma calibration” in the AV industry.
Before you start, you should know that the best calibration for your plasma TV will depend on your source material (i.e. what you’re watching), your input device (e.g. DVD player or satellite box) and the amount of ambient light in your home environment… among other things. You should also be aware that your plasma TV needs to be run in for at least 200 hours to allow the phosphors to stabilize, or else you will have to repeat your plasma TV calibration in the future.
You may not own a plasma TV calibration DVD, so this article will try to walk you through the steps using readily available material. Remember to use the best available connection to connect your input device to your plasma TV. In descending order, the cleanest signal (and hence best picture quality) can be obtained via: HDMI = DVI > VGA = component > SCART (RGB) > S-Video > Composite.
1. Adjust Brightness. This actually determines the black level on your plasma TV: too high a setting and black will look gray; too low and dark grays are swallowed into blackness. To set brightness to its proper level, simply play a DVD with lots of black scenes (e.g. opening scene from Star Wars). Now crank your brightness up until the black on your plasma TV look gray, then slowly dial your brightness down until the black in the movie JUST matches the black on the black bars on top and bottom of the movie.
2. Adjust Contrast. This determines the white level and is responsible for how much light your plasma TV actually emits. To set contrast correctly, play a DVD scene containing a shiny bald head/forehead (e.g. The Fifth Element). Now increase contrast until the bald patch is glaringly hurting your eyes, and then tone it down until you’re satisfied that you can see all the detail within the white.
3. Adjust Sharpness. For most poorly-encoded source material you want to use this to enhance the edges, but if done excessively this will introduce haloing and ringing around edges. It’s best to bring up a “User Menu” (from your DVD, satellite box, etc) to adjust sharpness: increase it until lots of ringing artifacts occur around the edges of the words, then decrease it until the ringing just disappears.
4. Adjust Color. Color can either be too saturated or too dull… either way the picture will not look right, with the most noticeable errors found in skin tones and green foliage. As a rough guide, you can use a DVD scene with a hand and tinker with the color until the color matches that of your own hand.
What I’ve described above is 4 basic steps for plasma calibration using only what’s available to you. If you wish to strive for more accuracy you can get a HDTV calibration DVD, but you’ll need to know which one to buy and how to use it to calibrate plasma TV because the majority of them are still catered for the CRT market.
Miami Vice Movie
December 18, 2011
In this article we will consider the common stereo and surround sound speaker location and layout types that you will come across for home theater systems.
It is common for people to spend a great deal of time and money buying and installing a large flat screen TV, but then pay little attention to the sound that they hear. They forget that the sound forms a large part of the movie experience, and if it is ignored then they will be missing out on half the fun.
Whilst the audio you get from a modern flat screen TV can be acceptable, it is nothing compared to a dedicated sound system in your room. The extra volume and clarity your will get from an amplifier and speaker setup is far superior to the built-in speakers you get with your television.
One of the important decisions you need to make if you are considering a speaker system, is to decide which speaker configuration you want for your room. Here is a list of the the most common speaker layouts you will come across. They are often given names that refer to the number of speakers in the setup, and these are the terms we will use here:
1. 2.0 Configuration
Otherwise known as good old stereo. This is the most basic setup which will have two speakers either side of your television. Although a basic setup, you can still get a much better sound than the speakers on the TV with a good amplifier and pair of speakers.
2. 2.1 Layout
This is similar to the stereo version above. The difference being there is the addition of a subwoofer. A subwoofer is a large speaker dedicated to reproducing the low, bass frequencies and can make a big difference to the sound quality – especially for movies with lots of deep bass sound effects. The ‘.1′ in the name tells us there is a subwoofer.
3. 5.1 Configuration
This is a surround sound setup, which means there are speakers placed all around your listening position to make you feel right in the middle of the action. This configuration has six speakers – front left and right, centre, surround left and right and a subwoofer. This is the most common setup for a home surround sound speaker system.
4. 7.1 Layout
A 7.1 surround sound system has eight speakers. It is the same as the 5.1 layout above, except it has two extra speakers placed behind your seating position. This speaker layout gives an even better feeling of being part of the action.
5. 7.2 Configuration
This is becoming more common and many AV receivers now support this layout. It is the same as the 7.1 configuration above except it has two subwoofers. The main reason to have two subwoofers in your room is to spread the bass frequencies around the room more evenly.
Now that you understand the different stereo and surround sound speaker location configurations you have to choose from, it is easier to make a choice as to the best layout for your room. The one that you choose may depend on the space you have available in your room, or may come down to the budget you have to spend on your system.
The main thing to remember is that any of these will give you a much better sound than you get from your TV.
Once you have decided which layout you want, there are many things to consider regarding the placement of the speakers in your room. For more information on speaker placement, follow the links below.
Investment Index
December 8, 2011
A loudspeaker, speaker, or speaker system is an electromechanical transducer that converts an electrical signal. The term loudspeaker can refer to an individual device or driver, and a complete system consisting of an enclosure corporating one or more drivers and additional electronics.
Loudspeakers are the most variable elements in any audio system, and are responsible for marked audible differences between otherwise identical sound systems. Loudspeaker performance or accuracy in reproducing a signal without adding distortion is significantly poorer than that of other audio equipments.
Some important men who made history
Ernst W. Siemens was the first to describe the dynamic or moving coil transducer, with a circular coil of wire in a magnetic field and supported so that it could move axially. He filed his U. S. patent application for a Magneto electric Apparatus for obtaining the mechanical movement of an electrical coil by electrical currents transmitted through it was granted patent No.149797 on April 14, 1874.
Oliver Lodge filed for British patent No.9712 on Apr. 27, 1898, for an improved loudspeaker with nonmagnetic spacers to keep the air gap between the inner and outer poles of a moving coil transducer. This was the same year he applied for a patent on his famous radio tuner.
Thomas Edison was issued a British patent during 1881, for a system using compressed air as an amplifying mechanism for his early cylinder phonographs, but he ultimately settled for the familiar metal horn driven by a membrane attached to the stylus.
Harold Arnold around 1925 began program at Bell Labs to improve phonographic sound recording. The first priority was the electronic amplifier using the new vacuum tube, second was the microphone, and third was the loudspeaker that would improve the balanced armature units developed for public address.
Bell Laboratories in 1931 developed the two way loudspeakers, called divided range for the demonstration by H. A. Frederick of vertically cut records. The high frequencies were replaced by a small horn with a frequency response of 3000 to 13,000 hz, and the low frequencies by a 12 inch dynamic cone direct radiator unit with a frequency response within 5db from 50 to 10,000 hz.
How the loudspeakers used to work
The first loudspeakers used electromagnets because large, powerful permanent magnets were not available at reasonable cost.
The coil of an electromagnet, called a field coil, was energized by current through a second pair of connections to the driver. This winding usually served a dual role, acting also as a choke coil filtering the power supply of the amplifier to which the loudspeaker was connected.
AC ripple in the current was attenuated by the action of passing through the choke coil. However, AC line frequencies tended to modulate the audio signal being sent to the voice coil and added to the audible hum of a powered up sound reproduction device.
The quality of loudspeaker systems until the 1950s was, by modern standards, poor. Continuous developments in enclosure design and materials have led to the significant audible improvements. The most notable improvements in modern speakers are improvements in cone materials, the introduction of higher temperature adhesives, improved permanent magnet materials, improved measurement techniques, computer aided design and finite element analysis.
Microwave Sharp Polar Watches
December 6, 2011
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