Understanding Speakers and Speaker Guidelines

When most people shop for home audio speakers they often find a lot of information, but don't know what much of it means. The purpose of this article is to provide a basic understanding of some of the key elements in speakers and to offer some guidelines for the average audio consumer.

Most home audio speakers bought today are 2-way speakers. This means the speaker has a woofer for low or bass sounds and a tweeter for high sounds. There are also 3-way speakers which add a mid-range and these can sound clearer, all things being equal. For most people, however, a good 2-way speaker is fine.

Home audio speakers typically come in either rectangular or round designs. Round ceiling speakers are ideal for background music and rectangular wall speakers are ideal for surround sound systems. With this said, in-wall speakers are often just not practical to install in a given room due to room lay-out and furniture. There are certain designs of round speakers which can help offset the inherent benefits of rectangular speakers for surround sound.

One of the problems with round ceiling speakers is that they basically send the sound straight down beneath them instead of out into the room or area most desired. However, some speakers offer angled woofers so that you can install them in the corners, for example, and still have the sound directed outward into the room.

Typical sizes for speakers are 5.5, 6.5 and 8 inch. The 8 inch will generally have stronger bass with the larger woofer. 8 inch speakers are recommended for surround sound systems and 6.5 inch for background music. I would not recommend 5.25 inch speakers except for very small rooms.

A dual voice coil home audio speaker helps handle small rooms where there isn't really enough room to place two speakers. The dual voice coil speaker provides for both channels from the amplifier and these can be quite handy in bathrooms, for example.

Power ratings of speakers always get a lot of attention, but often too much attention because power is but one factor among several others. The fact is most people will rarely if ever use the full power of most speakers today because they would soon become deaf if they listened to music at peak power. Power is rated two ways; RMS and Peak. RMS essentially means the volume level the speaker can handle all day long without distorting. Peak is the top power level the speaker can handle before blowing. For most people in most homes, 40-50 watts RMS is plenty. Some speakers only specify their Peak power rating and as a rule-of-thumb, divide the Peak rating by 2 to estimate the RMS rating.

The sensitivity rating should be 89db or more is the usual recommendation. This specification has to do with how clear the speaker sounds, and below 89db the sound clarity may be poor.

Range, or frequency response, represents the low and high end range of the speaker. Here the low end range is the more important of the two, and typically, 45-50Hz is the low end of what most of us can hear. On the high end, most speakers today exceed what we can hear and usually they are 20KHz or more, which is well above what we can hear.

A speaker has to divide the signal coming into it between the tweeter and the woofer. The crossover is in effect a filter that performs this function, but whenever sound is divided there will be some signal loss. A crossover of 12db is the most common today, and again, is fine for most people. Most speakers use passive crossovers, but some high-end speakers use active crossovers which are more sophisticated and allow for adjustments. Few homeowners need speakers with active crossovers or want to make these kinds of adjustments.

The materials that woofers are made of are often cited in speaker specifications. Polypropylene is the most common material used and is okay, but bass sounds will not be as full as with other materials. Kevlar, fiberglass or aluminum woofers will cost more but do offer stronger bass end sounds. For true audiophiles with lots of money there are other highly specialized materials available, but again, just not needed for average listeners.

You will also find that some speakers today feature bridge mount tweeters and this can be a plus. Bridge mount tweeters do not penetrate the woofer cone and will not, therefore, interfere with the woofer low-end sound. This is not to say that there aren't good speakers who do not bridge mount their tweeters because there are such speakers where very few people could tell the difference. However, the difference is there and if you want a superior speaker then a bridge mount tweeter is one consideration.

The range of speaker prices today is quite remarkable. The truth is you can buy a decent pair of ceiling speakers for as little as $40 and you can buy a great pair for $200. Some people want the best and you can find those for as much as $1,500 a pair. As always, to some degree, you get what you pay for. However, it is also the case that the vast majority of us would have trouble telling the difference in sound from a good quality $100 speaker from a better quality $200 speaker.

http://www.all-thingselectronic.com

DVR software

DVR software refers to the set of computer programs and applications which allow a computer to recognize a DVR card installed in a computer. Depending on the utility, there is much DVR related software available in the market. DVR software has evolved in the last few years and is now supporting surveillance work in many organizations and homes around the world.

DVR software works together with installed DVR cards. The software provides functions such as conversion of video images to files, video compression, controlling the movement of the camera, display and playback. In a stand alone DVR, the integrated circuits present inside the DVR card itself has the DVR software embedded within it. The hardware and software in this case are configured to ensure optimal performance and the scope of conflict is reduced.

DVR operates in association with a computer, and the software is often present inside the computer. In this case, upgrades are easy, as newer versions of DVR software can be installed on the computer. However, conflicts may arise when newer versions of software are installed and upgrading software may not necessarily translate into improved performance.

DVR software is constantly evolving to meet the ever- increasing demands of users. With DVR finding use across many sectors, DVR software is also in demand.

DVR software usually also allows for CDR software, which is software made for reading and sometimes modifying CDs. If you want to be able to both manipulate DVDs and CDs, ask the respresntative of the store where you are shopping whether the software also works for CDs.

DVR provides detailed information on DVR, DVR reviews, DVR cards, DVR software and more. DVR is affiliated with Dvd R Discs.

Do You Know How To Copy A DVD?

Many people ?burn? copies of their CD?s - Compact Discs - making copies of music, e-books, data files and just about everything else. But what about DVD?s? Do you know how to copy a DVD and is it legal?

Let?s look at the legal issues first, and then we?ll examine how you go about copying a DVD -- a movie, for example, to a writable disc. Many of us are used to copying files to a CD - using ?drag and drop? technology, which involves dragging some files across your computer screen and releasing them to the drive where the CD rests. But copying a DVD involves quite a bit more and there are legal problems to consider.

Before we even get started on exactly how to copy a DVD, you need to become familiar with two important terms - encryption and copyright law. LEGAL DISCLAIMER TIME: Now, I am not an attorney and do not play one in real life so make sure you consult one in your area of residence before doing anything on your own with this information. From what I understand it?s perfectly legal to burn a copy of a DVD - if it?s for your private use in your own home as a backup copy. For example - say you have an extensive collection of DVD movies, but you are worried about your DVD?s getting scratched from using them so much - so you may want to make copies of all these DVD?s and keep them in a safe place in case some of them get scratched. That?s fine.

But if your DVD is encrypted (as most movies are) - most software that allows you to make copies won?t get around the encryption. (There are multiple sources that offer this type of software now, but it?s up to you to find them.) Bottom line - if it?s encrypted, you?re not supposed to be able to copy it. Why? Because copyright law says you need to pay a royalty to the person or studio or whoever made the DVD - otherwise you?re guilty of copyright infringement. If you copy only those videos for your own use, you?re probably ok, but start burning them and selling them on eBay you?ll be in trouble with the Hollywood studio system and the government in a hurry.

In the interest of protecting ? well, their interests, Hollywood studios came up with a little encryption system known as CSS or Content Scrambling System. This encryption doesn?t have anything to do with free speech issues - it?s all about money! The Hollywood studios figure that if they put all their cash into making the movie, the least you can do is pay them a royalty. It?s amazing how many people aren?t willing to do that, which is why the software was developed that allows you to go around the encryption. Otherwise your DVD copies just would not work.

Now, of course the Hollywood studios and a very few others have the so-called ?keys? to this system - after all, they designed it! But the rest of the non-paying public has to depend on those free, independent spirits out there to come up with a way around that encryption, as indeed they did.

Circumventing this encryption is generally known in the biz as ?ripping? a DVD (and of course copying the files to your computer hard drive) - see, you?re already well on your way to becoming a computer geek - ?geek talk? and all. If you rip the DVD to the hard drive of your computer, you can tell if the size will fit on a regular DVD. If not, you?ll need to make one of the choices available to you - such as compressing the data, removing or splitting part of it so it takes up less space.

When choosing a software package that will allow you to rip DVD?s you?ll need to choose one that fits your needs. By that I mean there are packages out there that will allow you to do it all - rip, compress, remove or split data, in addition to utilities that will let you play with the settings on your DVD and affect the quality of your final copy. If you?re not a computer geek, you may not need all those extra features - the quality between a typical DVD and one that?s been ripped is usually very slight to the average user. If you plan on going in the geek direction, you may want a higher quality end product - in other words, if you?re picky, choose a program with more features that gives you more control.

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Pioneer Plasma 43 HDE PureVision TV

The PureVision Pioneer plasma 43 hde television has a wonderful 43 inch flat screen plasma display. It has a display resolution of 1024 x 728 pixels, plus hdtv technology. This Pioneer plasma 43 hde tv is equipped with new technology that lengthens the life of this particular model.

I have researched owners opinions that view the Pioneer plasma 43 hde. Everyone scored it with 100 percent, in reference to the plasma picture quality. Also researched, was the sound quality and everyone found it to be excellent giving it also 100 percent. When durability was examined most owners gave it a 60 percent as far as ease of use. Some thought it was a bit difficult to use in the beginning, but later they got the hang of it.

In the end the Pioneer plasma 43 hde got some of the best ratings. Everyone of the owners who reviewed the television were really happy they chose it. You really can't go wrong getting this model, plus it also has a one year warranty.

About The Author
John Lloyd makes it quick and easy to find the top plasma TV's by going to http://www.best-plasma-televisions.com. Plus check out this http://www.best-plasma-televisions.com/61-pioneer-plasma.html.

Audio and Video Cables

Well in this episode I would like to talk about audio and video cables, something I like to call the artery of our home entertainment (home theater, DVD player, TV, Radio, etc.).

The audio and video cables are something important as any home entertainment equipment that you or I have in our house, yeah that?s right because our audio and video cables are like I said before, the artery of our home entertainment. Think about it, any human body can?t live without healthy arteries, so any home entertainment equipment can?t be 100% functional and give you a 100% what they can give/make without quality cables.

Do you want crystal clear in you LCD T.V without interference? you need better cables than the ones you got with your T.V; Do you want a better sound in your equipment?, you need better cables... well I think you understand what I am saying... am I right?

To ensure you that you will get the best for your money, let me explain you a little bit about the audio and video cables...

First, you need to make sure that you?ll will receive high-performance cables, the audio and video cables must transmit with the least amount of electrical resistance. Your video cable should be 75 ohms, What's impedance? It's a measurement of a cable's inherent resistance to the flow of audio and video signals. I remember that the less electricity resistance the better the video signal and that?s what you and I want for sure.

The audio and video cables must have a shield to protect your signal from any- interference such a mobile-phone, telephone, microwave, etc and for that some cables use braided copper shields, others use foil shielding, and some use both (double-shielding) to protect your music and video signals.

Remember, the audio and video cables are better when they are thicker, thicker means less electrical resistance, the less electrical resistance the better audio/video signal between ends.

The high performance audio and video cables are made of silver or copper (those two are one of the best conductors of electricity), any cable made of aluminum wire is a poor, poor conductor of electricity. Another great conductor is the fiber optic cable, it conduct the sound using light to transmit audio signals with almost no of interference.

And finally at the end of any audio and video cable (the part hat has to plug in) has to be gold for better connection, or better yet, gold-platted to avoid corrosion and better yet, I don?t know if you are a mac-fan, but there are cables like the Macbook that resist when you accidently unplug it.

While the technology and quality of the equipment continues to improve and the prices are down ( ? technology + ? prices= new DVD in our room?), the cables are not same level (at least the ones which come inside in the box), at least are they free.. jejeje

Finally, I would like to introduce the cables that for me are the best... the monster cables without a doubt are the best in the market, at least for me, it?s my opinion, you may have a different one, but don?t miss something important when you?re going to buy any audio and video cable, the facts and the tips that I am giving you today, ok?

good luck. better things come from better people... be one of them. share what you know

Helmut Reiterer
http://www.audio-video-system.com/digital-cables.html

High Definition Television

High definition television are becoming more and more popular, many people are getting a HDTV because they believe that this is turning out to be the next standard in television sets, there is no wonder to this belief since the transmission quality is definitely superior to anything that came before it. The most common thing you can hear is that someone that just got a HDTV set says that he would not have believed how fast he would get used to this phenomenal quality.

In fact, most of the HDTV users say they don?t understand how they watched television ?the old way?, and that they can not stand to watch a regular television because of its poor quality, this is even worst for sport addicts who confess that HDTV is almost a necessity for those football games.

It is not surprising then that this is not only an American trend, this HDTV madness is on a global scale, and like any other market rules this suggests that high definition will indeed become a very accessible purchase in a few year, the demand is predicted to grow in the next few years and as more television stations start transmitting in high definition more users are expected to join the market.

The companies that make the high definition television sets say that this started as a slow and gradual excitement, much of it because many people got used to the standard television broadcast, and no one thought that there will be any advancement on the level of transmission quality, most people had thought of the DVD markets and the digital signal gadgets but not about improving the actual result that you see on screen.

The result is that slowly, but surly, many are giving the high definition television a chance and once they watch it, they are hooked, and there are high chances that they will ultimately go for the high definition.

One product that has been linked most of all to the high definition transmission quality is the plasma screen, most users say that one simply can not exists without the other, that the plasma executes what the high definition enables, and while this may be very true the costs of both are still very high and not everyone can afford to purchase a plasma television set, but experts say that like all other things, this too will change in the next few years as the standards in the television market change completely, in other words they say that most people will be surprised at how quickly they will be sitting in front of their own plasma screen at home.

Anyone looking to get a high definition television set, or a plasma screen , is strongly advised to research this market before he buys anything, this market is known for its prices fluctuations and rapid changes, so make sure you buy a good product and that you are properly covered for maintenance and guarantee. Once you decide make sure you know how to install everything properly and take good care of your electronic equipment so you can use it and enjoy it for many years.

Simon Oldmann has been studying personality with focus on the effects of financial planning on health and mental stability. Simon is currently writing tips and advice on smart purchases such as a High Definition Television for ZupaTips.com

DVD Rentals With Many Options

DVD rental is a process by which an individual can rent DVDs from a rental company. Usually DVD delivery is through mail and the interaction between the DVD rental company and the individual takes place through the internet.

The model followed by most companies is:

The customer registers in the rental service and selects the titles.
DVDs are mailed to the customer.
The customer after watching the DVDs returns them.

Usually the customers are allowed to keep the DVDs as long as they want. Once the discs are returned then the company releases other DVDs to the customer. The companies give a return envelope that is used to returning the DVDs.

There are usually a number of plans to choose from:

Individual Plans: Individual rentals are for a fixed fee per disc and the fee sometimes varies with the title. This type is usually not encouraged by the companies.

Unlimited Plans: In unlimited plans you can rent as many movies as you want. However there is a limit of around 3 more than which are not sent to the customer. The unlimited plans vary from company to company, but is around $10 a month to $25 a month.

Limited or Capped Plans: In these plans a maximum limit is kept more than which the DVDs cannot be rented. If rented, then there is an additional charge. This is a comparatively cheaper type of plan.

Package Plans: To save on postage, a package of certain number of disks is sent and the return is also sent in a package. Usually around two packages outstanding is permitted. The next package is sent on return of the earlier package.

Peer to Peer Trading: In this two customers can exchange DVDs and is facilitated by the DVD rental company.

Throttling: Some customers have higher turnover rate, that is they immediately watch the DVDs and return them. This way the monthly fee works out less than the postage fee which is a loss to the company. So most companies have devised a method of slower shipments to such customers. Legally the company is right, and they send the rental DVDs from a far away warehouse.

Replacement: Most companies replace the same day if the customer returns a defective DVD.

Titles: On the websites of DVD rental companies a wide variety of DVDs are available, such as Horror, Western, Family, Comedy, Television, Action, Musical, Classics, Romance, Sports, Documentaries, Foreign, War movies etc. For marketing and easier classification titles are kept in subcategories like recent releases, popular movies, all time favorites, recommended movies, best foreign movies, Hollywood classics, Cannes movies, Science fiction.

Edited Family Movies: Most websites also keep edited versions of movies which can be watched by a family.

Keith George always writes about valuable news & reviews. A related resource is DVD RENTALS

Further information can be found at Health News