RGR126 Oregon Scientific Rain Gauge Review - Top Wireless Instrument

The electronic rain gauge is the most reliable lately. It is even better if it is the digital type. It is many times reliable if it is digital and wireless. This is precisely the case with Oregon products. This is a popular brand in relation to the manufacture of scientific weather instruments. If you want to set up a small weather station in your compound, buy an Oregon scientific. The models are many, but you could do well with the RGR126 cable free. This long-range instrument is available on the Internet. You should visit a store such as Amazon to view it. For only $44.10, you could have it for yourself. Coming from a reputable company like Oregon, You could control this wireless apparatus.

The following is an analysis of its key features

• The RGR126 is a wireless remote

• It displays readings daily, has a nine-day historical,

• The rainfall measurements presentations is in millimeters or inches

• The rain gauge can as well display interior and exterior temperature readings

• It has a self-emptying rain cup that automatically measures and gets rid of the accumulated rainwater

• Its wireless transmission goes up to three hundred feet for and one hundred feet for the thermometer.

The RGR126 description and benefits

If you are a serious gardener, you need a very reliable Oregon scientific rain gauge. Search no more because the RGR126 wireless rain gauge is the perfect choice. It is very convenient compared to some simple plastic rain gauges that people buy. With this style, you no longer have to keep your raincoat near. There are no trips to the back yard or lawn when it is raining heavily to record the amount of precipitation. This wireless, remote instrument works like no other that you might have used before. It has a self-emptying cup that first takes a measurement, and then eliminates the accumulated rainwater automatically.

Thus, you can wait until it stops to rain to go and view the analysis. If you want to take statistics for a whole week, you could depend on this cable free. It has a memory that keeps rain readings for nine days. As much as you would want to track rainfall, temperature changes affect your plants too. You do not have to buy a special thermometer separately. This wireless rain gauge is able to display both outdoor and indoor temperature changes. Its automatic wireless transmission range is up to three hundred feet for.

The thermometer wireless transmission range is a hundred feet. If you want it to keep the entire rainfall records, this rain gauge does it perfectly. You can also use its nine-day histories, or daily history of the rainfall. The measurements are either in millimeters or in inches. Everyone is capable of reading this Oregon scientific rain gauge. Power consumption is not a problem. The gauge uses the AA battery while the sensor uses the battery.

G. Smitty is a writer who loves to discuss many topics ranging from decorative rain gauge to professional basketball. Thanks for reading!

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Boston Acoustics Classic Series CPS12Wi Wireless Ready Powered Woofer (Black)

Boston Acoustics Classic Series CPS12Wi Wireless Ready Powered Woofer (Black)

Product Features

• Play wirelessly with the optional 2.4GHz WT50 Wireless Transmitter that delivers up to 50 feet of range
• Superior bass from a high-output front-firing, front-ported design
• BassTrac circuitry for tight, distortion-free bass at all output levels
• 12-inch, Deep Channel Design (DCD) woofer deliver more bass output from less amplifier power
• Ultra-rigid, reinforced MDF enclosure minimizes unwanted cabinet vibration to improves bass extension and detail

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Wireless Speakers - A Reality?

Cables and wires around the home are nuisance, and the more electronic kit you have the more there will be. The average home cinema set up with the standard 5 speakers and subwoofer will have no less than 20 cables going to it. It's not so much the cables at the back of the AV Amp that cause the problems, these can be neatly stored using a cable ties and a multitude of cable management systems. It's more the speakers at the rear that require cables travelling around the perimeter of the room that cause the problems. They either need to be tacked to the wall, hidden in trunking, or go up in to the ceiling and then reappear where your speakers will live.

There are now though a number of systems that allow you to wirelesses attach your rear speakers to your amp. In most cases the back speakers are connected together with a wire, but nevertheless this does solve the problem of having wire trailing around the room. You may ask why the speakers can't be wireless all together? The speaker requires an amplified signal to play sound and this means that it needs power, there are battery powered speakers on the market but the truth is that these are hopelessly under-powered or there batteries need replacing frequently. When taking in to account the lifetime cost of the batteries you may well have been better of paying a professional to hide the cables in the first place.

If you already have your own rear speakers then there is no need to but a wireless home cinema kit. There are retro-fit kits available that will enable you to have wireless rear speakers using your existing ones.

So the reality is that the true wireless (put a speaker any where you want regardless of power sources) is still not really possible, to the true audiophile the sound quality will be greatly impaired. The technology is getting there and in a couple of years I believe it will be a possibility. In truth 'wireless' really mean no connection between front and rear speakers and to many people this will be sufficient.

This article on wireless surround sound provides further information. If you don't think wireless audio is for you, you may like to see the cable tidy page.

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KEF HTB2SE-W Wireless Subwoofer (Gloss Black)

KEF HTB2SE-W Wireless Subwoofer (Gloss Black)

Product Features

• With SmartBassTM functionality, your system will be operational in minutes
• KEF"s advanced signal transmission and processing technologies eliminate unwanted interference from other electronics
• can be placed horizontally or vertically

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Finding the Best Wireless Speakers For Entertainment at Home

Wireless speakers are something that many geeks have wanted for countless years. We can all relate to the irritation of tangled wires or cables that aren't quite long enough to reach where you want them to go, and in recent years there has been a marked increase in the sophistication and the popularity of wireless speakers.

They're one of the most useful aspects of the constant upsurge in gadgets being turned wireless, as they allow you to position your speakers around the home in whatever place you choose, and as long as the signal is on and remains strong, you can enjoy music from anywhere.

Wireless speakers are also a great boon for your home cinema setup, enabling you to place speakers around you for full digital surround sound without having all the fuss of the wired version. The same goes for gamers, as these speakers are also a big draw for video games fans who want to completely immerse themselves in the games they are playing.

Wireless speakers can really add a new dimension to your home entertainment, and help you get the most out of your HDTV, Blu Ray players and everything else that has been pushing the boundaries of digital entertainment in recent years.

There are wireless speaker kits available from all of the major manufacturers of good audio equipment, in a range of styles, sizes and outputs. Wireless gear really is making a difference to the way we use and enjoy our home leisure equipment, and you too can easily get in on the act.

Check out the reviews online and you may well discover that, thanks to the various special offers and discounts currently available on these appliances, you will be able to find great discount wireless speakers to use around your home.

Andrew is a widely read pop culture blogger, music journalist and SF author. You too can get the hi-tech gadget lifestyle you want with the best home entertainment gadgets around!

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What You Can Get With Klipsch ProMedia 2.1 Wireless Systems

In recent years, computer users are able to use Klipsch ProMedia 2.1 wireless speaker system, which has earned ratings among the best in the industry. While this wireless version is comparable to the previous model if you're thinking of top quality audio, the functionality of the wireless is somewhat limited. Continue reading this article to find out what you can get with ProMedia wireless.

Notwithstanding the functionality of this 2.1 system, you can get satellite speakers on the right and left for greater frequencies, plus a subwoofer and amplifier device for much lower frequencies. With subwoofer in sizes of 9.8 inches in width; 9.5 inches in height and 10.2 inches in depth, plus a driver which is 6.5-inch located within an enclosed port to boost bass effect.

The back of the subwoofer boast a standard terminal with spring-clip allowing you to connect to satellites; a power cable which is permanently included; a connection for pre-amp control and also a sync switch to establish the wireless connection. In addition to these features, the subwoofer also has the power switch for the system on the back, which means that you have to crawl beneath the desk to turn off the power.

All the Klipsch ProMedia 2.1 satellite speakers are roughly 8.5 inches in height, 4.2 inches in width and 5.7 inches in depth. The front of the speakers comes with 0.75 inch tweeter and 3 inch mid-range driver behind the removable plastic and mesh grill.

Basically all the satellite sits on the metallic stand which is non-adjustable and will angle the speaker a bit upwards to the ears. Keep in mind that it is possible to remove the stand if you want and replace with a wall bracket accessory to mount on the wall.

At the end of the day, you will discover that the original 2.1 speaker system will perform just as the wireless version. So, this means that you are getting an extraordinary system, particularly if you are seeking lots of bass kick and power.

Colin Scott is a Klipsch expert. For more help with finding the perfect Klipsch wireless systems visit http://www.KlipschPromedia21.com.

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Subwoofer Interconnect RCA Male to Male Cable: 12 ft - by Abacus24-7

Subwoofer Interconnect RCA Male to Male Cable: 12 ft - by Abacus24-7

Product Features

• Connect RG59U (S/PDIF) audio equipment to DVD players, receivers & more.
• Up to 60% Off Retail / OEM version
• 30 Day Money Back Guarantees

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Logitech X-540 5.1 Surround Sound Speaker System with Subwoofer

Logitech X-540 5.1 Surround Sound Speaker System with Subwoofer

Product Features

• Sold Individually

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Indoor Outdoor Wireless Speakers - 3 Perks of Indoor Outdoor Wireless Speakers

If you have read about the new craze of indoor outdoor wireless speakers you are probably wondering what all the buzz is about. Why are these speakers so popular and what can they offer in your life?

First,I will answer the why -- Indoor outdoor wireless speakers are extremely popular because they allow you to have an awesome entertainment experience without the problem of setting up wired speakers. There is no connect the blue to the red or don't or do. Please don't follow my instructions on that part. I have no idea how to set up wired speakers. Wireless speakers make people like me be able to have an awesome entertainment experience without using the brain too much.

Second,The other great feature of these speakers is their wireless feature allowing you to set your speakers up in different areas. You can set these speakers up in the range of up to 150 feet and be able to still get a clear sound from your speakers. Worried about setting something in their way? No problem. These speakers can still send their signal out through walls and whatever else you may decide to put in their way.

Third,they are also water and weather resistant. You don't have to worry about moving your speakers inside if it starts to sprinkle or even if a downpour might come. No electrocution please!

Basically these speakers will allow you to have a great entertainment experience no matter what. Some great ideas for use of your speakers --

Pool Party
Spa Party
Patio Party
Garden Party

I am sure that you will be able to think of many other great ideas and occasions to use your indoor outdoor wireless speakers. Since they are easily portable and you don't have to worry about difficulty when moving the speakers you can make them indoor speakers one day and outdoor speakers the next.

Copyright Jessica Lauren

Jessica Lauren has been researching the subject of indoor outdoor wireless speakers and you can find out more about cheap speakers at her site.

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JVC Home THBA3 280W 5.1-Inch Surround Sound System with Bar Speaker, Wireless Subwoofer and Rear Wireless Kit

JVC Home THBA3 280W 5.1-Inch Surround Sound System with Bar Speaker, Wireless Subwoofer and Rear Wireless Kit

Product Features

• The TH-BA3 is a dual wireless soundbar system. The 280-watt, 5.1-channel surround sound system includes a soundbar, wireless subwoofer and wireless rear speaker kit.

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Subwoofer For Your Home Theater Set

For some people, home entertainment is the best thing that they could have to get some refreshing at home. This is the best thing that they could have at home to get out from some routines. One of the best devices that people could use to have some home entertainment is the home theater set. This is the ultimate device that surely would add some excellent home entertainment at home. There are plenty things that we would be able to do with this kind of entertainment set. We would be able to play some music, play the DVD, and even sing some songs. We could also play some games with the giant screen. It would be better if we add sub woofer for speaker configuration it self. With this sub woofer, we would be able to get some excellent sounds from the home theater set.

By using this sub woofer complement, we would be able to have some excellent sounds of every entertainment that we have with the equipment set. There are many kinds of sub woofer for your home theater set. For some people operated home theater without the sub woofer would be such an incomplete home entertainment device. The sub woofer would deliver some excellent sound. You would have the ultra realistic sounds by using this kind of speaker. Definitely, this is the most excellent supporting device of our entertainment system.

If you want to have some excellent ambient sound environment, definitely you must add the home theater sub woofer. With the sub woofer, you would have the excellent sounds. It would help you "released" the real sounds of the movie or music composer. Definitely, you wouldn't feel the perfection of your machine set without the sub woofer. The sub woofer would release all the sounds potential of your entertainment set. With the giant screen and the excellent sounds, your home entertainments would be the perfect one for you. It is good to arrange our sub woofer position on wall.

With a wall sub woofer you can arrange your house more nice and comfortable. To find out suitable wall sub woofer range and all about sub woofer do not hesitate to visit http://www.wallsubwoofers.com

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Infinity Classia PSW310BK 10" Powered Subwoofer with Dual 10" Passive Radiators (Single, High Gloss Black)

Infinity Classia PSW310BK 10" Powered Subwoofer with Dual 10" Passive Radiators (Single, High Gloss Black)

Product Features

• 10-inch woofer is made of Ceramic Metal Matrix Diaphragm (CMMD®)
• Offers 400 Watts RMS power
• Contemporary High-gloss black finish
• 2.4GHz RF frequency band
• Adjustable volume, phase control, crossover and ID Codes

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Wireless Headphones...The Information You Need

Wireless headphones...Have you ever had this happen to you? You're on the bus or airplane going somewhere, maybe work or to a different city for business. You're using your canalphones and someone sitting next to you gets up, catches on the sound cord...and bingo! Broken set of earbuds. Kind of ruins your whole day.

This isn't the first time that cords have become entangled and useless. That's why they (the cordless) are so good. Many companies make these "latest in technology" cans. Check out some of the best names in manufacturing, including Sennheiser, Shure, and Koss to see quality phones in action.

These things have come a long way! I remember in the 70's when they had a radio built right in (with a giant antenna) and took three and more batteries. As you can imagine, those latest in modern technology devices looked more like something from a bad science fiction move! Today, they can be barely noticeable. If the person uses the earbud or canalbud style, you can't even tell that they're listening to the Super Bowl (although that might explain why they're dancing around like maniacs).

The best in audio! So, what's good about wireless headphones? They are great when driving. If you're driving down the highway and you get a call on your bluetooth, having a hands-free option so you can pay attention to where you're driving is a very good idea. These are increasing in popularity and you can sometimes see people walking around with small metallic devices on their ear. These hook over the ear and a small microphone reaches to their cheek, which can pick up their conversation. They are also useful in an office setting where the office clerk has to walk around (perhaps delivering the mail) while still being able to answer the phone.

Although many advancements are being made in the headphone industry, if you choose a fairly basic model at this point; they may not be completely appropriate for your sound quality... just yet. For the geek who loves to listen to music and tries to attain a near theatre quality sound, a higher end quality headphone is one of the many quality options available, and well worth the price.

This will change in the near future when the prices come down somewhat, but it may not be there just yet for the true music believer. For the rest of us, they are just the perfect combination of convenience and quality to hear the sounds we want to hear. One more thing: Its important to remember to keep the volume down a little on your wireless headphones and save your hearing! You'll be very grateful later in life.

Are you looking for listening pleasure? Headphone Warehouse.com sells only the highest rated and best cans available today. From wireless to noise cancelling and studio phones, they have the one you are looking for.

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About Satellite Speakers

The development of satellite speakers was due to awareness of the greater part of frequencies. These frequencies that people's ears recognize as sound do not require a large deal of air displacement just to generate sound waves. Thus, most sound information can not be created from small speaker boxes.

Another aspect that these speakers have is the dedicated subwoofer. Low frequencies have to shift lots of air just to be heard. They require a larger box in this matter.

Power ratings, accurate reproduction and efficiency of the audio band are the fundamentals which can determine the performance of quality preachers. Efficiency refers to the loudness of the speaker at a distance of one meter and a power of one watt. Power rating is the ohm rating of the speaker. 20-20,000 Hertz is the melodic frequency range for human ears. Satellite speakers often replicate nothing less than 200 Hz, the mid-bass area.

Companies dealing with speakers introduce these types of speakers as a notion with the Acoutimass speaker developed in 1986. This was the first system that uses tiny cube speakers in order to deliver the musical frequency delivery. The speaker also provides more options in room placement that would not be possible with bigger speakers.

The introduction of home theaters affected the demand for speakers. The effort to reproduce movie theater experiences also gave way to further advancements in technology. Creating a sound place that matches the theater became very important to everyone.

Computers have become increasingly used on entertainment centers. Their footprints are generally smaller. Satellite and subwoofers combined aurally and cosmetically serve the density of most computers. Since computers are able to process sounds, they became a substitute surround sound processor to a disconnected surround sound receiver. The same character in between the speakers is also important for gaming experience.

Voice-matching have similar sonic quality among all speaker systems. This became the key to useful home theater sounds. If the speakers do not create the same harmonic characteristics and tonal quality, the sound field could be unreal and jarring. There should be hidden audio transitions from ever speaker. These speakers are normally part of the whole speaker system so they generate a faultless audio stage.

These speakers can be installed easily. They can be placed anywhere you want and the sound would not be affected. These speakers are wireless and can be charged using an AC current or a battery.

Satellite speakers are beneficial in a lot of ways. It does not only offer the best sound but also portability and style. These speakers might work best for your musical taste. You can also look for other wireless speaker system options if you want to compare quality and prices.

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Yamaha NS-SP1800BL 5.1-Channel Home Theater Speaker Package

Yamaha NS-SP1800BL 5.1-Channel Home Theater Speaker Package

Product Features

• 2-way satellite speakers with 2.5" woofer & 1/2" tweeter
• 2-way center speaker with dual 2.5" woofers & 1/2" tweeter
• Magnetic shielding (all speakers)
• 8" 100W cube-type high power subwoofer
• Wall hanging capability

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Sennheiser RS 130 Wireless Surround Sound Headphones Review

Watching TV without disturbing others is a big problem for me. I like to watch TV in bed and my wife always complains about the noise and we end up having arguments over it. This is why I started looking for some headphones to use while watching TV. I came across these wireless headphones that are very affordable and now I don't watch TV with anything other than a pair of Sennheiser RS 130 Wireless Surround Sound Headphones. If you are somebody who really likes having an amazing acoustic experience while watching TV, then you really need to check out this product.

We sometimes hear people talk about the fact that virtually all headphones are the same. They make the argument that it doesn't really make any sense to go out of your way to purchase a high quality pair of headphones because you will not really get any better quality out of them. Nothing could be further from the truth. I am somebody who has experimented with a wide variety of headphones. Forget about the little earbuds that typically come packaged with your TV - they really don't work. Well, they work, but once you try on a pair of Sennheiser RS 130 Wireless Surround Sound Headphones you will never want to go back to using anything else.

The Rs 130 base transmits radio frequencies on three different channels so as to avoid interference. This can transmit through walls and has a fairly large wireless range.

The headphones don't need to be plugged in to be charged all you need to do is hang it up on the base station for it to charge. The headphones are powered by thriple A batteries. The batteries last about 22 hours after you charge them. Please note these headphones are open backed so if you have someone sitting right next to you they will be able to hear some of the sound. But this open backed design helps a lot with sound quality as the diaphragm has less resistance and can move back and forth quite freely. Audio is crisp and clear and for the very cheap cost of these headphones is more than reasonable.

The padded ear pieces are very comfortable and fits around the ear comfortably.

These headphones have an auto power switch which switches the system off when no sound output is received for 1 minute. This takes about 3 seconds to reconnect and you will miss the audio in that time. So if you are listening to something important it will be quite annoying to miss it. But this feature helps save battery power.

When watching movies and for playing games you can turn on the surround sound feature and the surround sound effects are pretty impressive. Even though this is not true surround sound, for such a cheap set of headphones, it is truly exceptional. The only real fault I could find with these is that the open backed feature of the head sets doesn't allow for quiet listening. Anyone sitting close to you will be able to hear what you are listening to. But this is quiet enough for my wife to sleep through it.

I highly recommend buying a pair of these headphones online. It will save you from having to travel to a store. If you happen to be a busy professional, then you know how difficult it can sometimes be to find the time to go to the stores anyway. You really won't regret your decision, and I think at the end of the day, you will probably end up telling all of your friends that they need to go out and buy a pair of Sennheiser RS 130 Wireless Surround Sound Headphones too!

For more information visit this blog that is dedicated to helping you find the correct Wireless TV Headphones for your needs. The best most popular Surround Sound Wireless Headphones on the market have been reviewed here for you.

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CCTV Cameras

Closed Circuit Televisions (CCTV) have come a long way from their early conception. What started out as a crude device, the CCTV camera has evolved into an innovative piece of technology used to clarify visual mysteries that are undetected by the naked eyes. The first CCTV devices were manufactured with black and white television sets that were connected to a monitor through a physical cable. At that time, the most advanced version of CCTV was either a collection of cameras attached to a switch that allowed you to traverse from one view to another, or a view using multiple cameras at one time.

Nowadays, there are a variety of CCTV devices to choose from. Many are still wired, but the camera device itself has improved greatly. Not only can you find cameras that have high powered zooming, you can also find devices that allow panoramic views of any given area. CCTV cameras are no longer obvious. With the addition of wireless technology, and camera devices becoming more miniscule in size, you can purchase one and install it indoors or outside of your home as a security system. There are also pinhole lenses, ceiling mount smoke alarm color cameras and door view cameras available for home use.

Dome type cameras are also used in public places. With the rise of terrorist attacks after the September 11, installation of these cameras in public places has become more important than ever. Cameras equipped with high-powered zooming capabilities attached to a powerful computer with state of the art software, can trace the movement of suspects and recognize facial patterns and behavioral movements.

CCTV provides detailed information on CCTV, CCTV Cameras, CCTV Systems, CCTV Surveillance Systems and more. CCTV is affiliated with Wireless Internet Security [http://www.e-WirelessSecurity.com].

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JBL Creature III Self-Powered Multimedia satellite and subwoofer system

JBL Creature III Self-Powered Multimedia satellite and subwoofer system

Product Features

• Powered satellite speakers and subwoofer
• Touch-volume and mute controls on satellite
• Bass and treble control on satellite
• Subwoofer (W x H): 9" x 9" (230mm x 230mm)
• Satellite (W x H): 3" x 3" (75mm x 75mm)

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The Wireless Headphone Necessity

Deciding to have a DVD player installed in your vehicle can be very entertaining for your passengers, and it could also boost the resell price of your vehicle as well. Having wireless headphones to be used while the movies are playing is a great way to block out the noise of cartoons that your children may be watching. I will love the quietness you not only get from the video player, but also the quietness you get from the entertained passengers. They can really be a life saver during long distance out of state trips, or for across town trips that can seem to take eternity.

There are multiple varieties of video systems and wireless headphones that are available on the market for consumers to choose from. The many name brands out there are Boss, Coby, Toshiba, and Sony. If you would like to experience the wireless headphone feature, then I would advise any consumer to purchase systems that are equipped with AV inputs, dome lights, and not to mention a transmitter so that you can actually use you wireless headphones with you video player. Beware of DVD players that may have a good price tag, but are not equipped with transmitters for the headphone experience.

The first thing any consumer should is find out what kind of DVD player they desire and does that certain it come with transmitters for your headphones. Don't assume that all video systems are equal. If you make this assumption, then you will find yourself trying to hear a movie with your headphones and there is no sound coming from them. Assuming that your vehicle's video player automatically transmits to wireless headphones would be a big mistake. If you have happened to purchase a DVD player that doesn't transmit the audio to the headphones, then you can always purchase a FM transmitter feature for your DVD player.

If you would like to avoid the unnecessary purchase of a transmitter to go with your DVD player, then you should look for the transmitting feature for the DVD player before purchasing. If you own a vehicle that has a DVD player already installed, but it doesn't have the transmitter feature, the inevitably you will have to purchase the FM transmitter in order to use the wireless headphone system. Once this situation has been taken care of, then you are free to enjoy the ultra high quality of sound that emits from the wireless headphone experience.

Any and all passengers that ride in your vehicle will enjoy the benefit of the mobile headphone system that is integrated within your DVD player system. Children of all ages will also enjoy listening and seeing their favorite movies while riding with parents. Parents would definitely enjoy the benefit of the wireless headphone system, because they can listen to their music of choice, while the children are independently and quietly being entertained by the DVD system. It the ideal luxury experience for traveling families.

Visit Our Website For Wireless Headphones For Car, Truck, SUV And RVs

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The Problem With Wireless For Surround Sound

We all hate cables running all over the floor, especially when they are not easily hidden. We just invested in a top-notch home theater system. We have a great video monitor, an audiophile quality home theater receiver, and some great speakers. So far, so good. Now it's time to connect the rear channel surround speakers. Agh! Our system look was just degraded from Star Trek to Mad Max. This is an obvious application for wireless, right?

Actually, there are some serious problems with using wireless techniques for surround sound channels.

Time Lag:

Wireless surround systems have a processing/transmission time lag that makes the sound from the rear channels out of sync with the audio from the front speakers. The inherent time required to generate the signal, transmit it to the speaker, decode the signal, and finally, to amplify the signal for the speaker causes the time offset. Minimal audio processing latency is required for effective surround sound.

The sound from the different speakers should be heard at the same instant. For most installations, the rear channels are closer to the listener than the front channels. For this reason, Dolby Digital and Dolby Surround Pro Logic systems apply a delay of a few milliseconds for the surround sound channels. The timing is that critical.

When humans hear the same sound from different directions, the illusion is created that the sound's source is a phantom location between the sound's sources. Recording engineers use balance controls to simulate sounds across the sound field, allowing them to locate sounds to different perceived locations across the sound stage. Timing is critical between surround channels where depth and location information are to be determined by the ears, and ultimately, by the brain.

Interference:

The second problem with wireless surround systems is interference. There are multiple technologies used for wireless surround, and the source of interference is specific to the technology.

Both Bluetooth and Wi-Fi devices operate within the 2.4 GHz band. Bluetooth is the technology that is used frequently for wireless keyboards and mice, but the capability of Bluetooth systems is marginal for surround sound applications. A Bluetooth signal power is only about 1 milliwatt. Dolby Digital requires a bandwidth of about 400 Kbps and Dolby DTS uses a bandwidth of about 450 Kbps for a 5.1 system. Bluetooth has a maximum data transfer rate of 433 Kbps, which is cutting it pretty close.

Another alternative for surround sound transmission is Wi-Fi 802.11b (also in the 2.4 GHz band, as is 802.11g ). An 802.11b signal is capable of 54 Mbps maximum throughput (30 Mbps in practice), which is more than sufficient for this application.

However, there are significant sources of interference in this 2.4 GHz spectrum from cordless phones, other Wi-Fi equipment like wireless-enabled laptops, wireless game controllers, fluorescent lights, and even microwave ovens. Even bad electrical connections can cause broad Rf spectrum emissions.

Bluetooth attempts to avoid interference by "frequency-hopping". If the signal is receiving interference, it will (hopefully) only be for a fraction of a second, because the system will identify the interference, and switch to a different frequency. Wi-Fi also has the ability to avoid interference by changing channels, and by redundant loops of information transmission Many Wi-Fi products claim to mange interference problems. Unfortunately, the products are limited by the capabilities of the 802.11 chipsets, and the 802.11 protocol itself.

IR (infrared), which is most often used by remote controls, is yet another technology sometimes used for wireless surround. IR has a bandwidth capability of more than 100 Mbps. IR for data transmission was popular on laptop computers a few years ago. More recently, it has been replaced by other wireless technologies such as Bluetooth, because they don't need a direct line of sight (LOS). IR transmission is lost whenever there is a loss of LOS between the transmitter and the receiver, and, in addition, the signal is subject to interference from IR remote controls and ambient light.

Power:

A third problem is that the rear speakers will require a power source if they are receiving the signals wirelessly. They will need power not only for the actual speakers, but they will also need power for an on-board amplifier. If our goal is to eliminate all wires, this is a problem. Powercast (Pittsburgh, PA) has a technology that will wirelessly supply power to small appliances like cell phones, but the maximum rate is 10-15 watts, not enough for surround channels.

On a final note, if you decide to purchase a wireless surround system, read the product attributes carefully. I recently assisted on an installation where a DVD/Receiver system was bought with wireless capability. However, in this case, the wireless capability was for distribution to a second room for the primary channels, not a wireless capability for surround channels.

About the Author: Brian Bradshaw is a Certified Technical Specialist (InfoComm CTS) and a CompTIA A+ computer technologist. Areas of expertise include Audio-Video, Information Technology, Wi-Fi, HDTV, SATCOM Systems, and Communications. He has a communications technology business that serves the Southwestern United States with offices in Plano, Texas (Dallas) and an office in Peoria, Arizona (Phoenix), managed by his brother, Keller Bradshaw.

Please visit the Website for more information.

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Miller & Kreisel VX 1250 SFX Subwoofer Review

Miller & Kreisel VX 1250 SFX Subwoofer Feature

• Superfast THX
• Internal Powered Amplifier
• 250 Watts RMS
• 12 " Driver

Miller & Kreisel VX 1250 SFX Subwoofer Overview

M&K Subwoofer - VX1250SFXBK This high-performance powered subwoofer lets you experience the reference-quality sound thathas made M&K the choice of professionals. The VX-1250 has the incredibly powerful and dynamicoutput, articulation, low distortion, and "quick" sound that have made M&K the standard in subwoofers.This subwoofer is the ideal foundation of any home theatre.M&K's DEEP BASS CONFIGURATION - The VX-1250's Deep Bass sealed-box design produces deepin-room bass to below 20 Hz with excellent transient response, unlike the many subwoofers that usevented cabinets or passive radiators. Comparable vented subs have an extremely sharp roll-off thatstarts closer to 40 Hz, along with poor transient response, giving those subs a sloppy and uncontrolledsound. The VX-1250's sound has a power and authority these other subwoofers can never match.FILTERS AND CONTROLS - To facilitate connection to any system, the VX-1250 has inputs andoutputs for both line-level signals (such as from A/V receivers) and speaker level signals (from stereoreceivers). Separate controls allow you to set the bass level and the subwoofer's upper rolloff frequency(between 40 and 200Hz, with a bypass for home theater receivers).Features: ?Driver: 12" long-throw treated-paper subwoofer driver?Internal Amplifier: 250 watt continuous all-discrete power amplifier with M&K Dynamic Headroom MaximizerTM circuit?Features: Line-level and speaker level inputs and outputs?Low Pass Filter adjustable 40-200Hz?Low Pass Filter Bypass?Bass Level Control?Variable Phase Control?M&K Sealed-Box Deep Bass DesignSpecifications:?Rated Power: 250 watts RMS?Finish Options: Black with Black Cloth Grille?Frequency Response: 20Hz - 200 Hz ±3dB?Low Pass Filter: Variable 40Hz-200Hz with Bypass?Phase: 0°-180° Variable

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Check Out QES-820 Orange - CDT Audio 8" Cast Audiophile Excursion Subwoofer Excursion

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QES-820 Orange - CDT Audio 8" Cast Audiophile Excursion Subwoofer Excursion Feature

• Nom. Diameter: 8 (200mm)
• Cone: Kevlar-Paper Honeycomb
• Surround: NB Rubber
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• Power Handling: 400 WRMS (800W Pk)

QES-820 Orange - CDT Audio 8" Cast Audiophile Excursion Subwoofer Excursion Overview

Being able to meet any one of the three distinct engineering challenges met by CDTAUDIO new 8" and 10" and 12 Minibox Sub drivers would be enough for most competitive models. These engineering masterpieces simultaneously deal with the need to move large amounts of air necessary to overcome the 70+ db. of bass masking road noise in the moving automotive interior, while accurately responding to the delicate changes in the harmonic structure of the music.

Features:
* Nom. Diameter: 8 (200mm) * Cone: Kevlar-Paper Honeycomb * Surround: NB Rubber * Sensitivity: 82 dB * Power Handling: 400 WRMS (800W Pk) * Frequency Response: 10 ~ 400 Hz * Nominal Impedance: 4 Ohms * Voice Coil Diameter: 2.0 (50mm) * Xmax: 11mm * Magnet Weight: 84 Oz stacked

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Polk Audio PSWi225 Wireless Subwoofer

Polk Audio PSWi225 Wireless Subwoofer

I was looking for a wireless sub to complement a 32" Sony XBR LCD TV that has 5.1 surround bar and a small built-in subwoofer at the back on the LCD panel. Since this TV is in a bedroom I don't have enough space to add external speakers or any other audio components, which is why I paid a premium to get the built-in 5.1.

When I saw this wireless sub at $208 on Amazon, it was worth trying so I ordered it and received it in less than a week. Took me 5 mins to plug in and VOW, what a difference it made! The wireless transmitter has Audio-L & R ports that are connected to the Audio out of my TV. It also has a LFE input to connect directly to the sub woofer output of an amp. I'm blown away by the quality of this product and the ease of use. Now I'm so used to this thing that if I turn it off, the built-in 5.1 TV speakers that used to sound pretty good, feel like tin-can speakers. I am extremely happy with this product (at this price point) and am thinking of adding another one to complement two 8" ceiling speakers in my family room. I highly recommend it to anyone who wants to add that extra touch of bass to an existing TV or iPod dock or any speakers that lack the bass. I hope the $208 price stays the same for a while or even drops further.

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Yamaha YST-SW216BL Advanced YST II Front-Firing Active Subwoofer Review

Very nice sub for a non-audiophile. This thing is sleek looking and is a breeze to set up. The only con I have is that it has trouble keeping up with a powerful system. Mine developed a slight rattle when hitting the base to hard but I probably just punched a sub of this price a little hard!

I would buy it again.

Yamaha YST-SW216BL Advanced YST II Front-Firing Active Subwoofer Feature

• High 100W dynamic power
• 10 long-stroke cone driver with magnetic shielding
• Front-firing active woofer
• Selectable high-cut filter
• 25-180Hz low frequency response

Yamaha YST-SW216BL Advanced YST II Front-Firing Active Subwoofer Overview

The Yamaha YST-SW216BL Advanced YST II, Front-Firing Active Subwoofer sets the standard for subwoofers in this class with high dynamic power and low-noise performance thanks to Advanced YST II, a linear port, front-firing design, plus many other sophisticated features.

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Customer Reviews

Great litle sub - T. McPhetrige - Texas
This is a great sub and a great value for the price. I have the sub hooked to my Panasonic 5.1 system in my shop and it sounds really nice. I also play my ipod thru the amp and the sub really compliments the music. I am well satisfied with the Yamaha subwoofer and I believe you will be satisfied as well.



Great subwoofer for the price - Santie - DC

I already had a subwoofer that was detoriarating in sound output and I got this. This is not the top of the line but performs satisfactorily in my basement theater. The walls reverberate with deep sounds and is great of 3D action. I am glad that I didn't have to spend 100s of dollars to get the effect.



Horrible sub for music way to MUDDY - sasquisha -
I bought this sub because of all the reviews but when i got it and plugged it in its sounds like a piece of crap. The bass is wayyyy to muddy. If you like deep bass in your music this sub is NOT for you. It looks like a well be selling this sub

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Wireless Surround Sound System

A wireless surround sound system in your home can make it more exciting and more fun. However, selecting the best system from a wide variety of brands can be a very difficult task to do. You will definitely want the perfect audio that can give you your money's worth.

Wireless surround sound systems are usually 5.1. Now, you might ask what 5.1 means. The figure pertains to the number of speakers present in your system. A 5.1 has one speaker at the center, one at the front left, another one at the front right, and two more for the rear left and rear right respectively. The .1 pertains to the subwoofer that plays sounds with low frequencies. Although the 5.1 sound systems are the most common, you might also try to look at the 6.1 and 7.1 systems if you prefer more speakers.

A wireless surround sound system is not really wireless. There are still cables so that you can plug it into the electric outlet. A completely wireless technology is still in the works and further research and studies about it are still needed. Manufacturers of these gadgets use infrared or radio waves to transmit signals. It is usually the rear speakers which use this kind of technology while the front speakers are wired to the others. There are also battery operated surround sound systems but their audio quality is inferior to the ones that are run by electricity.

Although this system is not totally wire free, it is still more convenient to use than a traditional sound system. The latter is harder to set up and the presence of lots of wires might cause you to trip or get your foot entangled to them. The wireless surround sound system has a more organized look and is perfect to be a part of your home theater system.

When looking for a Wireless Surround Sound System be sure to list your requirements and check out these systems.

Although this system is not totally wire free, it is still more convenient to use than a traditional sound system. The latter is harder to set up and the presence of lots of wires might cause you to trip or get your foot entangled to them. The wireless surround sound system has a more organized look and is perfect to be a part of your home theater system.

Learn More about Speakers

For information of all types of surround sound systems like the 5.1 surround sound system come to cheapwirelessspeakers.org

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