Apr 142012

The newest series of wireless music kits promises streaming of music throughout the home without limits. We will research if these newest products are suitable for whole-house audio. Also, we will give vital tips for selecting a wireless audio system.

If your house is not wired for audio then you face quite a challenge when you want to get your music from your living room to your bedroom. Frequently the audio source cannot be moved. Running speaker wires between rooms will be expensive and as a result many people are searching for alternatives. Products which resolve this problem are usually based on the following technologies: infrared wireless, RF wireless, wireless LAN or powerline.

Infrared wireless audio devices are limited to line-of-sight applications, i.e. only operate within a single room since the signal is broadcast as infrared light which can’t penetrate walls. This technology is often found in wireless speaker kit product versions.

RF wireless products will broadcast the signal as RF waves. These waves can easily penetrate walls. RF wireless audio devices either utilize FM transmission or digital audio transmission. The least expensive choice is FM transmission. Products using FM transmission, however, have a series of drawbacks. These include degradation of the audio quality due to static or hiss and audio distortion. In addition, FM transmitter products are also quite susceptible to interference from other wireless transmitters.

Digital wireless audio transmitter devices, such as products from Amphony, utilize a digital protocol. The audio is first converted to digital data before being broadcast. This method guarantees that the audio quality is entirely maintained. Some transmitters use some type of audio compression, such as Bluetooth transmitters, which will degrade the audio to some degree. Transmitters which send the audio data uncompressed will attain the highest fidelity.

Wireless LAN (WLAN) products are practical when streaming from a PC but will add some amount of latency or delay to the signal because wireless LAN was not originally designed for real-time audio streaming. WLAN receivers usually require buying a separate LAN card to be plugged into each receiver.

Powerline products broadcast the audio via the power mains and offer great range. They run into trouble in houses where there are individual mains circuits in terms of being able to cross over into another circuit. Powerline products have another problem in the form of power surges and spikes which can cause transmission errors. To prevent audio dropouts, these products will commonly have an audio latency of several seconds as a safeguard.

Now we’ll give you some suggestions for shopping for a wireless system: Go for a system that supports multiple wireless receivers if you plan to stream audio to several rooms so that you don’t have to purchase a separate transmitter for each receiver. Some devices have some sort of error correction built in which will help guard against dropouts in case of strong wireless interference. Pick a digital RF audio transmitter to make sure that the audio quality is preserved. Make sure the audio latency is less than 10 ms if you have a real-time application such as video.

Make sure the wireless transmitter offers the audio inputs you require. You may need amplified speaker inputs, RCA audio inputs etc. Make sure that you can purchase additional receivers later on as you expand your system. Check that you can get receivers with speaker outputs for connecting regular loudspeakers as well as receivers with line-level RCA outputs. If you go with a digital audio transmitter, choose one with an input audio level control knob to prevent the music signal from clipping inside the transmitter audio converter. This will guarantee optimum dynamic range regardless of the signal level of your equipment.

Ensure that the amplified wireless receivers have built-in digital amplifiers with low distortion figures. This will keep the receiver cool due to high amplifier power efficiency and offer optimum sound quality. Pick a system which offers receivers that can drive speakers with the preferred Ohm rating. Make sure the receivers have a small form factor and are easily mountable. This will help during the installation. Devices using the less crowded 5.8 GHz frequency band will commonly have less trouble with wireless interference than 900 MHz or 2.4 GHz devices.

You can find additional information about bluetooth audio transmitter models as well as other wireless audio versions from Amphony’s web site.

Apr 122012

This overview of modern headphones will help you select the perfect one from the overwhelming flood of types and models of corded and wireless tv headphones.

Headphones are available in numerous separate types. Regarding design, the smallest type headphones are in-ear headphones which are plugged into the ear, some of these include a bracket that wraps around the ear. These in-ear headphones are often bundled with iPods and other MP3 players and can simply be placed in a pocket. The next size up are lightweight headphones that sit on the ear and are connected by an elastic frame. This headpiece either sits on top of the head or wraps around the neck. These two types of headphones are typically the least expensive and you should consider them if you are on a budget. Some in-ear models are particularly designed to absorb exterior noise.

If you are looking for better sound quality then you should take a look at medium-end headphones which have soft ear cushions that depending on the model will be placed either on your ear or around your ear. The second type lowers the pressure on the ear. Consequently many people favor this design. Next you will have to make a decision if you want to go with an open design where the audio can penetrate from the transducer to the exterior or a closed design. While a number of people feel that an open design sounds light, a closed design will tend to absorb exterior noise more and offer improved insulation between the two earpieces.

The majority of today’s headphones are dynamic which refers to the kind of transducer that is used. Static headphones are the next type. This type is fairly expensive but offers high sound quality. Static headphones need a special headphone amplifier.

Wireless headphones are another choice which cut the headphone cable. One alternative to think about are Bluetooth headphones. Bluetooth headphones are a sort of cordless headphones which are designed for Bluetooth-enabled devices. Such devices include cell phones. The range of Bluetooth headphones is usually less than 30 ft and the sound quality does not rival the quality of corded headphones.

Other wireless headphones include inexpensive 900 MHz types which use FM transmission and more advanced digital wireless headphones which work at 2.4 GHz or 5.8 GHz. FM wireless headphones have noticeable hissing and audio distortion. They are also prone to interference from other wireless products.

Digital product models will encode the audio into data prior to transmission which makes these models the best choice in terms of sound quality and robustness against interference. Digital wireless headphones which work at the less crowded 5.8 GHz frequency band have less problems with competing wireless products than headphones working at 2.4 GHz.

You can get further details regarding wireless bluetooth headphones as well as other headphone product models at Amphony’s web page.

Apr 092012

Whilst shopping for outdoor cordless speakers, there are many things to watch out for to stay away from unwelcome surprises as well as to make sure that you are getting the best bang for the buck. I will provide various rules to abide by whilst selecting the ideal loudspeaker.

Running the cords to install a new pair of loudspeakers is regularly a hassle. If your house is not prewired for audio you may end up drilling holes and doing a big cabling project. Wireless loudspeakers pledge to get rid of the loudspeaker wires. Wireless speakers need power to drive the speaker elements and commonly come with a power cord which needs to be plugged into an outlet. Some loudspeakers have rechargeable batteries. The advantage is that those can be located anywhere even in spaces without a power outlet. Though, recharging batteries can be a hassle as well as replacing these since batteries age.

The next thing to look at is the speaker structure as well as output power. If you are planning to set up the speaker in your kitchen, you apparently will not need as much power as setting up a set of loudspeakers as wireless surround sound speakers in your home theater. It is also essential to ponder the sort of material of the speaker housing. If you are preparing to employ the speakers outdoors, ensure that you select loudspeakers with a rainproof housing. The material would in most instances by some type of plastic. Be sure to check with the manufacturer to make certain the speaker which you are planning to acquire is suitable for outdoor use.

Next, be sure the transmitter offers the correct audio inputs for your audio equipment. Firstly check what type of audio outputs are accessible. Then check that your transmitter can attach properly. Obviously if the transmitter offers more than just one type of input, you am going to have greater flexibility just in case your audio equipment changes down the road. If you wish to connect your transmitter to your surround system, you might require speaker terminal inputs unless your surround equipment provides line level audio for your rear speakers. While nearly every transmitter has a standard line-level audio input, some also contain an iPod cradle which also allows an iPhone to be plugged into. A number of transmitters offer an audio input with a volume control. This permits the transmitter to adjust to virtually any audio device, regardless of the audio output level.

Whilst historically cordless product types would utilize analog audio transmission, usually at 900 MHz, the most modern generation uses digital audio transmission at 2.4 GHz or 5.8 GHz and eliminate audio distortion and noise. Nowadays there are more and more wireless devices out there. Thus it is vital to pick a set of loudspeakers that is robust against interference from other cordless gadgets.

It is best to do a listening test regardless of whether you are buying a couple of regular or wireless speakers. On the other hand, rather than buying a new set of loudspeakers, one more alternative is to go with a wireless loudspeaker kit and make your existing loudspeakers wireless by connecting a cordless receiver unit to every speaker.

You can find further details about outdoor cordless speakers as well as other amplifier product types at Amphony’s website.

Apr 062012

Setting up multi-channel audio such as a home theater system has always been relatively difficult and manufacturers lately have developed unique products and technologies including wireless surround sound systems products or virtual surround sound to help simplify this procedure. I will look at several of the most recent technologies that were designed to make setting up home theater systems a breeze. I will highlight what to look out for when making your buying decision.

Most of modern TVs will be installed as a multi-channel audio system. As traditionally TVs would contain built-in stereo speakers, these days a number of external loudspeakers are used to allow the viewer experience surround sound. The most commonly used 5.1 surround sound format requires setting up a total of 6 loudspeakers. These are one center speaker, two front side speakers, two rear speakers and a subwoofer. The more recent 7.1 standard increases this number to 8 by adding two additional side speakers.

As a result the setup of home theater kits has turn out to be a fairly complicated process. Numerous houses are not pre-wired for surround sound. Moreover, long speaker cables are often unattractive. A number of technologies have emerged to simplify this procedure.

The first method is named virtual surround sound. This solution will take the audio components which would ordinarily be broadcast by the remote loudspeakers. It then applies signal processing to those components and inserts special cues and phase delays. Then these components are mixed with the front speaker audio. The audio is next sent by the front loudspeakers together with the front speaker audio components. The signal processing is modeled after the human hearing. It uses the information about how the human ear can determine the origin of sound. Because of the signal processing, the viewer is deceived into thinking the sound is coming from virtual remote surround speakers.

Virtual surround eliminates the remote speakers and simplifies the setup and also eliminates long speaker wire runs. Then again, it also has a downside. The form of each human’s ear is somewhat dissimilar. As a result everybody processes sound differently. The signal processing is based on measurements which are done using a standard human ear model. If the form of the ear changes, sound will travel differently. As a result virtual surround will not function equally well for everyone.

Wireless surround sound products are one more approach for simplifying home speaker installations and normally include a transmitter component which connects to the source in addition to wireless amplifiers which will connect to the remote loudspeakers. The transmitter will normally come with amplified speaker inputs along with line-level inputs and come with a volume control to adjust it to the source audio level.

A number of wireless speaker devices are designed to connect 2 loudspeakers per wireless amplifier. A better solution would come with a wireless amplifier for each remote speaker to eliminate the cord runs between each of the 2 remote loudspeakers. The most advanced wireless systems utilize digital transmission to avoid signal degradation. Make sure that you choose a wireless system with a low audio latency, at most a few milliseconds. This will guarantee that the audio from all loudspeakers, including the non-wireless speakers, is in sync. Low latency is also vital for good sync with the video. A large latency would lead to an echo effect. This effect would degrade the surround effect. Many wireless gadgets operate in the 900 MHz and 2.4 GHz frequency bands. Some products utilize the less crowded 5.8 GHz frequency band and consequently have less competition from other wireless gadgets.

Another option are side-reflecting loudspeakers. These models are also named sound bars. There are extra loudspeakers positioned at the front which broadcast the sound for the remote speakers from the front at an angle. The audio is then reflected by walls and seems to be coming from besides or behind the viewer. The effect heavily is dependent upon the interior, particularly the shape of the room and the decoration. It will work well for square rooms with no obstacles and sound reflecting walls. However, realistic scenarios often will differ from this ideal and reduce the effect of this approach.

You can find additional details regarding 5.1 wireless surround sound kits as well as other surround sound types at Amphony’s website.

Mar 302012

Latest models of audio amplifiers (http://www.amphony.com/products/audio-amplifier.htm prove that audio technology has gone the same course as computer technology and cell phones. While the features are growing, the size of today’s consumer products is becoming smaller and smaller. In the past, tube amps would be commonplace and take up a large part of the living room. Tube amps still have their fair share of fanatics. Nonetheless they have been replaced by solid-state amps for the most part.

Modern solid-state amplifiers combine the traditional pre amp and power amp stages into a neat single package no larger than a DVD player. New developments in audio technology in regard to power efficiency of have allowed the development of a new generation of super-miniature audio amplifiers, such as Amphony’s microFidelity Model 200. These mini amps take up no more space than a deck of cards but deliver up to 50 Watts, which is enough to drive a speaker to high volume.

“Class-A” and “Class-AB” amplifier topologies were the two major amplifier architectures of previous audio amplifiers. These technologies have fairly low power efficiency. Only a small percentage of the consumed energy – typically in the order of 20% to 30% – is actually converted into audio by analog amplifiers. The left over portion is radiated as heat. Analog amplifiers therefore require significant cooling which is done by heat sinks that are often bulky and prevent the amplifier from being made very small.

“Class-D” amplifiers are based on a digital design which provides larger power efficiency than “Class-A” or “Class-AB” amplifiers – normally in the order of 80% to 95%. Consequently only a small portion is wasted as heat which was the key in being able to miniaturize audio amplifier designs. One main drawback of “Class-D” amplifiers is the fact that digital “Class-D” amplifiers use a switching stage at the output which creates non-linearity and therefore some amount of distortion of the audio signal. This downside has slowed the advance of digital amplifiers.

More recent “Class-T” and newer “Class-D” amplifier product types, such as Amphony’s Model 200, incorporate a feedback mechanism where the output of the amplifier is fed back to the input. This feedback allows the amplifier to compensate for nonlinearities of the output switching stage and consequently lower audio distortion to similar levels of analog amplifiers whilst preserving the audio efficiency of digital amplifiers.

These new generation miniature audio amplifiers are suited for a range of new applications where previous audio amplifiers have failed. These applications include installations, such as in-ceiling installations, with minimum space or connecting speakers to a cable box or DVD/MP3 player where minimum space is key.

You can find additional information regarding mini amplifier kits as well as other amplifier product types at Amphony’s website.

Mar 242012

If you’re planning on distributing music through your property you may be confronted with numerous difficulties. You probably do not want to start drilling openings in your partitions to add speaker cabling. I’ll look at outdoor speakers as an option to wired speakers for whole-house audio distribution.

Including sound in your retail outlet, business or maybe patio could be a smart choice for enhancing your business. Studies show that audio can easily boost morale at the office, boost profits in a retail atmosphere plus add fun to out-of-doors environments. If you don’t possess a residence prewired for audio you will face a big problem. Adding the wires to every one of the rooms might be a big headache.

If you plan on incorporating music outside, among the list of concerns is ensuring that your speakers together with your amplifiers can stand up to bad weather as well as exposure to the sun. Hence choosing loudspeakers that are weather resistant is important. It’s the same for your equipment which distributes the sound. Whenever you select the amps for your loudspeakers, there is a choice of employing a main amp that links to all of your loudspeakers or distributed amplifiers.

Employing distributed small-form-factor amplifier products gives you the benefit of not having to run thick speaker cable to all of your speakers. This also gets rid of troubles with hum feeding into the speaker wire. Furthermore, it is much easier to adjust the volume level of each individual speaker based on the requirements of each area.

If you do not wish to run a great deal of loudspeaker wire you definitely need to look at cordless loudspeakers. Cordless loudspeakers come with a transmitter which is usually paired with the loudspeakers either by having switchable channels or using a pairing button.

Digital wireless loudspeakers offer much better music fidelity along with dependability as compared to analog 900 MHz type speakers. In order to cover a sizable area then you need to make certain that the transmitter working range is large enough and also understand that wall surfaces can shorten the range. Additionally, there will very likely be interference from other wireless gadgets like wireless telephones or wireless networks. Advanced loudspeakers are able to deal with this kind of interference by making use of innovative algorithms like error correction. This will likely assure error-free reception.

While you set up cordless loudspeakers out of doors the integrated amp really should have fairly high power level. The reason is , there typically exists lots of background noises originating from traffic, the wind and other sources. In addition, music dissipates freely and therefore attaining the exact same sound pressure level out of doors is far more complicated in the open air than in the house. Moreover, be sure the speaker is safe from nature’s elements. A number of cordless speakers such as Bluetooth loudspeakers make use of audio compression in order to reduce the amount of data being transmitted. Audio compression is going to lower the audio fidelity to some degree however. Furthermore, in case your speakers work with video then be sure that the latency of the transmission is low enough to preserve sync of the audio with the video.

No matter whether you decide to go wireless or wired, choose your speakers by giving them a listening test inside an environment which comes close in dimensions and surroundings as the place in which you plan to set up your loudspeakers. Pursuing the other recommendations should make your setup a snap.

You can get further information about wireless speakers as well as amplifier products at Amphony’s website.

Mar 062012

Picking out the ideal set of wireless speaker products is often tricky. Open-air applications present a few challenges for speakers. I am going to provide some advice in selecting the appropriate loudspeaker model.

There are many outdoor loudspeaker models out there. Every type has its own pros and cons. Open-air applications naturally present a number of difficulties for speakers.

The first thing to look at is the speaker enclosure. Typically speakers are produced from MDF material. MDF material can not endure bad weather and for that reason you’ll need to get speakers having an alternate material, just like plastic material. If you’re planning on installing the loudspeaker where it encounters sunshine then you may wish to opt for a type that features a Ultra-violet resistive coating to stop discoloration after a while. There are also other factors to take into consideration when deciding on your loudspeaker. Clearly appearance and quality of sound are very important. Yet, also take a look at loudspeaker power.

While indoor speakers having low to moderate wattage perform pretty well, you really need to purchase a model with moderate to high speaker wattage to use outside since the audio is going to dissipate freely thus the speaker won’t as easily achieve the needed loudness. In addition, noise from vehicles along with wind noise require a greater power level.

Placing long speaker cables can be another big obstacle since there usually isn’t any pre-wiring in place out of doors. Excavating ditches to cover speaker wire could also damage your flower beds and also cross through obstacles just like retaining walls. As a result an option to contemplate are cordless outdoor loudspeakers. Wireless speakers have a transmitter which attaches to your source and are reasonably easy to set up. Because of the long distance between the transmitter component and your loudspeakers, be sure the type you decide on delivers ample range. Cordless loudspeaker producers typically specify a maximum operating range. Be cautious though simply because this operating range is commonly provided for perfect conditions. In your application the operating range will commonly be lower than the highest operating range. To better establish the operating range, some manufacturers also list a range in common circumstances. You should use that operating range as a guideline but the real range may almost certainly vary. Partitions along with other obstructions will reduce the range as the wireless signal will get weaker each time it needs to pass through a doorway.

Additionally, be sure that the cordless signal is robust against interference. There might be wireless LANs along with other wireless devices in your area that can shut down your speaker unless the cordless transmission features a procedure to address this sort of interference. Contemporary transmitters feature adaptive frequency hopping to stay away from crowded channels as well as forward error correction to cope with lost data packets. Also, pick loudspeakers where the transmitter has each of the necessary audio connections in order to effortlessly interface with your audio gear. Some widespread audio interfaces include iPod cradles, line-level music inputs in order to connect with a Compact disc or MP3 player plus speaker inputs to interface to your home entertainment receiver.

You can find further details regarding outdoor speakers as well as amplifier models at Amphony’s web page.

Feb 112012

Music can be quite a interesting element in your grill party. Then again, there are facts to understand while getting outdoor speakers for outdoors. I am going to provide some guidelines that may help you make a good decision for cordless speakers.

While installing speakers outdoors, the very first aspect to consider is making sure your speakers may weather the sun and rain without damage. For a short-term setup, you obviously are good to use any kind of loudspeaker. If you’re planning on leaving your speakers out of doors for extended durations, then having waterproof speakers is a must.

For outdoor usage, you should pick speakers with bigger wattage compared to loudspeakers which you have in the house. Speaker makers usually will display both an RMS and a peak wattage . Peak wattage reveals the amount of energy the speaker can withstand for short periods of time. The RMS power level, on the other hand, exhibits how much power the speaker may endure continuously.

Maximum wattage could be deceptive since it is often overstated. So check out the RMS power spec whilst comparing speakers. An additional parameter is called sound pressure level or SPL. This particular parameter shows how deafening your loudspeaker can get while driven by 1 Watt of power. Having a speaker which has a high power level isn’t much use if the loudspeaker won’t produce much volume.

In order to avoid the hassle of running miles of loudspeaker wire, you could opt for wireless surround sound products. Battery-powered wireless speakers also get rid of the cords yet need recharging. If you need big power, battery-powered loudspeakers may not be the right choice. They usually have lower wattage than mains-powered products. A number of wireless loudspeakers can be used as stereo loudspeakers in addition to mono loudspeakers through changing the channel and are therefore suited to being set up a few ways.

If you set up your loudspeakers a long way away from the transmitter, be sure you pick a product with sufficient range. Additionally, if you have walls and other obstacles between the transmitter and your speaker, the operating range of the transmitter may be lowered. Usually cordless speaker makers will display a maximum range in the case of line of sight meaning there is not anything in between the transmitter and loudspeaker and also a typical range if the cordless signal has got to journey across walls or ceilings.

You want the wireless transmission to be sturdy and free from pops and dropouts. Hence purchase a speaker which implements error correction or other methods to combat cordless interference.

You can find additional information concerning wireless speaker products as well as wireless surround sound speakers from Amphony’s web page.

Jan 082012

There exists a flood of wireless speaker types offered. Various products provide you with different performance in addition to level of quality. I’m going to assist you to choose which brand to pick depending on loudspeaker operation.

Should you have a large house then setting up wireless surround sound speakers may be a difficult task. You might not wish to drill openings in your walls to run loudspeaker cables. As an alternative, wireless loudspeakers offer greatest independence in addition to quick and easy installation.

Cordless speakers are usually more complex than regular loudspeakers. They integrate an amplifier which will impact speaker operation. The wireless receiver also has to be high quality and there’s a large number of diverse solutions in the marketplace.

Speaker wattage is among the first parameters. The greater the speaker wattage often the larger the speaker sound pressure level can be.

Speaker power is given either as RMS wattage which shows how much power the speaker amp is able to sustain constantly in addition to maximum wattage that tells the amount of wattage the amplifier can endure for short durations.

However, keep in mind that audio signals contain large spikes in output power so make sure there’s sufficient headroom in the speaker wattage rating to remove music clipping at brief music peaks.

Another essential spec is the loudspeaker frequency response chart. Some suppliers are going to publish the frequency response diagram that is ideal for finding out how linear the speaker is going to recreate music over frequency and presents an excellent clue regarding speaker audio quality.

Harmonic distortion, also referred to as THD, will affect the audio quality of the speaker. This particular expression is either given in dB as well as in percent and tells exactly how much the music is altered from the original audio signal. The cordless receiver, music amp in addition to the transducers lead to distortion. Ensure that you examine the output wattage at which the harmonic distortion is specified. If at all possible you will discover harmonic distortion data for several power figures When the output power approaches maximum rated wattage, the audio signal will begin clipping and the distortion will increase greatly. Furthermore, the loudspeaker transducers are going to be driven into nonlinear regions and therefore make sure the speaker is sold with high-quality transducers.

The quality of the built-in amplifier is going to have a significant effect on sound quality and additionally power effectiveness. Digital amps by nature tend to be more effective in comparison with Class-A as well as Class-AB amps. Large-efficiency amplifiers do away with heavy heat sinks and save electricity. Digital amps frequently have greater harmonic distortion than analogue amps. This distortion is in part brought on by the switching FET stage of the amplifier.

Numerous types have more than one drivers that require the audio signal to be separated by a cross-over. A few types include individual amps for every driver.

It is essential to select a brand that includes a good-quality cordless receiver. Entry-level loudspeakers with 900 MHz analog receivers are going to create a great deal of noise and music distortion during the cordless transmission. More modern products utilize digital music transmission and provide superior amounts of signal-to-noise ratio in addition to fidelity compared to previous-generation brands.

Digital cordless loudspeakers make use of uncompressed audio for best quality or compressed music such as Bluetooth loudspeakers. Bluetooth cordless speakers don’t require a dedicated transmitter however typically only one loudspeaker can pick up the music from one transmitter. Other types of cordless loudspeaker transmitters may send the audio wireless to several speakers throughout the home.

You can get further information concerning wireless speaker system products as well as wireless surround sound products at Amphony’s web site.