More and more wireless audio transmitter products promise the ultimate freedom in streaming music all around the house. We will check out different products and technologies to discover in how far these products are of help for whole-house audio applications along with what to look out for when buying an invisible system.
Running music in your own home can be quite a daunting task. Many homes are not wired for multi-room audio and getting the music out of your family area for your bedroom is definitely a challenge. Items that solve this problem are often in line with the following technologies: infrared wireless, RF wireless, wireless LAN or powerline.
Infrared wireless audio items are tied to line-of-sight applications, i.e. only operate in just a single room because the signal is shipped as infrared light which cannot penetrate walls. This technology is often within wireless speaker kit products.
RF wireless audio products send the audio signal via radio waves. These radiation signals can certainly undergo walls. The signal is sent either by making use of FM transmission or digital transmission. FM transmitters are the most inexpensive option. They have good range nevertheless the audio signal is prone to audio distortion and noise and is also very vulnerable to interference off their wireless transmitters.
Digital wireless audio transmitter products start using a digital protocol. The audio is first changed to digital data before being transmitted. This technique helps to ensure that the audio quality is fully preserved. Some transmitters apply way of audio compression, for example Bluetooth transmitters, that can degrade the audio to some degree. Transmitters which send the audio data uncompressed will achieve the highest fidelity.
Products using wireless LAN are useful when streaming audio from your PC. Their drawback is that they normally have some fairly high latency, i.e. the signal is going to be delayed by some amount since wireless LAN had not been specifically made for real-time audio streaming. Also, some products require to buy separate wireless LAN modules that are plugged into each audio receiver.
Powerline products send the audio using the power mains and gives great range. They encounter problems in houses where you can find separate mains circuits with regards to having the ability to go over into another circuit. Also, the products build in a delay of countless seconds to shield against transmission errors during harmful electrical currents and spikes which prevents their use in applications the location where the audio from wireless stereo speakers needs to be in sync with other non-wireless speakers or video.
Follow this advice for deciding on a wireless audio system: If you’re going to stream audio into several rooms of your dwelling, be sure you decide on a system that enables streaming to multiple receivers concurrently. This way it’s not necessary to buy a separate transmitter per receiver that you’re streaming to. Some products incorporate some kind of error correction built-in which will help guard against dropouts in case there is strong wireless interference. Pick a digital RF audio transmitter to ensure that the audio quality is preserved. Ensure that the audio latency is under 10 ms for those who have a real-time application for example video.
Select a transmitter which includes all the audio inputs you will need, e.g. speaker inputs, RCA inputs etc. Pick a system to add receivers afterwards that offer each of the required outputs, e.g. amplified speaker outputs, RCA outputs etc. In the event you decide on a digital audio transmitter, choose one with an input audio level control knob in order to avoid the audio signal from clipping in the transmitter audio converter. This may ensure optimum dynamic range whatever the signal degree of your equipment.
Be sure the amplified wireless receivers have built-in digital amplifiers with low distortion figures. This can keep the receiver cool because of high amplifier efficiency and offer optimum audio quality. Ensure that the receivers can drive speakers with your desired Ohm rating. Deciding on a product in which the wireless receivers have a small footprint and easy mounting options might help during the installation. Products which be employed in the 5.8 GHz frequency band will have less difficulties with wireless interference than products while using the crowded 900 MHz or 2.4 GHz frequency band.
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