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Recommendations For Picking The Best Wireless Audio Transmitter Device For Whole-House Audio Streaming
The newest series of wireless audio transmitter devices claims streaming of music throughout the home without limits. We will look at the most popular technologies for wireless audio and give some recommendations for picking the best wireless audio product.
Running music in your house can be a intimidating task. Many houses are not wired for multi-room audio and getting the music from your living room to your bed room can be quite a problem. There are several technologies solving this problem. These include infrared wireless, RF wireless, wireless LAN (WLAN) and powerline.
Infrared wireless audio products are restricted to line-of-sight applications, i.e. only work within a single room since the signal is broadcast as infrared light which cannot go through walls. This technology is often found in wireless speaker kit products.
RF wireless products broadcast the audio as RF waves – either by utilizing FM transmission or digital transmission – and can therefore without difficulty transmit through walls. The least expensive option is FM transmission. Products utilizing FM transmission, on the other hand, have a series of drawbacks. These include degradation of the audio quality due to noise or hiss and audio distortion. In addition, FM transmitter products are also rather prone to interference from other wireless transmitters.
Products which use digital wireless audio transmission utilize a digital protocol. Such devices include transmitters from Amphony. In this protocol, before transmission the audio signal is converted to digital data. This method ensures that the audio quality is entirely preserved. Some transmitters employ some type of audio compression, such as Bluetooth transmitters, which will degrade the audio to some extent. Transmitters which send the audio data uncompressed will achieve the maximum fidelity.
WLAN products are useful for broadcasting audio from a PC. However, wireless LAN was never designed for real-time audio streaming. As a consequence, products using WLAN will introduce some amount of delay to the signal. WLAN receivers frequently do not have built-in network access. As a result, such products often require purchasing separate LAN cards. These cards are then plugged into each receiver.
Powerline products send the audio by means of the power mains and provide great range. They run into trouble in homes 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 avoid audio dropouts, these products will normally have an audio latency of several seconds as a safeguard.
Here are some suggestions for picking a wireless audio system: If you plan to stream audio into several rooms of your house, be sure to choose a system that permits streaming to multiple receivers at the same time. That way you don’t have to buy a separate transmitter for every receiver that you are streaming to. Selecting a product with some sort of error correction will help mitigate against strong RF interference. Such interference can be brought on by other wireless transmitters. Choose a digital RF transmitter to maintain the original audio quality, preferably one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.
Make sure the wireless transmitter provides the audio inputs you need. 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. Select a transmitter that can regulate the audio volume of the input stage. This will give you the flexibility to connect the transmitter to any kind of equipment with different signal levels. Otherwise the audio may get clipped inside the transmitter converter stage or the dynamic range is not fully utilized.
Make sure 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. Make sure the receivers can drive speakers with your preferred Ohm rating. Picking a product where the wireless receivers have a small footprint and easy mounting options will help in the course of the set up. 5.8 GHz wireless products normally have less problems with interference from other wireless transmitters than devices working at 900 MHz or 2.4 GHz.
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