Tuesday, April 1, 2014

Suggestions For Getting Cordless Surround Sound Speakers

By Mike Hunter


I will present some suggestions to help you select a couple of cordless speakers from the large number of available types.

Wireless speakers are an excellent choice for adding speakers in additional rooms of your dwelling with no need of placing cabling. Also, these loudspeakers are ideal for adding multichannel audio to your TV with no need of installing plenty of loudspeaker cord around the room. But, it usually is hard to opt for a suitable model because of the multitude of models currently available.

For those who have a large space you might desire to choose a loudspeaker having a large wattage as a way for the loudspeaker to get sufficiently loud.

Speaker wattage is specified either as RMS wattage that tells how much wattage the loudspeaker amp can sustain constantly and maximum wattage that tells how much wattage the amplifier can endure for brief durations. Audio signals, however, contain varying wattage. Hence preferably you should have both power specs. The RMS rating allows you to compare loudspeakers more objectively yet the loudspeaker must offer a maximum wattage handling which is significantly bigger than the RMS rating in order to avoid clipping of the audio during peaks.

Music signals, however, contain varying power. Hence ideally you need to have both wattage specs. The RMS rating will allow you to compare loudspeakers much more objectively yet the speaker should offer a maximum wattage handling which is significantly larger than the RMS spec in order to avoid clipping of the music during peaks. Another critical parameter is the loudspeaker frequency response chart. Some vendors are going to publish the frequency response diagram that is well suited for learning how linear the loudspeaker is going to reproduce audio over frequency and presents a good clue regarding speaker audio quality.

The total-harmonic-distortion term, often called THD, indicates just how much the sound will be distorted by the internal audio amplifier and transducers. Ordinarily the higher the loudspeaker is driven, the harmonic distortion of the speaker will grow. To allow easier comparison of different types, you need to try to find harmonic distortion data for various output power specs. At lower output wattage, the distortion is usually relatively low. Once the music amp is driven to its highest power, sound distortion will increase drastically as a result of clipping of the audio signal. Loudspeaker audio distortion will also depend upon the quality of the drivers

The quality of the internal amp will have a significant effect on audio quality and also power efficiency. Digital amps by nature are far more efficient in comparison with Class-A as well as Class-AB amplifiers. High-efficiency amps eliminate large heat sinks and save electricity. Digital amplifiers often times have higher harmonic distortion than analogue amps. This distortion is in part caused by the switching FET stage of the amplifier.

Wireless loudspeakers often times have several transducers. Each driver is driven with a different part of the audio spectrum. The sound signal is split into various areas using a cross-over. A number of brands incorporate individual amplifiers for each driver. The receiver which picks up the cordless audio either coming from a transmitter or from a wireless network or Bluetooth signal also has got a significant affect on sound quality. For perfect sound quality, you might avoid 900 MHz analogue wireless transmission that naturally has a low signal-to-noise ratio as well as instead choose a receiver which utilizes a digital audio signal.

Wireless speakers that use digital transmission either receive uncompressed music or use a standard such as Bluetooth which compresses music to a degree. Bluetooth audio transmitters utilize music compression and normally are not able to transmit to more than one speaker but provide the benefit of not demanding a dedicated transmitter.




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