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Monday, November 9, 2009

Do I need a Karaoke Amp?

By Jonathon Hardcastle

A karaoke amplifier is designed especially for karaoke machines; but you may wonder if you truly need one. While an amplifier can be designed for home use, most are for karaoke DJs. They have more features than a traditional public address system and they ease the process of setting up and taking down a karaoke setup.

These are all features that a professional karaoke DJ would like to have. Karaoke amplifiers are also commonly referred to as hybrids because they have the features that are also found on many pre-amps.

One feature in particular is multiple inputs, which enables you to get audio signals from more than one source. If you have an iPod and a karaoke machine, you no longer need a mixer because you can use your amplifier. Most also have a radio tuner.

A standard karaoke amplifier should be able to run at least four speakers effectively. As the general rule of thumb, a good setup includes two main speakers, a monitor speaker, and a subwoofer. Sound will get out to your audience when the subwoofer and main speakers work together.

The karaoke singer can hear themselves through the monitor speaker. The best karaoke amplifiers have a built-in crossover, which means that the low frequencies from the subwoofer will only go through that subwoofer; this helps to keep them separate from the mix. For the best results, run the main speakers and the monitor on the same channel because the higher frequencies do not need too much power.

You must match your amplifier to your speakers. Ensure the main speakers are able to handle more power than the amplifier, but it doesn't need to be too much more. For example, if you have an amplifier that can put out 300 watts, a speaker that can handle 450 watts is perfect.

If the amplifier is able to put out eight hundred watts, then an individual speaker must be able to handle one-thousand. However, when running that many watts, you will likely be running multiple speakers. In this case, you add the wattage of each together to determine how much they can handle. With eight hundred watts, you could run two five hundred watt (or even four hundred and fifty) speakers, or four two to three hundred watt speakers.

The flip side of this is buying a subwoofer that is rated for fifteen hundred watts and only running it off of a three hundred watt amplifier. You will likely burn out the amplifier and never get a good sound from the speaker because it needs more power than it is getting just to properly produce sound. - 18418

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