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 have enough power to efficiently run four speakers. For a good setup, you want one speaker for the monitor, one speaker for the subwoofer, and two main speakers. The main speakers and the subwoofer are what gets the sound to everyone in your audience.
The monitor speaker enables the karaoke singer to hear themselves. The best applications, like amplifiers, for DJs have a built-in crossover; this means the subwoofer’s low frequencies only go to the subwoofer and this keeps them separate from the rest of the mix. Since higher frequencies don’t need as much power, you can run the monitor and main speakers on the same channel.
In terms of watts, your amplifier must be matched to your speakers and so forth. It doesn’t need to be by much, but the speakers must be able to handle more power than an amplifier can put out. For example, a 400 or 450 watt speaker is needed for an amplifier that can put out a total of 300 watts.
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.
Keep these figures in mind when buying a subwoofer because you don’t want to run a 1,500 watt subwoofer on a 300 watt amplifier. If you do, you won’t get the best sound quality and may even burn out the amplifier because more power is needed than what is being provided.
Don’t overpay on your next karaoke system or karaoke amplifier
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