What Is a Karaoke Amplifier?

Karaoke amplifiers are divided into, according to. In fact, the traditional ECHO is also an early DSP processor, which was limited to the technical requirements and cost control at that time. The performance was not high and the application range was limited.

Karaoke amplifier

Used in karaoke equipment

In addition to the karaoke equipment, the quality of the amplifier itself is also very important. ^[1]

The function used by KTV should be combined with the size of your room and the decoration materials. Different areas of the room use different amplifiers. Pay attention to the matching of amplifier power and speakers.

The power of the integrated karaoke amplifiers designed in the early days is generally small, and the supporting speakers are low-power speakers with high sensitivity. The most common problem is feedback howling. The reason is that the power reserve is insufficient when working at high volume, which causes serious problems. Signal distortion, coupled with high-sensitivity speaker distortion feedback, the distortion is amplified in a loop, resulting in feedback howling. In principle, the main cause of feedback whistling is distortion. Reducing the distortion can reduce the chance of feedback whistling, but it cannot be said that feedback whistling will never be returned. It can only be said that within the available gain range, when the gain is sufficiently large, It also causes feedback howling. In other words, the karaoke amplifier should be selected as high as possible. However, the larger the power of the amplifier, the harder the sound feels. Through practical experience, you can choose any within 8450W per channel.

A room smaller than 18 square meters is basically a well-designed traditional ECHO effect karaoke amplifier. However, the traditional ECHO will cause the uncertainty of the sound effect, and the requirements of each guest's effect debugging may make the manager never be able to determine the effect in a unified position, and it will also make DJ tired. The second reason for using a power amplifier with a DSP processor is that the traditional ECHO effect processing chip has a narrow frequency response range (less than 8KHz) and a low sampling frequency. It appears cloudy and weak in an environment that requires high power output. Not enough penetration. The DSP's sampling frequency of up to 48K and a wide frequency response range of 20Hz to 23KHz bring clearer sound quality and better mid-to-high frequency penetration. That is why people who do nt sing, once they use DSP amplifiers, their voices are beautified at once, more magnetic, more attractive, and sounds more comfortable.

The third reason to use a power amplifier with a DSP processor is that the DSP effect processor can store multiple effect data, and bring a truly usable Reverb- "reverb" effect, giving consumers more K-singing experience and truly achieving Consumer self-service K-songs have also greatly reduced the DJ's service requirements, coupled with the automatic initialization of the effect of the VOD system, the sound effects of private rooms can also reach a consistent level. To be fair, in a private room below 18 square meters, if you simply evaluate the sound, a well-designed traditional ECHO effect does not lose to the DSP effect, but appears to be thick and smooth. Where the LPF of the DSP is adjusted to 8Khz, the contrast between the two is more obvious, and the main difference is in the low-frequency thickness part.

The choice of the combined karaoke amplifier and the front and rear splits mainly depends on the actual needs of the application room type. For rooms less than 18 square meters, it is recommended to choose a DSP integrated karaoke amplifier of about 200W; for room types over 18 square meters to about 25 square meters, you can choose three. Channel 200W DSP karaoke amplifier to increase the center speaker for middle and treble vocal complement; for private rooms over 25 square meters, consider using front and rear splits. According to the actual shape of the room type, the main consideration is the sound pressure level. , The uniformity of the sound field, the establishment of the reverberation sound field, etc., the main amplifier's post-stage amplifier matches the characteristics of the speaker to choose the appropriate power, and the auxiliary low-power speakers can use multi-channel low-power post-stage amplifiers to reduce costs. ^[2]