KTV power amplifier and speaker selection

KTV power amplifier is divided into merged karaoke power amplifier and the combination of front and back stage separation, according to the type of microphone effect is divided into traditional ECHO and DSP. In fact, the traditional ECHO is also the early DSP processor, limited to the technical needs and cost control at that time, the function is not high, the use of planning has been more or less bundled. Pre-planned combined karaoke amplifier power is generally relatively small, matching speakers are high sensitivity of small power speakers, the simplest problem is the feedback scream (flying mark), because the large volume operation of the lack of power storage, resulting in severe signal distortion, coupled with high sensitivity speaker distortion feedback, Distortion is expanded by loop, resulting in feedback whistling (Fei Ma). In principle, the primary incentive for a feedback scream is distortion, which reduces the probability of a feedback scream, but not necessarily a scream. It can only be said that within the available gain plan, when the gain is large enough, the feedback scream will also occur. That is to say, KTV Cara OK amplifier should try to choose high power. However, the greater the power of the amplifier, the harder the tone feeling, through practical experience each channel within 8 300W can be selected. Selection of power amplifier and speaker allocation is very important, the impedance of the speaker, sensitivity and power will affect the choice of power amplifier, the general principle is that the high sensitivity of the speaker power matching a little bit smaller, power amplifier power 2 times the speaker power can be low sensitivity of the speaker power matching a little larger, power amplifier 2.5-3 times the speaker power. The rate can be, so the equipment is relatively stable. Amplifier timbre is the most difficult to determine, not words can be expressed, this is also the most difficult part of many manufacturers can make a living of the truth, the world of sound is very difficult to have a certain king, all depends on personal understanding and choice. Less than 18 square meters of room on the bottom of a well planned traditional ECHO effect Cara OK power amplifier is enough. However, due to management needs, when you treat sound effects as a product, the traditional ECHO will constitute the uncertainty of sound effects, and the debugging requirements of each guest may make it impossible for managers to determine the effect in the same direction forever, and will also make the DJ tired. The second reason for using power amplifiers with DSP processors is that traditional ECHO effect processing chips have narrow frequency response planning (less than 8KHz), low sampling frequency, and appear cloudy and weak in the environment requiring high-power output, unable to go far, penetrating force is impossible. DSP sampling frequency up to 48K and 20Hz to 23KHz broadband response planning bring clearer sound quality and better medium and high frequency penetration. The third reason for using a power amplifier with a DSP processor is that the DSP effect processor can store multiple effect data, bring real and usable Reeverb - "reverberation" effect, give consumers more experience in singing K, truly realize consumer self-help K song, and greatly reduce the service requirements of DJ, plus VOD system effect initiative initial The sound effects of the rooms can also reach the common level. To be fair, assuming that only the tone color is evaluated in the compartment below 18 square meters, the traditional ECHO effect of a well-planned computer is not inferior to the DSP effect, but rather thick and tactful, while the DSP is a bit too digital, not flexible. Assuming that the LPF of the DSP is tuned to 8 Khz, the contrast between the two is more obvious, the first difference is in the low-frequency thickness part. . The choice of merged karaoke power amplifier and the split distribution of front and rear stages mainly depends on the practical needs of the use of the room type. The type of room less than 18 square meters is recommended to choose the merged type of DSP karaoke power amplifier of about 200 W; the type of room more than 18 square meters to about 25 square meters can choose the three-channel 200 W DSP karaoke power amplifier to increase the middle speaker as the tweeter vocal compensation. Sound level, sound field uniformity, reverberation field establishment and other factors should be considered first. The characteristics of the primary speaker's secondary amplifier and the speaker should be used to select the appropriate power. Multi channel low power rear amplifier will reduce the cost.

KTV compartment sound selection is divided into the primary speaker and auxiliary speaker, compartment sound box the main evaluation is that the voice should be outstanding, dynamic and static phase to (listen to see if the voice can be sent out, some speakers will feel the voice behind the box), music frequency to be wide, dynamic enough, might as well find a pair of comparison to choose, the most Close election is not wrong. The choice of private room speakers should also be based on the consumption method of policy consumer groups. Karaoke consumers in big cities are more sophisticated in consumption concept, and the classification of cultural and entertainment places is more detailed. On the basis of this, the compatibility of K and HI can be ignored or less considered. It depends on the location of the investor's shopping mall, the primary consideration of pure K is the voice of the people. The bass unit speaker has the best voice performance, and the 10 "bass unit speaker will be much better in musicality, with a slightly worse voice.

People's entertainment malls in the second and third tier cities started late, and consumers'consumption concept of karaoke was confused. They believed that KTV was a relaxing place. They also needed DISCO for singing and HI for HI. The situation was different from place to place. For this compatible requirement, the 10 "bass unit speaker is the main, the best use of low sensitivity, so that the planning comparison can withstand the test. Over 45 square meters of large rooms, the general demand for the use of more than 12 "bass unit speakers, so the function of the price is relatively high, of course, the equipment more than 8" or 10 "speakers plus auxiliary bass speakers can also be, each has its own characteristics, the first thing to see is funding and policy needs. Most of the 8 "or 10" speakers express the effect, the voice will be more soft, music surrounded by a better sense, but the pressure level is not, dynamic is not, about pure K planning is acceptable. 12 "or 15" loudspeakers are generally horn tweeters, sound pressure level, long range, dynamic is also large, the shortcomings are sound health, of course, specially planned for KTV 12 "or 15" loudspeakers will also have a good performance. The use of 12 "or 15" speakers as the primary speaker is also generally required to equip the auxiliary speaker, the auxiliary speaker does not exceed 8 "is appropriate, it is best to increase the frequency division line to cooperate with the main speaker color.

KTV compartment microphone selection method is one of the many, if possible, more microphone options, different areas and decoration style of compartments will be used in different types of microphones, as mentioned above, the best choice of KTV professional planning microphones. Auditions are to be taken by male and female singers of all ages. There will also be different microphone distribution for different speakers, and field test is the most important.