source:Industry News release time:2022-10-19 Hits: Popular:Brand bar audio wholesale
From the current radiation analysis of electric loudspeakers, we can know that in general, there are the following conclusions:
1 Size is proportional to sensitivity and low frequency. For units of similar design, the larger the radiation area is, the lower the low frequency starting frequency is. In the industry, it is generally expressed as - 3dB of the system. Note that this is the value of the low frequency response F3 of the system (a system including the speaker line, box, unit, and filter (if any)), rather than the Fo of the unit itself. For example, for a Japanese full frequency unit, its Fo may be only 50Hz, but its Qes may be as low as 0.25. After the unit is packed, its F3 may be as high as 80Hz.
2 The size is inversely proportional to the high frequency. This is also easy to understand. The larger the area is, the greater the vibration mass is, so the less high-frequency components can be radiated, which is similar to an asynchronous "energy conservation" principle.
3 Size is inversely proportional to directivity. It is easy to understand that when the equivalent area increases, the vibration mode determines that the energy radiated from the off-axis is less and less. Therefore, many large aperture units need to use phase plugs or waveguides to partially improve this problem. For example, a Norwegian brand of 8-inch full frequency has added a mushroom waveguide. According to the "energy conservation like principle" mentioned above, it is assumed that the radiation energy on the 0 axis of the unit itself can just meet the needs of listening. However, after the waveguide is added to improve the directivity of such large aperture units, the energy of the off-axis is indeed a little more, but this is separated from the 0 axis, so the radiation on the 0 axis will be problematic. The severity of the problem is that most manufacturers do not realize this, or after realizing this, they increase the output of Axis 0 in the high frequency band (it can be seen that the curves given by some unit manufacturers are very high at the high-end). At this time, the off-axis is perfect, but Axis 0 is high again. What should we do? In most cases, the manufacturer will add a low Q notch filter to solve this problem from the circuit... Therefore, it can be seen that the full frequency units with large caliber (especially those above 6.5 inches) are contradictory and unsolvable
4 Distortion. At present, the design of high sensitivity cell, which is the mainstream, one-sided pursuit of high sensitivity, requires large size. At the same time, it also needs to reach a higher upper limit of 0 axis high frequency, which leads to the need to strictly control the equivalent vibration weight. After the diaphragm material and structure are selected, it will not move much. In order to meet certain strength requirements, the weight of the diaphragm will not move much (when the bottom limit is reached, no matter how low the strength is, the problem will become serious). We can only start from the voice coil. The voice coil can hardly move when it meets the parameter requirements, so the only thing that can move is the voice coil roll (roll refers to the height of the voice coil winding). Therefore, the traditional products of this kind, although they can be paired with a small bile machine to listen to the taste, will become soft once they arrive at the occasion of great dynamics (that is, the pop show). A lot of time, people who don't understand the barbecue may misunderstand that there is a problem with the courage or the box. They rarely doubt that it is a problem with the unit. Many people think that the dynamic is OK when they look at such a large size, such as 8 inches.
Popular recommendation
D2 AMPS Bar speakers wholesaler
2021-07-26XQ48 Bar sound bar Merchant
2021-07-26A3 Home ktv audio Merchant
2021-07-26Resolution 1.5 ktv bar sound Vendor
2021-07-16D80DSP Large bar sound Vendor
2021-07-26PSM18 POINT SOURCE MONITOR Speaker bar Factory
2021-07-16A2 Dalian Bar Audio Vendor
2021-07-26F221 Marten Audio Merchant
2021-07-14AX 8 KTV audio price
2021-07-17C10 Sound bar manufacturer
2021-07-26BR132A Bar speaker wholesale
2021-07-14EVO 6E KTV audio Merchant
2021-07-16Combination rules and requirements for professional audio equipment.Gymnasium audio Vendor
2021-11-10Famous British audio brand-B&W!Sound bar Vendor
2021-10-19How to match the amplifier and speaker
2023-02-15What should I pay attention to when buying professional audio?Bar sound engineering Vendor
2021-11-18What kind of speaker is used in the party bar --- Mateng Audio
2023-01-04The design points of small conference sound system
2021-09-15How to judge whether the KTV audio is good!KTV audio sales
2021-10-15The use and function of several major equipment in professional audio equipment
2022-03-19What factors need to be considered when purchasing conference audio equipment?
2022-08-22The composition of the conference sound system.Bar use audio Vendor
2021-11-11Features of Line Array Speakers-Audio Common Sense.Concert audio
2022-05-23How to do balanced wiring of professional audio!Sound bar Vendor
2021-10-20