What is a Sound Baffle?

A speaker is a device that converts audio signals into sound. Baffle speakers are a type of speaker, which is characterized in that the speakers are mainly composed of baffles. This speaker is mainly used for Hi-Fi speakers. In fact, the speaker manufacturers test the various indicators of the speaker, which are installed on the baffle plate and placed in the anechoic chamber for testing.

Speaker finger can turn

The so-called baffle speakers are

The sound energy emitted by the speakers is radiated from the front and back of the cone. There is air in the front and back of the paper cone when it moves forward. The air in front of the cone is squeezed to become dense, and the air behind the cone is sparse. The opposite is true when the paper cone is moved backwards. The sound energy radiated from the front of the paper cone and the sound energy radiated from the back are exactly in reverse relationship, and they will cancel each other out. At this time, the response of the speaker will suddenly drop. This back-and-forth interference phenomenon is most severe at the low end of the frequency. If we put a hard flat plate around the circumference of the paper cone. Then the sound waves on the back of the paper cone must bypass the flat plate before they can meet the sound waves on the front of the paper cone and interfere with each other. The flat plate that surrounds the circumference of the paper cone is called a "baffle".

The role of the baffle, we have a little understanding through the understanding of the speaker's sounding process. The baffle should be made of high-quality insulation material. And the texture should be softer to prevent the "ticking" sound. Softwood composite panels are relatively satisfactory, and the outer frame can be made of hardwood. Hard and soft wood should be slotted and tightly jointed. The joint must be bonded with a high-strength adhesive to make it a whole. 15mm or 20mm thick fiberboard two layers of compaction (preferably in a furniture factory) to 30mm or 40mm thick is the best material for baffle. In addition, many composite boards such as red pine, white birch, manchurian ash, and sycamore are good materials for making baffles. Of course, the choice of materials depends on personal preference. In order to prevent the noise caused by the "click" sound and resonance, the speaker must be firmly fixed on the baffle, and the baffle must be installed firmly.

The original designers of this speaker are ThomasM and Jon Marsh, both of whom borrowed Siegfried Linkwitz's Phoenix design philosophy and chose all

Front photo of home theater and finished photo of main speakers

The speaker with aluminum diaphragm is designed as "ArvoPart" for Hi-Fi. This speaker has a huge size and high power output capability. In addition to being used in large listening rooms, it can also be used in specialized home theaters.

"Arvo Part" is a hybrid baffle structure. The treble and midrange parts are fully open baffles, and the bass part is a semi-open baffle. From the front, it is more appropriate to call them speakers. It uses a 28m m Dayton RS28a dome tweeter, two 8-inch HiVi M8a midranges, and two 12-inch TC Sounds TC-1000 basses. Metal has the characteristics of light weight and high rigidity, which is more suitable for the requirements of both low distortion and high output.

Since the TC-1000 has been discontinued and it is not easy to buy, this production was changed to Dayton RSS315HF-4. Correspondingly, the frequency division circuit has been modified.

This dual-bass, dual-midrange hybrid 3-way 5-unit floor-mounted baffle speaker is used as the main speaker of home theater. Under the condition that the distortion-free output is not less than 105dB, the sound floor is clean, which can Reproduce the shocking power of the bomb explosion and restore the realistic 3D sound image. ^[2]