High frequency car speaker systems. Encyclopedia of radio electronics and electrical engineering

Encyclopedia of radio electronics and electrical engineering / Speakers

 Comments on the article

Frontal acoustics wandered for me strongly and for a long time, until in the end there was such a combination of location, orientation, crossover frequency, phase and frequency equalization, in which the sound stage sat in the right place. Here it is time to think about the aesthetic aspects.

The initial situation was as follows: Fokalov's tweeters are mounted on plastic facings of the front pillars, and holes are cut in the facings comparable in diameter to the bodies of the HF heads (without a front flange), and the heads themselves are fixed on flexible steel strips so that the orientation can be changed. After numerous, but, thanks to this design, not laborious trials, the required position was found. Now he had to be immortalized.

There were plenty of live reproaches. Well, at least this example, installation on the prize-winning Ford Escort from the British finals.

First of all, rings were cut off from a cardboard tube of a suitable diameter, which were put on the tweeters with a gap, and gradually adjusted so as to fit, if not along the entire perimeter, to the lining, and at the other end to become flush with the front plane of the tweeter. Where can I get a pipe? In my case, it served (once) as a container for sending geographical maps by mail. Another source, I suspect, with a large selection of diameters, can be trade enterprises that sell carpets, linoleum, film, etc. Is the concept clear? By the way, I have the same pipe and use it in phase inverter tunnels. One single map of the active tectonic structures of North Africa - and how much benefit to humanity!

After fitting, the resulting pipes were seized (no more than that) by "Moment" to the facings, and the tweeters were removed and set aside - from sin. Now the nozzles fixed on the facings have become the carrier of invaluable information about the cherished orientation of the axes of the HF heads.

The final fixing was achieved with fiberglass automotive putty (commercially available).

Now the most fun - giving grace to forms. Once I tried the textile version, caraudio.ru/articles/impdoors, I fell in love with it for its technological elegance and in this case I didn’t even think much.

The advantage of this technology over others based on mechanical processing is that geometrically consistent, smooth contours are obtained by themselves, and very quickly. In this work, I used two stubs of radio fabric (speaker cloth), left over from one of the previous projects. In general, you can use any stretchable fabric, the thicker - the stronger it will turn out. The fabric was fixed on the reverse side with contact glue (sold in auto audio stores and will be needed anyway when finishing).

After making sure that the fabric is stretched and has taken the same shape on both blanks, we knead the resin and soak it. Resin for such work is better to take branded polyester (car accessories stores, for example AGA - there is one on 2nd Frunzenskaya, there is somewhere else). It is less viscous than the epoxy dear to the heart, and impregnates better, and if you don’t miss the proportion when adding a hardener, then it “gets up” faster, in an hour or so. It is necessary to impregnate everything, except for the middle of the future hole for the squeaker - it will be cut out later anyway, it will be easier on unimpregnated fabric.

Once the resin had cured, the strength was sufficient for any reasonable handling - as a consequence of the relatively thick fabric. One talented resident of sunny Chukhon described his experience of using such technology, so he went and bought ladies' tights. In his case, then he had to apply more fiberglass - in tights like a power - there was only one appearance...

Before the final finishing, I walked over the entire surface with an ordinary two-component putty, while basically it was necessary to smooth out the transition points from the fabric to the lining (shown by arrows) so that the resulting step was not very noticeable. If it was supposed to be painted later on the finished panels, it would have been a lot of work to remove the surface, but since I was oriented in advance to the vinyl finish, I could take the skin later and complete everything in a matter of minutes. Simultaneously with grinding the front surface, it is necessary to remove (cut / cut off) the edges of the fabric, bent to the reverse side, and cut out a section inside the nozzles.

Vinyl, which is conjured on the pages of foreign sources, when crossing the border of the Russian Federation turns out to be just a leather substitute (we once had an ugly new language word vinyl polish. That's what it is.) Finishing with vinyl (I'll call it that - for solidity) is a short-lived business, but it requires a certain inspiration. From the materiel you need: contact glue, as already mentioned, and a heat gun, in extreme cases - a hair dryer. We apply glue, stretch the vinyl, where it is necessary to stretch it strongly - heat it with air, smooth it, smooth it, cut off the excess and get what is shown in the photo.

After bending the edges of the vinyl inside the holes for the speakers, their diameter naturally decreases and it is very desirable not to miss here, because you cannot remove these bent petals - everything will immediately peel off the front surface. Measure the thickness of the vinyl with a caliper when selecting a blank for the pipes: the pipe should be two thicknesses wider. If everything is in order - we insert the tweeters, attach the wires back and put the facings in place. Please note, for show off, I painted the diffusers of the tweeters in a color called "Antique Blue", but this is not necessary. Let's look at the result:

For reference - the whole bodyaga took two rainy autumn evenings.

Author: Andrey Elyutin; Publication: avtozvuk.com

See other articles Section Speakers.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive Robot conveying emotions while reading 24.03.2022 Scientists from the Faculty of Engineering, Information and Systems of the University of Tsukuba (Japan) have developed a robot assistant for reading text messages. It can help users control their mood when reading upsetting news. This device will improve social interactions as we move towards a world that increasingly uses digital communications. An emoticon in a text message is a quick and easy way to show your indignation to someone who is late for a scheduled meeting. It often lacks the human element that would accompany a face-to-face explanation or telephone conversation. According to scientists, we are probably more upset by the fact that we, our friends, cannot realize how angry and upset we are when we have to wait for them. Researchers at the University of Tsukuba in Japan have created a hand-held robot called OMOY, which is equipped with a moving block powered by mechanical components inside its body. By moving the internal center of gravity, the robot can express simulated emotions. The prototype was created for experimental experience - this artificial intelligence is able to read and analyze text messages. It turned out that the text with unpleasant or disappointing news was accompanied by a call to OMOY not to be upset - or even sympathy for the user. The robots were designed in such a way that they could suppress not only the user's anger, but also other negative interpersonal motives - for example, change thoughts of revenge or similar negative emotions.

Other interesting news:

▪ Silicone chip for artificial retina

▪ Tesla Megapack 1,5 MW megabattery

▪ The stadium generates electricity

▪ Microhybrid boom expected by 2017

▪ The oldest magnetic record found in a meteorite

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Tips for radio amateurs. Selection of articles

▪ article Wash your hands. Popular expression

▪ article What is the gravitational radius and how large are its values ​​for various objects? Detailed answer

▪ article Head of production and technical department. Job description

▪ article Living water build a spring. Encyclopedia of radio electronics and electrical engineering

▪ article Bimetallic thermostat. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages ​​of this page

Arabic	Hebrew	Polish
Bengali	Hindi	Portuguese
Chinese	Italian	Spanish
English	Japanese	Turkish
French	Korean	Ukrainian
German	Malay	Vietnamese

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua
2000-2024