Mixed connection of acoustics to the amplifier with two bridged channel outputs. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Speakers
Comments on the article
Let's consider the connection scheme to the speakers of an amplifier with two bridged channel outputs (Fig. 18). Dynamic heads BA1, BA2 form the loudspeakers of the left and right stereo channels. They are conventionally shown as broadband. The BA3 low-frequency head is connected between the outputs of the left and right channel amplifiers, while the signals are summed and the head reproduces a mono signal.
In this connection scheme, it is mandatory to have two high-pass filters for stereo channels and a low-pass filter for the sum channel. Their task is to exclude parallel operation of the heads and overload of the amplifier. Usually, first order filters (C1, C2) are used for stereo channels, second order (C3L1) or third order for the total. They are calculated in the usual way.
The frequency of the section and the order of the LPF are selected within the range of 80 ... 200 Hz, depending on the location of the low-frequency head. If it is located in the rear of the passenger compartment, the crossover frequency should be chosen as low as possible, and the order as high as possible, to avoid the subwoofer reproducing the "voice" range. However, this requires the manufacture of relatively large inductors. It is undesirable to use ferromagnetic magnetic circuits in their design, since the distortion caused by the inevitable magnetization of the core significantly degrades the sound quality.
Fig. 18
Author: A. Shikhatov; Publication: bluesmobile.com/shikhman
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 Non-volatile flash memory B4-Flash
04.03.2012
Japanese flash memory specialist Genusion and ROHM Group have announced that they have signed a licensing agreement. Its subject was B4-Flash flash memory technology, created by Genusion specialists.
The concluded agreement will become the basis for cooperation between the two companies in the development and mass production of B4-Flash memory chips. Genusion released its first serial products back in October last year. In fact, the development and mastering of the corresponding technological process at the ROHM facilities has already been completed.
The basis of the B4-Flash memory is the B4-HE mechanism (injection of "hot" electrons as a result of interband reverse bias tunneling), developed by Genusion specialists. This approach solves one of the main problems associated with traditional flash memory, allowing it to significantly increase its write speed.
B4-Flash technology provides not only high data transfer speed, but also high reliability. Write and erase operations are carried out in B4-Flash crystals 5-10 times faster than NOR flash memory allows. The new memory has a low cost, higher density and resistance to storing recorded information at high temperatures. B4-Flash products can also store data for 20 years at 125°C after 10 erase/write cycles. The memory capacity of the crystals is 512 Mbit and 1 Gbit.
The agreement provides for the release of systems-on-a-chip and other ICs with built-in B4-Flash memory under the trademarks ROHM and Lapis Semiconductor, which is part of the ROHM group. The partners expect that the new memory produced by ROHM will be used in car navigators and smartphones.
|
Other interesting news:
▪ Self-learning electrical network
▪ 3D printing inside the human body
▪ Intel Tunnel Falls silicon qubit processor
▪ Elephants feel bad at the zoo
▪ LTC5508 Subminiature Broadband Power Detector
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ site section Electric meters. Article selection
▪ article Twenty-three years! And nothing has been done for immortality. Popular expression
▪ What do rodents that can't chew eat? Detailed answer
▪ article Deputy Director for Human Resources. Job description
▪ body vibration sensor article. Encyclopedia of radio electronics and electrical engineering
▪ article Overhead power lines with voltage above 1 kV. The passage of overhead lines through the plantations. Encyclopedia of radio electronics and electrical engineering
Leave your comment on this article:
All languages of this page
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua
2000-2024
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese