Tag Archives: Subwoofer
The AVI 10 inches active subwoofer special design for Home Theater and multimedia surround sound. In the active speaker amplifiers are directly connected with their drive units are to be controlled much better. In comparison, passive designs are poorly controlled and arrow (often confused with low by less experienced listeners amplifier especially when using low power) makes it difficult with a U-boat. This is not the case with the seamless ADM9T specially designed subwoofer with them.
The principle of Frequency small size (or ELFTM)  is surprisingly rare, with a manufacturer that I found their use in subwoofer. I think it’s a different, but I’m not sure that the same method is used – even if the principle is the same. Since ELF is a registered trademark, I will not use the term in this project, but my version is for electronic assistance systems Subwoofer (EAS). I thought briefly Principe subwoofer (ESP).
Consumer electronics manufacturer BEHRINGER introduced in 2012 range of products, many of which are destined for IOS devices such as the roof Eurosound. The products range from a Soundbar-and-sound subwoofer, a wireless system for its part iPod, a portable Bluetooth hands-free system, a sound system with integrated iPod dock and much more. The company has well-known Inuk and his new series at CES provided.
The toolkit design subwoofers Fab Engineering is an easy to use but powerful software for the design of subwoofers. Its friendly interface tab, you can choose the box design, the design of the port, the housing design and selection tools woofer. It runs on Windows XP, Vista and Windows 7.
I was sub for one that pretty much it is evident that the response to 20 to 25 Hz with a power-3dB important flexibility to form a homogeneous mixture between the Subwoofer and my main speakers existing, attractive design, to ensure research, as a speaker could double is (if I decide to stereo subs), all in a package that does not do half as much space in my bedroom home theater. I do not think it too much! And you?
Dan McGrath of Great Britain sent an e-mail with a link to his latest project DIY subwoofer. For the design of the subwoofer Dan has to use a sixth case isobaric Order Series-Tuned Bandpass. The basic structure of a band-pass enclosure of order 6 isobaric.
The case was made using medium density (MDF), which is inexpensive and easy to handle. To the rigid housing, Dan doubled the MDF.
TDA1562 chip itself is a pretty decent design, it can play nicely, but certainly not on the table at home in a bad power supply. At the beginning of the system starts with ATX power supply – and in spite of all branches of the proper load, you simply lose their heads with this amplifier. Power Line 4A of capacitor 10000uF also proved to be not sufficient, the security system voltage dips g?upia?y at so short that the meter was not able to catch them. Only the battery up to the task challenge and began to shake the cube environment, no longer be mute, and “click”.
The output stage is perfectly complementary to the input to output. There are eighteen transistors, just to win the game, with the exception of the step voltage class AB bias to implement. This complexity makes the open loop distortion is low, so that only a small constant amount of feedback, as dictated Otala around the entire amplifier 20 Hz to 20 kHz.
A major problem of designers of audio system requirements faced uneven output power from satellite speakers and a subwoofer is. Typically, the subwoofer output requires four to five times for the right balance. With only 5V is available, a variety of audio power amplifier solutions were used, each with its own drawbacks.
The most common solution was to use two stereo amps of output power. A hard disk drives and the other satellite amplifier to the subwoofer. The satellites use 8? speakers, while the subwoofer is used 4? speakers. The result is a solution of 2.1 with 2 x 1W satellites and a subwoofer 1 x 2W. This solution is simple, it does not provide enough power for the subwoofer to produce a significant amount of bass. In addition, the use of 8? speakers for the satellites do not maximize the amount of satellite sound pressure level (SPL). Therefore, the overall volume of this approach is limited.
The main problem with the design of the subwoofer woofer stereo amplifier with a total production, is that the signals from the left and right channels, sooner or later, are summarized. As a result of the addition only is the separation between channels is minimized and violates the idea of ??stereo systems satellite. The most effective method of summation today – active signal smesitelyami – filters with high input impedance, which is often used by field-effect transistors. To improve subsequent increase in the amplitude of the signal cascade.
I tried to do a different route – the most to weaken the signals from and to their addition, as late as possible before the signal with high sensitivity TDA 7240 – 46dB chip-amp. The second chip TDA 1517, serves as a medium-frequency driver.