quality brand subwoofer is expensive.Explanations for this are many: it is special acoustic requirements for the housing, and a high-quality speaker, and high power output stage, and a special, very careful factory setting.
So body.At low frequencies exhibit all the shortcomings of any speaker system.The resonant frequencies lead to undesirable vibrations felt as rattling.In order to avoid improper sound subwoofer enclosure clog sound absorbing fibrous filler, but if the shape and dimensions are designed and matched incorrectly, such a measure would give only a partial improvement.
Speaker - an important element of design.Its capacity must be at least 100 watts, and the characteristics required to provide playback infrachastot.Now they are made relatively small - from 6 to 15 inches in diameter.
Collect subwoofer amplifier with your hands can be experienced ham radio has a practice of installation and adjustment of complex equipment.The case is difficult, despite the fact that modern semiconductor items have a high degree of integration.It requires not only know how to read charts and understand the principle of the amplifier low frequency, but also to possess the technique of etching circuit boards and other useful skills, including a simple enough matter how high-quality rations.
Gathered produce subwoofer amplifier with your hands, just need to determine the purpose of the device.If it is intended for use in the vehicle, the requirements for it to be one, and if the home theater - the other.
In the first case the supply voltage is limited to the value of labor power-supply system, usually 12 volts with a minus on the body.The task is simplified by the fact that the powerful power transformer, amplifier and stabilizer is not required.But the scheme will have to collect yourself.Good reviews got TDA7293, withstands high output current and provides plenty of power (100 watts) to drive the bass.
If homemade subwoofer amplifier for home cinema, the requirements of others.You can actually go on the same path and collect it in a similar way, but require a fairly powerful transformer power supply, all of which need to fit within the housing, have already installed a fairly surround speaker and bass reflex.At the same time we should not forget about the heat transfer, radiators also take their place.
There is another way of solving the problem - not to collect subwoofer amplifier with your hands, and use a ready-made scheme, for example, the amplifiers' Amfiton "or the" Brig-001 "Soviet era.You can buy them at a reasonable price, especially if one of the channels is not working.Easy modular, ready to adjust the power supply and create all conditions for the use of this high-quality equipment, and we can not break his head over how to make the amplifier for the subwoofer.
LC-limiting filters the frequency range of the middle and upper frequency should be placed at the input and at the output immediately before the speaker.Putting subwoofer amplifier with your hands or using a ready-made scheme, care should be taken and on the limitation of noise and durability and reliability of the electronic device that is sensitive to overload.
And I want to say that we should not too intrusive to demonstrate the results of their labors neighbors, they do not appreciate.
