Even in the recent past 10АС9 sound system, each sound column which contains two versatile dynamic loudspeaker (one for low and medium frequencies and the other, with a diffuser of smaller diameter for higher), it was considered perfectly acceptable for a home stereo. And electrical parameters it was on a high level: power 10 W, impedance DC current 4 ohms, audio frequency response 40 to 18,000 Hz. With the advent of so-called Hi-Fi equipment these speakers have become increasingly depart among the almost Museum pieces.
IF THE BOARD IS CRACKED
To eliminate the crack in the middle of the Board is not so easy, especially if the Board is very wide. Here can help out the following. On both sides of the crack must be nailed two small blocks, fill the crack with glue (carpentry, casein or PVA) and then a clamp to compress the Read more…
The homebrew is often used segments of rubber hose as a flexible coupling when connecting coaxial shafts, particularly in those cases where the rotation speed is small, and the shafts are not strictly coaxial. This way I decided to apply when I built the frame of the greenhouse from the chimneys of the old clamshells.
I offer a homemade device allows you to control voltage vehicle electrical system. In particular, that’s all right — the battery is charged and generates the required 12-14,8 V, the signal indicator is green light. At lower voltages the light turns yellow, and when elevated — red led.
In the repair of equipment there are times when a small detail falls into such a place, where to get it very difficult. And if a piece fell inside some mechanism? Then the continued operation is fraught with serious breakages.
THERE, ZENICA EYE. Our vision — natural stereophotography: the image of the same object on the retina varies, as each “eye” sees the object from a different angle. And only in the brain the signals from the retina from these different images are processed into one three dimensional picture.