Tip 1: How to make a shout

horn - a simple tool to increase the volume.A simple shout can make from paper material.It consists of two parts - the funnel and the neck.Get started with the manufacture of the socket.
Guide
1
Take a thick paper for office equipment.Draw on a sheet of paper with a base petal 3.2 cm and a length of 22.4 cm. The sides parallel to the base, of 9.5 cm, and has a slight rounding.Each petal has a bell on the length is not a straight line, and a smooth transition.
2
Cut a template and draw it in pencil on a path to get 10 petals.When you cut the workpiece, leave each of them on the left side of the interval width of 0.5 cm. This segment is needed for bonding the next tab.
3
Cut edge in several places, so it can be easy to bend.Use no ordinary paper, and carpenter's glue.It is better not to glue a chain one after the other and in pairs, then pairs of glue.Allow to dry each glued seam, or when sizing these petals old joints may unravel.
4
mouthpiece neck has a conical shape.Draw
a straight line length of 35 cm. The compass set into the base line and draw an arc of a radius of 7 cm, and the other - 31 cm. On the one hand, leave the edge width of 0.7 cm for the gluing.Glue the cone.After drying make cuts of 10-12 to 1 cm in length with a narrow side for gluing nozzle cone.
5
Socket convenient to glue on a wooden billet with a diameter of 2 cm. To remove the finished pipe, is screwed onto the disc smeared with glue strips of paper width of 4 cm, while the thickness of the pipe wall reaches 1.5 mm.After drying, remove the pipe from the ingot.
6
incisions inside the cone grease glue and insert the tube.In addition, seal the top strip of paper around.
7
Fold the finished part of the horn so that the neck was part of the inside of the socket to a depth of 0.6-1 cm. Gently podmazhte edge of the socket for the entire circumference of the carpenter's glue, bending back the finger into the throat.Cover the outside, and after drying - inside layer of liquid wood glue. horn become hard.If desired, can be covered with varnish or paint the horn.It will significantly enhance the sound.At the same scheme can be made from a tin horn, only the seams need to be able to connect by soldering or the castle.

Tip 2: How to make a speaker

Older people remember well the black gromkogovoriteli- "plates."Make the same device, for example, for interior decoration in the style of the first half of the twentieth century can be today.And it will really work.
How to make a speaker
Guide
1
Take the usual embroidery frame.Manufacture of black paper cone, having a diameter equal to the inner diameter of the hoop, and a height of about 50 millimeters.Secure the cone within the frame in any way.For example, for this purpose it may be provided with a width equal to the thickness of the hoop.
2
Make a period of normal wooden or plastic drawing line, the length of which is equal to the diameter of the hoop.Take electromagnetic phone with screw-top cap, for example, the TK-67.Unscrew the lid of it, remove the membrane.Strip the middle of it with sandpaper to shine.Surface using sidecutters or sandpaper.Then straighten a paper clip, which is also using sidecutters or sandpaper.Solder clip to the membrane so that the membrane in the alignment, it could come out through the central opening of the lid of the capsule.If the central opening at the cover is missing, drill it.Place the diaphragm in place, and then tighten the lid.Blasting place strictly in the middle segment of the line and glue, pre-connecting the wires.Wait until the glue dries.
3
Shorten leaving the capsule clip to such a length that after installing the line with him to the hoop until it lightly touches the cone.For it is not pierced cone, wrap it with electrical tape.
4
Attach the line in any way across the hoop.The clip should pull over to a slightly cone-cone.Connect the cap to the translation (in any case, not to the power!) Outlet.The speaker should sound.
5
Saddle loudspeaker stand any design or provide to its strong wire loop for wall mounting.
6
If you want to sell a speaker, for example, at auction, be sure to specify that it is a modern copy.Do not give him for the moment the product during the first half of the twentieth century, because such actions can be classified as fraud.