You will need
- glue "Moment";
- - cardboard;
- - screwdriver;
- - scissors;
- - Hairdryer.
Unplug the subwoofer from the amplifier. Remove the grille from the speaker and Unscrew the mounting screws on the speaker. Carefully remove the speaker from the enclosure, disconnect the speaker wires.
Inspect the speaker cone, make sure that the flexible is not damaged insights of the voice coil.
Using scissors, cut out thin cardboard patch of a suitable size so that it's at least an inch in each direction overlaps the hole. The cardboard will fit any, you can use a cardboard box from chocolates. Very often the form of the diffuser is formed by a surface of double curvature. In this case, you can make 2 or 3 patches which is better to glue to one another overlap.
Align the edges of the damaged part of the diffuser from the back side soaked with glue "Moment", the paper material of the cone and wait till the glue dries.
Prepare pre-cut patches. Liberally glue the damaged area of the diffuser from the back side and immediately apply the patches in turn. The goal is to saturate the glue join the parts.
Take the patches from the diffuser, but not remove them. Wait 20-30 seconds and apply the patch back. Retighten them to the diffuser from the back side by placing a cushion of cotton wool or synthetic padding inside the basket of the speaker. Make sure that the diffuser wasn't tapped on the place of gluing, in General, find the optimal clamping force patches, maintaining the initial shape of the diffuser.
A day remove from the cart dynamics support cushion and see how the glued connection. If you find not glued region, hold the nozzle of a tube of glue "Moment" to the gap, gently press on the tube and press it in a little bit of glue. The goal is to eliminate chatter during operation of the speaker. Gently heat the glue seam with a hair dryer until the glue boiling, take a Hairdryer and pinch the place of gluing. Hold at least a minute after the glue is grabbed, and his strength will be enough to hold the patch.
Gently move the diffuser in and out. Make sure that when driving it does not touch the coil for the magnet.
If necessary, replace the o-landing gum, connect to the speaker speaker wires and install it into place.
Make a test power on with low volume, make sure that when working there is no bounce. Gradually increase to maximum volume, listening carefully for the absence of resonances. If no sounds are detected, install the grille.
The equivalent volume of the subwoofer is the volume of air, the elasticity which is comparable with the elasticity of the suspension subwoofer. This value is determined by the stiffness of the suspension and the diameter of the speaker cone. Disco speakers is exactly the kind of thing where unlike choosing speakers in the car makes sense to pay attention to the size of the magnet. Especially if You are interested in powerful sub.
For this it is necessary to have a large diffuser or allow it to move within a large stroke. Conventional subwoofer diffuser is quite easy to achieve acceptable efficiency, and to achieve a low resonant frequency suspension should be soft. Soft suspension, in turn, means a large equivalent volume Vas, that is, a speaker requires a large enclosure.