Kutztown finds

[ekimetsok]

Slideshow of another remarkable Kutztown show here: http://hagstar.phanfare.com/slidesho...ID%3D128105239

[stusnyder]

I have near completed the reconing. First step was to measure from the spder to the top of the cone, and the spider diameter, to find a sutiable replacement. Next was removing the felt over the screws, then the screws and retaining ring. Then unsolder the leads to the voicecoil.

[stusnyder]

Next was to take out the screw holding the spider on. Here sometimes you have to be careful if the spider is made out of cardboard, which this one was.
Then you can lift the entire cone out at this point. Then according to the voice coil size, you either remove all the old paper from the voice coil, or leave some sourrounding it, to match the cone opening.
The new cone I selected turned out to be a higher profile than needed, but the voice coil opening was perfect. So I removed all the paper from the voice coil. Next I drilled a hole in my bench top, where I could stick a pencil in, and put the point of it thru the spider opening, then set the new cone over the voice coil assembly, centered it, and glued. Left sit overnight.

[stusnyder]

The next day, I checked the fit. The cone was too high. So I removed the rubber surrounding the cone, and flipped it. This gave me about a 1/4 inch drop. You want the cone to be close to flush to the top of the frame as possible. If the cone sticks out over the top, you will force the voicecoil to bottom out, and if it is too short, your voicecoil will not engage correctly.
Once I seen flipping the rubber surround will put the cone closer to where it was suppose to be, I glued it and left sit overnight.