IMF International TLS 80 Speaker Restoration.

well I rewired the voice coil differently than above. I decided that the wire inside the bobbin might hit the magnet when moving.
So i did as they were before. I just hope that it holds up. I was going to use three wires braided but will use this one for now.

I uses Aleens glue to repair some loose spots on the bobbin to diaphragm . Then I used Testers clear lacquer spray to insulate the bare wire and also over the entire coil for added protection.

I hooked it up to my LCR meter that also has 120z 1khz and 100 hz test tones and the 1 kHz tone played perfectly. So this
speaker is brought back from the dead.

Next I will instal the woofer into the cab and test it with music.

Nashou

I was thinking the same thing. Its just what I had laying around at the time. I plan on taking the other driver apart too and make sure there isn't any 
of that crystalline growth in the voice coil chamber. The rebuilt speaker pushes in with pure silence while the one that was working has some slight scratching going on.
I think these were stored in a damp garage for many years.


But now that I know i can rebuild these I'm not too worried about going in again to do it right. I think I might actually use the original in there and the new wire
will connect to it . I used that magnet wire because it has to be thin to drop down between the bobbin and the spider mesh. I don't want to take the rubber surround off
to have easier access tot he braid wire where it comes into contact with the voice coil. to difficult to try to reach a solder iron in-between the basket frame
and woofer cone which is styrofoam. Touching that with a hot iron will melt it instantly and even getting close would be risky.

Nashou

Yes it is a Kef B139. Is there a rebuild kit for it anywhere? It be cool if there was. Just the voice coil and spider would be great.

Nashou

I see all the bay ones are 4 ohm. For the IMF TLS 80's they used 8 ohm versions. Not sure I want to take a chance or rework anything else.


I'll just get some braided tinsel wire. A few vendors on eBay or I might use Solder Braid Wick. I have a few sizes.

PS: Wish I would have thought of the solder braid earlier , i have one that is very flexible.



Nashou

Well began the HF-2000 super tweeter restoration. I wasn't sure how to approach this.....so I just dove in !

Here is the way it looks after you peel the tweeter off. you have to work from the front because there is a wood box built around the tweeter and its glued in.
To remove the box would definitely damage it and the main baffle .




I used an X-acto knife and some sand paper to remove the double sided tape or glue they used.





Now onto the voice coil-diaphragm assembly . There was glue on this hard cardboard holder that the plastic coil assembly
was attached to. I used a toothbrush and denatured alcohol and X-Acto knife to rub and scrape away most of it. Then
I used a wire bobbin to act as a "Jig" to hold the cardboard holder and coil assembly up off the table( so as not to crush it) and in place while
I applied Aleen's glue and allowed it to dry. Electrical clips were used to hold it all in place .
This will be illustrated in the following pictures.






Thats all for now. Off to work.

Athanasios