PDA

View Full Version : what are these?



mbask
03-08-2007, 10:58 PM
Can anyone here identify these?... they came out of a Fisher console stereo. I have a fairly extensive EIA Codes list but the numbers don't match any that are on the list.
thanks for any feedback

rs237
03-09-2007, 12:28 AM
Hello,

those are Isophon Tweeter of 1958 from Germany.

look here :

http://www.lup-berlin.de/archiv/Katalog/index.html

regards

juergen

Titanium Dome
03-09-2007, 05:51 AM
One has rubber grommets around the mounting holes and one doesn't. What's up with that?

rs237
03-09-2007, 06:20 AM
In old tube radios these loudspeakers were swinging hung up by means of the grommets. Actually both loudspeakers should possess such grommets. These are however only put in and are lost therefore easily. The whole Holzgehäuse of the radio served as resonance body. A firmly bolted loudspeaker would have obstructed this.

regards juergen

i hope you understand this, its from online-translater

mbask
03-09-2007, 12:04 PM
For info everyone

Dome:.... The reason is ...that driver was on the side under the phonogragh. oil or some kind of fluid had traveled (over the years) down the baffel and seeped into the rubber grommets causing them to become a sticky, messy mush. I wiped it clean with a little acetone. Thankfully the "fluid" didn't ever reach the cone surface on the inside of the speaker.

thanks.. you guys in Germany:)