platnium speaker fix

sort of....LOL




the guts of a carver ribbon


speaker lab speaker,?.....
David Graebener
David has been involved with the design and development of transducers and systems for more than 30 years and is an authority on planar-magnetic design. David began his audio career in the late 1970s as co-founder of Speakerlab, a Seattle-based loudspeaker design and manufacturing company. As a pioneer in the development and application of planar-magnetic transducers, David joined Tom Bohlender to found the Bohlender-Graebener company in the early 1990s. David has been sought after as a consultant for transducer development, with a focus on planar-magnetic applications. David is owner of Advanced Transducer Engineering and co-founder of Solution Matrix and has completed design work for Boeing, American Technology Corporation, NCT, Pacific Car and Foundry, Carver, Toshiba, Onkyo and Eastern Asia Technology Company. David has been involved in the authoring of several patents granted or pending related to planar-magnetic transducer design and is associated
with the development of more than 130 electro-acoustic designs.











not 60" long but 57", the ribbon and magnets are the same.






bad woofer, the ring pooped off, I did fix it with super glue and RTV on both sides of the surround, had nothing to loose except 89.00$, it seams to be holding up

they seam to sound the same, but it has been 12 years since the pencil incident....LOL


mbskeam

What is with the rigged up ribbons ??

$$$$$$$$

to fix 2 of my 60" would be 800+$$$$

these cost 300.00$ for both
when I can afford to get my real ribbons done I will do it then....
then I will use these current ribbons as xtra speakers. these are 4 ohm by the way

I was going to use my "good" ribbon as a center speaker but it seams to be dead, IE open...time and corrosion/oxidization has taken its toll....

working on getting some ribbons made, all I have to loose is my time if they don't work.
I did find a metalized foil film .001 thk. where I work that is conductive on one side. at 2' it is 8
ohm, but at 5' it is 15 ohm
I sent samples of various film structures out.
in thicknesses from .0006 to .0015 in various film structures

going to reglue my magnets back on as the glue that was used 20 years ago is letting go
any suggestions as to a better glue?

and to answer your ?

I'M CHEAP....LOL

mbskeam

Cool Pictures mbskeam! I love pictures and the projects people take on. I have to admire your imagination into inside and using what is available to you. Well Done!

UGH!

UGH!

doth I offend thee.....LOL

mbskeam

ps:
I guess I want tell you about my other speakers.....
it may really make your eyes roll...LOL

going to reglue my magnets back on as the glue that was used 20 years ago is letting go
any suggestions as to a better glue?
mbskeam

DaveS uses Superglue to reglue the magnets. I used it when I rebuilt my ribbons, seems to hold well. Make sure that you get it in the right spot or you will break the magnet trying to remove it after the glue sets.

fstik

I used it when I rebuilt my ribbons,

so where, what did you use for ribbons?
and if I am looking at this right, one would reglue the new ribbon to the support. then as you clamp the 2 supports together the rods fit into the groove and this in turn pulls the ribbon to the proper tension? or do you have to pre tension or slightly loosen the ribbon????? before you mate to 2 half's together?

mbskeam