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Speaker Cone - Printable Version

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+--- Thread: Speaker Cone (/showthread.php?tid=15724)


Speaker Cone - Bill Bacco - 11-21-2016

Does anyone know of a good source for replacement speaker cones.  The one I have on my 81 Jr. is about 6" (5 3/4) and cracked in several places down near the coil.  I believe the coil is still good, since the speaker still works somewhat but because it is so dry and hard everything is kind of muffled.  I could glue it where it is cracked but that won't solve the stiffness issue.

Thanks, Bill

RE: Speaker Cone - Jim Koehler - 11-21-2016

Give Sound Remedy a call...

I've known Rich for about 30 years and I've always got top quality work from him. His prices a very reasonable ande his turn around is good.

http://www.soundremedynj.com/

...Jim

RE: Speaker Cone - morzh - 11-21-2016

Rich just has done a super job on my 16s speaker, and his rates are very reasonable.

RE: Speaker Cone - Bill Bacco - 11-22-2016

Well I contacted Rich and he doesn't sell parts.  He just does reconing and wants $40 to recone the speaker.  I really don't want to spend that much on this radio and am looking to do it myself.

I'll ask again, does anyone know of a source for cones or for speaker surrounds?  I have found some on the internet, but I'm not sure their size is correct.

Thanks, Bill

RE: Speaker Cone - KCMike - 11-22-2016

If you want to try to DIY. Might look at this article.
http://www.nostalgiaair.org/References/Articles/TheFlash/Flash03.htm

RE: Speaker Cone - Bill Bacco - 11-22-2016

Interesting article.  Thanks for the pointer.  I still need to get some sort of speaker surround or make one some how.
That is the area of my speaker that needs the most attention.

RE: Speaker Cone - morzh - 11-22-2016

I did not get this article. Not the math, but....at what point the corrugated part is attached? Nothing there about it. Then....how do they go about curring the tip of the cone to attach the coil?

RE: Speaker Cone - Mondial - 11-23-2016

Morzh, the article is describing making cones for the 1920's style magnetic speakers, not the later dynamic type.

These cone speakers has no surround but were full floating, being supported mainly by the center mechanical linkage. The linkage connected to a metal vane surrounded by a high impedance coil and placed in the field of a permanent magnet.

https://www.radiolaguy.com/images/speakers/CrosleySuperMusicone.jpg

RE: Speaker Cone - morzh - 11-23-2016

Oh....are you talking about these? because if yes, this article does not help much. We are dealing with 81 speaker.

http://www.antiqueradios.com/forums/viewtopic.php?f=15&t=203893

RE: Speaker Cone - Bill Bacco - 12-20-2016

Well I ended up doing my own repair.  I was able to salvage the rigid part of the cone, bought a rubber speaker surround and glued it all together.  It really sounds good now.  Below are some words and pictures showing the process:

Bill

Repaired bottom of cone near coil with RTV Silicone Gasket Maker.  Verified clearance of coil in frame prior to silicone drying.
   

Top view of cone after repair
   

View of empty speaker frame
   

Used compass to mark where cone needed cut to match speaker surround inner diameter.
   

Applied glue to inner edge of speaker surround
   

RE: Speaker Cone - Bill Bacco - 12-20-2016

Mounted cone in speaker and centered surround in frame while glue was wet.  Checked that speaker coil clearance was still good.
   

Speaker after glue dried
   

After glue on inner edge of surround dried, glued the outer edge to frame and the spacer that covers it.  Here is a picture of the repaired speaker.
   

RE: Speaker Cone - morzh - 12-21-2016

Looks HI-FI Icon_smile

RE: Speaker Cone - Kenneth F. Besso Jr. - 12-21-2016

look on E-Bay,,,ever once in - while