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Old November 1st 20, 08:28 PM
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Default How to repair electrodynamic speaker
Hello bobby
KC9IHK
These types of speakers can be repaired with some patience and a lot of time.

I repair them easily, replacing the main coil that forms the speaker's magnetic field and also works as a filtering coil in the power supply, additionally I replace the "anti-hum" coil and the small coil of the speaker's cone. I replaced the old broken paper cone with another one with better characteristics.

Attached I am sending you some photographs of the step by step.
It could help you if you decide to carry out this repair, finally everything works very well and the vintage radio will not lose its authenticity and originality.

regards.

Von Klauss
Last edited by Von Klauss : November 1st 20 at 09:02 PM
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Old November 1st 20, 08:31 PM
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Default How to repair electrodynamic speaker
Here I am attaching more pictures of the procedure to repair this kind of speakers.

Greetings.

Von Klauss
Attached Thumbnails
What to do about the center tap....-electrodinamic-speaker-6-peque%F1o-.jpg  What to do about the center tap....-electrodinamic-speaker-7-peque%F1o-.jpg  What to do about the center tap....-electrodinamic-speaker-8-peque%F1o-.jpg  
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Old November 1st 20, 08:45 PM
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Default How to repair electrodynamic speaker
Hi all.

I attached shipment diagram for connecting an external speaker in radios with electrodynamic speakers and other related circuits.

Regards.

Von Klauss
Attached Thumbnails
What to do about the center tap....-formaleta-bobina-parlante.jpg  What to do about the center tap....-diagram-connecting-external-speaker-radios-electrodynamic-speakers.jpg  What to do about the center tap....-electrodinamic-speakers.jpg  
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Old November 1st 20, 08:59 PM
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Default How to repair electrodynamic speaker
I attach more pictures of the speaker installed in a HALLICRAFTERS S-20R radio that worked properly for another 100 years !!!


regards.

Von Klauss
Attached Thumbnails
What to do about the center tap....-vintage-speakers-3-.jpg  What to do about the center tap....-vintage-speakers-4-.jpg  What to do about the center tap....-vintage-speakers-2-.jpg  What to do about the center tap....-vintage-speakers-1-.jpg  
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