just aquired 40-165 - Printable Version

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just aquired 40-165 - Guest - 12-27-2007

Hello all,
I just aquired a Philco 40-165 and it needs a lot of work... so I'm starting on the easiest part - reconing the speaker... the problem is that I can't find any repair kit that would work, mostly because I am not sure what would work. Looking around the internet I was given part numbers like 36-4089, 36-1479, 36-4086, 36-4111, and 36-1480... but I just need to know what kind of voice coil and reconing kit I need! Oh the internet can be a vast, confusing thing...
thanks,
Ralphie

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- Ron Ramirez - 12-27-2007

Hi Ralph, and welcome!

What size is your speaker cone? You might look here:

http://www.electronix.com/catalog/advanced_search_result.php?keywords=11-75

http://matelectronics.com/prestashop/en/search?orderby=position&orderway=desc&search_query=speaker+cone&submit_search=Search

Note that MAT even carries external spiders for speakers!

Carefully measure the diameter of your speaker cone...and the voice coil...you'll want to leave a small amount of paper around the circumference of the voice coil, for gluing to the new cone.

Don't forget to remove the dust cover and shim around the voice coil when installing the new cone.

This subject is currently being discussed at http://antiqueradios.com/forums/viewtopic.php?t=76730 ; you might see some interesting info there as well.

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- Guest - 12-27-2007

thanks so much.
I measured, and it's a 10inch diameter, and the voice coil about an inch. I had already gutted it, I'm pretty sure I remember how to recone a speaker from college, it's just finding the parts online thats a tad difficult.
So I can buy any kind of spider, voice coil, and/or cone etc. online (as long as it's the right size of course) or does it have to refer to this specific make and model?

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- Ron Ramirez - 12-27-2007

The important things are:

* cone diameter;
* cone depth;
* voice coil diameter.

If the speaker is completely torn apart and needs a voice coil and spider, you will need the proper size external spider, also.

In addition, the original voice coil had an impedance of 3.5 ohms. Most voice coils you will find will probably be 8 ohms; which means you will have to replace the audio output transformer in the radio with a unit that matches the output to your speaker's new voice coil.

If the depth of the cone is incorrect, the speaker will not work correctly (even if you can get it all glued together).

Finally, yes, you can use any cone as long as the depth and diameter are correct. It is highly unlikely that one will stumble across very many NOS (new-old-stock) Philco speaker parts.

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