Altec Woofer Cone Codes

[mah]

EV-ALTEC Document:

http://i1295.photobucket.com/albums/...psd5b339b7.jpg

http://i1295.photobucket.com/albums/...ps6c3d266a.jpg

http://i1295.photobucket.com/albums/...ps47e45191.jpg


Annotations on this page are by me.

http://i1295.photobucket.com/albums/b637/mah17/IMG_zps5f141b75.jpg


Marshall.

[Altec Best]

I just posted those EV docs in the Library. Thanks to endeeinn for Sharing !

[magnarc]

Fascinating indeed.
Have a look at this example. It appears to have both an altec original cone number (20876), and some other stamp (502 749).
I'm not sure what to make of it.

Ok now that takes the cake.......

Whats also interesting there is that someone has 'blacked' out the red surround!

Is it possible its a date or OEM code for the cone itself?

[Old Guy]

90% certain those are QC stamps.

[magnarc]

Why didn't we think of that! Duh!

[sarlau]

Here's a message from the person with the 803A, it's from a Capistrano 831A that was purchased in 1958.

"HI, I was bothered by this so I called the man I purchased this from and he has the original receipt with all serial numbers on- he ordered it directly from the factory in 1958. He personally told me that no work has been done, it is all original- voice of the theater speaker."

Real nice person to talk to. I'm tempted to see if I can talk to the original owner and get the s/n's.

[magnarc]

I'd say Old Guy has nit the nail on the head, and well I was wrong bout it being non original. This is from the 50's, thats a long time ago and Altec did many things that we are not aware of, like this, until they pop up and collective minds figure it out.

[Old Guy]

Essentially, if I remember right, QC was done with a batch order # which was the order issued for production. Then there was a "sequence number", and last a QC stamp.

If a multiple bad product showed up, the rest of that batch and sequence could be pulled and checked.

All this stems from a conversation 42 years ago at Altec. So take with a one pound box of Morton Salt.