Jump to content
The Klipsch Audio Community
Sign in to follow this  
khorndog

Stephens Tru-Sonic Corrosion!?!?!

Recommended Posts

Just pulled a Stephens Tru-Sonic out of a 1954 K-horn..  anyone ever see this before???  Still sounds great! Cone and surround in seemingly great shape as well.  

 

 

IMG_1576.jpg

IMG-1572.JPG

IMG_1573.jpg

IMG_1568.jpg

Share this post


Link to post
Share on other sites
Posted (edited)

no, maybe the salt ocean air at some point?  This is also from a '54  I'll let others chime in...

 

 

trusonic mounted.jpg

trusonic ad.JPG

Edited by hanksjim1
edit

Share this post


Link to post
Share on other sites

I brushed off the loose stuff and it looks a lot better... 

IMG_1583.jpg

Share this post


Link to post
Share on other sites

Worst corrosion I've seen.  We just emptied our truck trailer of artifacts for a long-overdue inventory.  This stuff has been in there 20+ years in the Arkansas heat (and a little cold).  Definitely high humidity!  Bottom center in the first pic is the worst.  The second pic shows the zinc & yellow chromate plating on the front plate going south.  It is actually turning to powder.  But yours takes the cake.  It's likely due to poor surface prep prior to painting.

 

Your pic of the non-corroded driver looks like a back plate/magnet shift (no longer concentric).  Amazing that it has not locked the voice coil!

20190726_101619.jpg

20190726_101521.jpg

  • Like 1

Share this post


Link to post
Share on other sites
Posted (edited)

You're right JRH...just a pic from an Ad for a '54 to show corrosion extent for a similar vintage driver...I decided not to buy that one...LOL

 

I did end up with this one, also from a '54

Trusonic xover pic.jpg

Edited by hanksjim1
added pic

Share this post


Link to post
Share on other sites
On 7/30/2019 at 9:53 AM, JRH said:

Worst corrosion I've seen.  We just emptied our truck trailer of artifacts for a long-overdue inventory.  This stuff has been in there 20+ years in the Arkansas heat (and a little cold).  Definitely high humidity!  Bottom center in the first pic is the worst.  The second pic shows the zinc & yellow chromate plating on the front plate going south.  It is actually turning to powder.  But yours takes the cake.  It's likely due to poor surface prep prior to painting.

 

Your pic of the non-corroded driver looks like a back plate/magnet shift (no longer concentric).  Amazing that it has not locked the voice coil!

20190726_101619.jpg

20190726_101521.jpg

Thanks for the  feedback and pics.. 

When you say "Your pic of the non-corroded driver looks like a back plate/magnet shift (no longer concentric)."  Which are you referring to? And if you mean my driver when brushed... what are the indicators? 

Share this post


Link to post
Share on other sites

You can see the where the magnet is not sitting flush with the lower housing...

trusonic ad.JPG

Share this post


Link to post
Share on other sites

I think it is an optical illusion from the reflection of the flash.

Properly aligned with no overhang.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...