Jump to content

KG4 polyswitch

Recommended Posts



I just picked up some KG4s that I'm refurbishing.


I've read a lot of different views on the polyswitches.


My understanding is that the old version of the KG4 had no polyswitch, but had ferrofluid tweeters.


Mine is the newer design that has no ferrofluid and has the polyswitch.


I like the idea of keeping the protection in place and thought it would make sense to replace them.


The old polyswitches still measure .5 ohm which is correct.


The new ones I ordered (TE Connectivity Raychem RXEF050) from parts express, however, both measure .8 ohm, which is a 60% variation.


So, should I leave the old ones in?  Should I find a better replacement that is in spec?


What are your thoughts?


Link to comment
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.

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.


  • Create New...