Speaker binding posts with plastic covers

Can you not just unscrew them? I think the tabs on the two pieces of plastic 'covers' are there to facilitate that.

They aren't for personnel safety and not required by any code, they are to protect your amp from accidental shorting which is the most common cause of amp failure.  (Everyone says "it just failed!!!").

Usually you can unscrew them with your fingers and put a spade in. 

Jerry

If they just unscrew, then they are very very tight. I'll get some heavy gloves and try again. 

If all else fails, send an email to the manufacturer?  

just unscrew... they may be screwed on tight from the factory,,, work them loose with a firm but gentle hand

They unscrew, but not the whole thing. The spade actually goes between the bracket looking portion. If you are trying to unscrew the entire thing you will break it. Just unscrew from the top of the connector. Should unscrew pretty easily,

They DO NOT unscrew! You CANNOT use spades with these.

The crimper is for the bare end of a multi-strand wire. It ’melds’ (by crimping pressure) the individual strands into a semi-solid strand to then insert (like a banana pin) into the connector. (cut your spades off?)

there are two torx set-screws on the side of the connector. Tighten them to hold the now crimped wire end within the connector.

To remove wire: simply loosen the two set screws.

The solder is for the other end, inside the enclosure before tightening in place. You can solder the wire end after crimping it if you want to.

.....................

This $12. gizmo looks a whole lot like their $166. crimper

https://www.mscdirect.com/product/details/28718872?cid=ppc-google-&mkwid=%7Cdc&pcrid=&rd=k&product_id=28718872&gad_source=1&gclid=CjwKCAiA1MCrBhAoEiwAC2d64bb0AcvdS-hT1LOT4TEWddemjOD_s_RomLrA7dEcAjJwf2QyKXzsLRoCgzYQAvD_BwE&gclsrc=aw.ds

These 5 way binding posts unscrew (the type you and others are thinking of),

• Accepts up to 8 AWG wire, banana plugs, forks, spades, and speaker pins

they are ’mini’ size, smaller outer diameter to fit where/when nearby obstacles prevent the larger outer diameter of standard ones.

not sure, your spades might be too large for these mini sized ones.

IF your speaker cables are expensive, the connectors on the Krell could be changed

There are Spade to Banana Adapters, here's one, must be others

@rfprice

Those speaker posts look pretty much identical to the posts that came on the Parasound A21+ which I owned.  If the same, just unscrew the cap as you would most binding posts.  The only semi-difficult thing was figuring out how the spade connected, as it needs to be at a certain angle.  Once figured out, it holds the spade exceptionally well.

I doubt Krell would adopt a different, less convenient binding post, at least for US sales.

people are telling you their experiences with their connectors that do unscrew, like mine .....

the type you posted DOES NOT unscrew. read the full description

another spade to banana adapter, 

I sent an email to Krell yesterday. Their response: "They just unscrew." So I'll have to just unscrew them. I'll try some channel lock pliers. Do you think a blast of Deoxit might help loosen it? 

@rfprice 

Now that you unscrewed them once, they should be good. And I don’t believe Deoxit has any lubricants in it.

All the best.

I have similar situation and all I did is just busted plastic covers leaving metal screw caps. They don't hold up tight and within the time they will twist off.

Later I've replaced them with brass nuts

@curiousjim Deoxit F5 is specifically designed for switches and has lubricant. Any other Deoxit is also similar to penetrating oil 

Don't use solder on speaker wire, for the same reason you don't use it on 200A electrical connections.  It makes the wire brittle and is low conductivity. Always crimp.

Most people won't agree, but I would probably just replace the binding posts.  I make my own binding posts but they are low mass and very similar to these from KLEI.

@czarivey 

Hmm,  I must have misread something.  Back to google.

Thanks.

@rfprice 

Again, assuming they are like the speaker posts on the A21+ I owned, they were the best speaker terminals I have used.  Without having to yank them vice tight like on other speakers posts on a handful of amps I have owned, they held my speaker spades with an iron grip.  Part of the plastic holds the spades so they will not rotate.  Once you see how the spade needs to fit into the terminal, you are good to go.

I hope this helps🙂

BTW, if the top won't unscrew, maybe it's completely unscrewed! Try going clockwise and see if the top turns.

imhififan

yes, you show a type, like mine and most, that does unscrew, and perhaps all the way out is a possibility, that would be the definition of dumb luck.

The link OP posted,

perhaps he just thought they all looked/worked the same, so he just posted that one, it just happened to be the rare one that does not unscrew.

IF this goes on any longer, we will need a photo I think.

IF this goes on any longer, we will need a photo I think.

Krell K300i

The channel-lock pliers have set the binding posts free, hallelujah hallelujah! Thanks, guys!

@imhififan 

Yes, that is the amp exactly. 

@elliottbnewcombjr 

Yes, you're right, I posted that photo of the 0765 because I thought it looked close enough. The amp literature doesn't say whether that is the exact connector Krell uses. 

@imhififan 

Thank you, thank you, for posting that diagram. That was exactly the thing confounding me most. The cap had distinct parts and I wasn't sure where I should be applying pressure and so didn't want to apply too much pressure anywhere. Even with the diagram I still needed the pliers but at least I had more confidence about what I was doing. 

op - glad it worked out

usual a-gon ’make a mountain out of a moehill’ thread 😆🤣

@jjss49 

It does make me wonder what we ever did without the internet. 🙂

@jetter 

Now that I see how they operate, I'm impressed. It's actually quite clever and secure. 

@rfprice 

👍

rfprice OP

well, considering that they were 'frozen', it's a good thing you asked/solved it before throwing the Krell in the bin!!!!

happy listening.