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Why the Hate for Spades?
Why the Hate for Spades?
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Old 11th October 2017, 07:47 PM   #11
dimkasta is offline dimkasta  Greece
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I dislike any kind of convenience connectors in my final assemblies. Meaning the ones I use for actually listening to music.
Call me audiofool or whatever, but I can hear the difference with and without them.
This includes interconnects, source switches, and the like. I would even remove the volume control if I lived in an isolated residence

Having a testbed assembly is a different discussion. There I usually prefer double screw connectors on cables

I believe spade connectors are only mandatory on mains connections.

As for lifting pads, designing them reinforced is always a good idea

Here is a closeup of the part footprints that I am using

Why the Hate for Spades?-capture-png
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Last edited by dimkasta; 11th October 2017 at 07:52 PM.
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Old 11th October 2017, 07:48 PM   #12
JeffYoung is offline JeffYoung  Ireland
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Why the Hate for Spades?
Quote:
Originally Posted by scottjoplin View Post
I like them so long as the locking receptacle isn't used. They have a large contact area.
Actually a spade connector only has a gas-tight joint along the edges of the rolled-in sides of the female connector. All the other bits of it will oxidise and become high-resistance.
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Old 11th October 2017, 07:49 PM   #13
xrk971 is online now xrk971  United States
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Why the Hate for Spades?
Quote:
I dislike any kind of convenience connectors in my final assemblies
Maybe that is the problem: I don't consider any amp I build, my final amp.
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Old 11th October 2017, 07:51 PM   #14
xrk971 is online now xrk971  United States
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Why the Hate for Spades?
Quote:
Originally Posted by JeffYoung View Post
Actually a spade connector only has a gas-tight joint along the edges of the rolled-in sides of the female connector. All the other bits of it will oxidise and become high-resistance.
The flat in the middle makes a pretty tight (maybe not gas tight) connection too - this is where the locking bump/tab is. But when I look at the flats on my spade after pulling them out, the flat is shiny from mechanical wear during insertion/removal process.
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Old 11th October 2017, 07:54 PM   #15
scottjoplin is offline scottjoplin  Wales
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Quote:
Originally Posted by JeffYoung View Post
Actually a spade connector only has a gas-tight joint along the edges of the rolled-in sides of the female connector.
Yep, as I said, large contact area and under sprung tension too, better than any screw terminal
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Old 11th October 2017, 07:59 PM   #16
JeffYoung is offline JeffYoung  Ireland
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Why the Hate for Spades?
I think you'll find that the flat in the middle does not stay shiny after insertion and before removal.

That being said, I do agree with Scott that a sprung connection is better than any screw terminal.

Speaking of which, I use wave washers under my transistor mounting bolts. However, I suspect that at these small dimensions they don't really have any effect. Anyone else?
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Old 11th October 2017, 08:00 PM   #17
radtech is offline radtech  United States
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I service one type of equipment that uses faston type terminals for several things. I've replaced lots of them for loosening up or becoming oxidized and overheating. They have their uses, but not reliable long term.
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Old 11th October 2017, 08:02 PM   #18
scottjoplin is offline scottjoplin  Wales
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Quote:
Originally Posted by JeffYoung View Post
I use wave washers under my transistor mounting bolts.
I use these Belleville washer - Wikipedia
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Old 11th October 2017, 08:10 PM   #19
WalterW is offline WalterW  Netherlands
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Why the Hate for Spades?
I have used spades in my latest VFET-X build also, but always in mind to solder them together, after the amp is totally finished.
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Old 11th October 2017, 08:45 PM   #20
Soundhappy is offline Soundhappy  France
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Why the Hate for Spades?
Aluminium materials in your pre or amplifier audio path ?
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