Which is the optimal length of speaker wires?

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Sopper
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

New Linn Knekt or Deltron 550
Anyone compared those 2?
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Hermann
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Re: Which is the optimal length of speaker wires?

Post by Hermann »

I had it some time ago. Linn Axis or Digital with K400 in 2.48m length on Keilidh/Tukan with Naim 72/140. In fact, I couldn't hear any difference. However, this was before the Keilidh crossovers got new capacitors, which gave the speakers a significant boost. In the next few days I'll be making two K400s to Fredrik's specification again using Linn Knet and Deltrons. The test is then repeated.
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

We (Mitmu and I) tried copper plugs with screws and thus a cold crimp connection.
We slightly prefer it over Knekt and deltrons
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lejonklou
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Re: Which is the optimal length of speaker wires?

Post by lejonklou »

Sopper wrote: 2023-11-15 08:09 We (Mitmu and I) tried copper plugs with screws and thus a cold crimp connection.
We slightly prefer it over Knekt and deltrons
What kind of copper plugs, Sopper?

I have two different models (claimed to be made in 100% copper) in a drawer that I never tested. Perhaps I should?
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

lejonklou wrote: 2023-11-15 12:41
Sopper wrote: 2023-11-15 08:09 We (Mitmu and I) tried copper plugs with screws and thus a cold crimp connection.
We slightly prefer it over Knekt and deltrons
What kind of copper plugs, Sopper?

I have two different models (claimed to be made in 100% copper) in a drawer that I never tested. Perhaps I should?
I tried Monosaudio B80 plugs
Sourced from Aliexpress and claimed to be 100% copper
I can send you 8 plugs if you like to try it yourself
The crimping part is the most important; I use copper crimping ferrules that have a perfect fit and an expensive Knipex crimping pliers

At the moment a 3rd person with Lejonklou gear is testing these copper bananas K400 vs Knekts
When he reports his findings, I will update here
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Re: Which is the optimal length of speaker wires?

Post by Spannko »

Hermann wrote: 2023-11-15 08:05 I had it some time ago. Linn Axis or Digital with K400 in 2.48m length on Keilidh/Tukan with Naim 72/140. In fact, I couldn't hear any difference. However, this was before the Keilidh crossovers got new capacitors, which gave the speakers a significant boost. In the next few days I'll be making two K400s to Fredrik's specification again using Linn Knet and Deltrons. The test is then repeated.
What capacitors did you change to Herman?
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Re: Which is the optimal length of speaker wires?

Post by Hermann »

Only 4 capacitors were swapped for Dayton Audio. The tip came from an American forum, which is where the pictures are from.

The 14mF was replaced by two 7.5mF connected in parallel.
Keilidh 1.JPG
Keilidh 2.JPG
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Sopper
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

Sopper wrote: 2023-11-15 12:51
lejonklou wrote: 2023-11-15 12:41
Sopper wrote: 2023-11-15 08:09 We (Mitmu and I) tried copper plugs with screws and thus a cold crimp connection.
We slightly prefer it over Knekt and deltrons
What kind of copper plugs, Sopper?

I have two different models (claimed to be made in 100% copper) in a drawer that I never tested. Perhaps I should?
I tried Monosaudio B80 plugs
Sourced from Aliexpress and claimed to be 100% copper
I can send you 8 plugs if you like to try it yourself
The crimping part is the most important; I use copper crimping ferrules that have a perfect fit and an expensive Knipex crimping pliers

At the moment a 3rd person with Lejonklou gear is testing these copper bananas K400 vs Knekts
When he reports his findings, I will update here
Rudi, from Belgium, also reported that he likes the Copper banana plugs more then the Knekt
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lejonklou
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Re: Which is the optimal length of speaker wires?

Post by lejonklou »

Very interesting Sopper!

I had these two copper models in my drawer.

Top one is “Liton USA” and from the shiny and non-oxidised finish (after years in that drawer) I kind of suspect it isn’t pure copper.

Bottom one is Viborg Audio and they look exactly like the ones you’re using, apart from yours having two rings and this one a crisscross pattern on the barrel. It’s oxidised like a piece of copper that was once polished with some chemical and since haven’t been touched.

So you’re crimping together the strands of the cable with a copper ferrule, using an expensive Knipex tool? And then you screw that ferrule into the copper banana? Using a specific torque on the two screws, I assume.
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Sopper
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

lejonklou wrote: 2023-11-22 18:28 Very interesting Sopper!

I had these two copper models in my drawer.

Top one is “Liton USA” and from the shiny and non-oxidised finish (after years in that drawer) I kind of suspect it isn’t pure copper.

Bottom one is Viborg Audio and they look exactly like the ones you’re using, apart from yours having two rings and this one a crisscross pattern on the barrel. It’s oxidised like a piece of copper that was once polished with some chemical and since haven’t been touched.

So you’re crimping together the strands of the cable with a copper ferrule, using an expensive Knipex tool? And then you screw that ferrule into the copper banana? Using a specific torque on the two screws, I assume.
Exactly
Viborg and monosaudio are almost identical.
The most important part is exact size copper ferrule
When I visit Marco, (2-3 weeks) I’ll hand over some ferrules and plugs, he can send it to you. so you can try it yourself and compare with knekt
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Re: Which is the optimal length of speaker wires?

Post by Nature »

Sopper wrote: 2023-11-15 12:51The crimping part is the most important; I use copper crimping ferrules that have a perfect fit and an expensive Knipex crimping pliers
Any URL to this ferrules?
Which model of crimping tool du you use?
https://www.knipex.com/products/crimping-pliers
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

Nature wrote: 2023-11-28 09:09
Sopper wrote: 2023-11-15 12:51The crimping part is the most important; I use copper crimping ferrules that have a perfect fit and an expensive Knipex crimping pliers
Any URL to this ferrules?
Which model of crimping tool du you use?
https://www.knipex.com/products/crimping-pliers
Image
https://www.knipex.com/products/crimpin ... ess/975304

Ferrules are sourced locally:
https://borenco.nl/media/files/Haupa%20 ... 0blank.pdf
Haupa, copper, 18mm length, 4mm2
Last edited by Sopper on 2023-11-28 13:22, edited 1 time in total.
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Re: Which is the optimal length of speaker wires?

Post by lejonklou »

How are you fitting 2.5 mm2 ferrules on 4 mm2 copper?
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

lejonklou wrote: 2023-11-28 13:16 How are you fitting 2.5 mm2 ferrules on 4 mm2 copper?
Not 😅
I guess I use 4mm2, post adjusted
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Re: Which is the optimal length of speaker wires?

Post by lejonklou »

OK, so the ferrule article number is 270168?

And then the square ferrule is fitted into the round hole of the copper banana and screwed in place? That step seems a little imperfect.

What if one could combine the copper ferrule with the banana connector into one piece? Do you think that could be possible or is the ferrule too thin walled and fragile to be part of a connector?
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Re: Which is the optimal length of speaker wires?

Post by Sopper »

Too thin walled indeed
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