How’s that for a speaker crossover

[andyrlb]

Well I’ve never seen such big caps on a speaker crossover…
Ansar supersound and Rata supersound ( russ Andrews )

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[Pepperamip]

I recently did the crossovers on my crusaders and I was amazed at the size of some of them. I replaced exiting ones with clarity caps and cement resistors with mills wire wounds. Real noticeable improvement.

Did you do this yourself? I was given advise to place some of the coils on their side but never got round to doing it.

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[Wakefield Turntables]

Why do you need to replace the inductor coild on there side? What benefits does this reap?

[Lawrence001]

Think I read something similar recently (but can't remember the exact details wrt placement, direction etc) might have been related to the induced magnetic field being in the same plane as (or was it perpendicular to, thinking of that 3 finger EMF thing) the PCB traces.

[walpurgis]

I think the idea is to orientate adjacent inductors at 90 degrees to each other where possible. I've not seen any studies showing if there really are benefits and I'm far too lazy to look for any! :)

[Pharos]

Just try to avoid making a transformer with them.

[Barry]

Just try to avoid making a transformer with them.

Agreed - the idea is to minimise any flux linkage between adjacent inductor coils.

[andyrlb]

No I didn’t make them , they were in the Atkinson Sota speakers.

[Lawrence001]

I think the idea is to orientate adjacent inductors at 90 degrees to each other where possible. I've not seen any studies showing if there really are benefits and I'm far too lazy to look for any! :)Ah yes that was it, I literally read that for the first time the other day, maybe it was on here.

[Wakefield Turntables]

OK, makes sense. Anyone ever tried it and heard a difference?

[Barry]

It is done for exactly the same reason the mains transformer and output transformer of a typical valve amplifer have their respective laminations arranged mutually at right angles. Depending on the skill of the transformer design, especially that of the laminated core, the flux leakage will be small. But the inductors used in loudspeaker crossover networks are often 'air cored', so the flux is poorly contained and thus, unless the coils are arranged at right angles to one another, can cross-couple.

Inductors that use ferrite cores are better in this respect, but are disliked by some.

[Macca]

Given that the inductors in crossovers are usually quite small they would have to sit very close together for any interaction to happen.

I don't recall ever seeing a crossover where this might be a factor not even very cheap speakers. probably because it's a known potential issue and costs nothing to avoid.

[walpurgis]

Is 90 degrees to adjacent inductors the optimum orientation angle?

[Pharos]

There are many different ways to arrange the 90 degrees.

[karma1967]

this gives you a good idea.

https://i.imgur.com/D5zMkxU.png