Author Topic: Ferro fluid  (Read 387 times)

Offline kenneths

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Ferro fluid
« on: January 06, 2017, 10:51:25 AM »
I am looking for Ferro fluid for a B&W CDM1 tweeter

Offline thenoizeguy

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Re: Ferro fluid
« Reply #1 on: January 07, 2017, 01:21:32 PM »
Look up " Merle's speaker repairs ". She might have.
Another option that I thought of was Castrol Magnatec.
Has anyone thought of trying or have tried it ?
You basically need oil with magnetic properties so it stays where you put it.

Expensive cables come in fancy silk lined wooden boxes to make you feel better about spending a fortune on them.

Offline blizzard

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Re: Ferro fluid
« Reply #2 on: January 08, 2017, 10:44:36 AM »
Castrol magnatec will not work.

It contains no ferrite which is exactly what's needed to draw away the heat from the voice coils.

There is a mix available using magnetic ink developer powder and combined with 50% mix of parrafin and oleic acid.

Personally I would source the real Mc Coy as it is a critical component in speaker design.

Btw I'm confused as why you would need ferro fluid? If it's a tweeter membrane replacement don't worry as the ferro fluid left in the voice coil gap is more than enough. You need no more than one drop (two at max) in the voice coil gap
« Last Edit: January 08, 2017, 10:48:32 AM by blizzard »

Offline thenoizeguy

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Re: Ferro fluid
« Reply #3 on: January 08, 2017, 11:39:31 PM »
Google seems to have quite a few topics on making your own Ferrofluid.
Expensive cables come in fancy silk lined wooden boxes to make you feel better about spending a fortune on them.