Yeah I saw that one and even though those materials are sure to be more expensive than neodymium N52/N55 for the same size, I wonder if other gains could be had.
I've seen some dumb posts on HF about this. I'd rather just swap the whole magnet for one of the same size, just stronger. Might not matter. Just a curiosity thing, magnets aren't too expensive.
I'm currently in the process of doing this, but not with an N55. I tried looking for an N55, but I couldn't find one with a diameter of .875, which is the closest size to the original magnet that's available. I must give a word of caution though. When I pulled the original magnet out, it ripped part of the red ring from inside of the driver. So this might not even work or give very poor results.
I have no clue how they were able to remove the magnet and put a new one in without ripping the magnetic ring off. The part I'm worried about is drilling the hole in the magnet to allow it to vent. Neo-magnets are extremely brittle and require diamond drill bits. Too much heat and they'll shatter. So, it might not be worth the headache.
@MLegend I've never tried this myself, but based on a quick search, it seems that the magnet easily falls out when you take off the spider cage? Was that not the case for you?
Excellent idea! May I add, using ARMCO or Permendur would be a nice experiment too, I always was curious about the "tone" of the magnets, apart from the "+1 million teslas" stuff. Jonathan Carr (Lyra cartridges) swears by Platinum-Iron (used by Koetsu) and Armco (he calls it "chemically purified iron" ), it would be awesome to have a driver magnet made of that stuff.
Jonathan Carr also added that one of the advantages of rare earth magnets (Neodymium, Permendur) was the possibility to design a magnetic circuit without a pole piece (talking about cartridges), and that it was a huge advantange in lowering distortion, at the cost of reduced efficiency.
@tommytakis Definitely not. I tried to pull the magnet out with just my fingers and it wouldn't budge. I then used a flat head, pulling it out slowly one side at a time by wedging the flathead in the vent hole. The red ring attached to the driver is magnetic, so when you pull on that magnet it also pulls the ring and the driver.
Weird! When I modded my 6xx that magnet just wanted to slip right out when I turned the headphone around, I had to use dynamat as 'glue' to hold it down. Thankfully I've got some drivers I don't mind breaking once I've settled on a magnet. I just hope there aren't massive minimum order quantities...
It's probably going to depend on where you order them from. I was able to order a single magnet from magnetshop, but the more you order the cheaper it's going to be per magnet.
Just to report some information for possible future modders, .875 magnet is a little too large for the 6xx driver capsule. The next size down, .750, will probably be an exact fit.
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