I think that M380 owners are patient people, this is not a fast transient microphone...The real question is the price, I had seen 80' DT880 sold for 80 to 100$....It's a nice price for two spare capsules

In honor of the 1 year anniversary of the last post on this topic...Awhile back, I took a driver out of a pair of Beyer DT770 (250 ohm version) headphones and mounted into an old Sennheiser MD403 shell. Sounds berry berry close to both of my M380's. Close enough that I can use it any time I would use a 380 without worrying about killing it. I too like that it doesn't need a preamp--it's happy going straight into my Digi line inputs.

do we know what the part # is for the DT-700 250 ohm capsules?also do we know anything about the transformer in the 380? does it even have one?

There is no transformer per say in a Beyer 380, but a humbucking coil is wired in series with the dynamic capsule. See http://www.coutant.org/beyerpdf/m380.pdf for a schematic.Cheers

Check out the scaling of that graph. It looks flat until you see it's 4dB per division.

audioboffin wrote:There is no transformer per say in a Beyer 380, but a humbucking coil is wired in series with the dynamic "capsule". See http://www.coutant.org/beyerpdf/m380.pdf for a schematic.Good point. You can probably afford to skip this though; I've done it with M88s before when they have gone faulty.It does suggest however that the capsule may not be exactly the same, unless the housing for the headphones transducer has an area where a hum-buck coil can be locally mounted.If someone wants to see if these transducers are the same, just measure the impedance of them at varying frequencies, outwith* their housings.*Hey, I used a Scots word.

I did not bother with a humbucking coil, and saw no need for a transformer, as neither of my M380's have transformers. I've had no problem with hum--but I only use it in my home studio, not for gigging. That can be a noisey electrical environment. After all these months since my last post, it has remained reliable and sounds indistiguishable, (to my amateur ears), from my two M380's.BTW, I don't know how much influence this thread has had, or if it's just the economy, but it seems the prices of M380's have fallen on ebay over the past several months. I'd like to get a read on how many others have tried this successfully.All the best,Mark

Source for internal foam?mine just started crumbling away.

Shit!Just called Beyer... spoke with Pete at extension 12. He has them for $1.18 each (two per mic). Part#: 310.573I should have it before the week is up and I will post whether it's a good fit or not.If you need new foam for your TG-X50 or M380 this might be the ticket.

I have seen a m380 in bronze on German or UK ebay yesterday. Price was quite high, but the thing looked fine. Bought mine about 3 years ago, so I am currently not looking for a second one...