Anyone ever built a Duel driver headphone, in a back to back configuration.
Thinking one in normal position and a smaller second inside facing opposite direction.
The front driver mount would probably be vented within a semi open design.
Or am I crazy .
Just wondering if it's been done in a commercial headphone but it never took off.
That's some pair of headphones, interesting write up about them too.
Shame there is no internal photos of the porting etc.
Might just have a bash at it.
The first coax I heard that was good was a Sonab speaker from the mid 70's. After I heard my first ribbon a few years later I thought that could work for car speakers and other small space speakers which is certainly what headphones are.
After owning a raft of ortho dynamic speakers and headphones, and the same for stats (just one can), but only speaker ribbons - I'd conclude that ribbons are the best drivers for 5k and over, and orthos for 500 Hz and under. Stats are the best in the middle.
A few years ago I heard a stack of Bohlender Neo 10's with Raal ribbons on top x'd over to a push/pull woofers. They were very good. Earlier, I heard a pair of ML SL-3's with a pair of Sequerra tweeters (taken from dead DQ-10's), didn't quite gel but impressive in many ways.
Ribbons would seem (electrically) easier to deal with than stats. The overall issue of course is weight. I would think that a ribbon in a headphone could be quite small, in particular if it was crossed fairly high.
On the diyAudio site there was a lively discussion about ribbons and a specific headphone design, it died out about 8 months ago so I don't know anymore on that.
Looking at the crosszones it appears the second internal driver is used to produce sound from the opposite channel to simulate listening to a speaker system.
Ie. Both ears been able to hear left and right channels
If this is the only reason for Internal drivers then I think I'll give it s miss,
Clever but complicated
If more the better was true than wouldn't we have lots of high-end multi-driver full-sized headphones? It doesn't seem to be the case. Perhaps somebody has a detailed explanation as to why multi-driver is difficult to implement well?
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