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Why 5+ drivers? Makes no sense to me. - Page 2

post #16 of 23
Quote:
Originally Posted by Spyro View Post
 

I don't understand how anyone could claim a single driver BA could possibly sound better than a multi-driver BA.  I suppose a person with golden ears might hear more cohesiveness with one driver but that seems kind of a moot point if all the frequencies aren't thoroughly represented.

 

Perhaps... although the Ortofon e-Q5, which was single driver, was rather well-liked. I guess it wasn't a traditional BA driver though, so I don't know if you'd count that. :)" On the other hand, we should keep in mind that jphonic K2 SP, with only 2 BA, arguably outperforms many other 3 driver and 4 BA driver headphones. But you were only talking about single vs multi; it was just a little side note.

 

Quote:
Originally Posted by proton007 View Post
 

 

Ah. Yes, that makes sense.

 

In IEMs it seems 2 dynamic drivers can do the work of 3 BA drivers.

 

I'm not an expert at this, but I think most agree that BA tends to do a better job with accuracy and timing simply because dynamic moves more air and hence often has a slower response. Manufacturers thus tend to lean more towards multi-BA than less multiple dynamic... that being said, however, Unique Melody's triple dynamic 3DD seems to have gotten an incredibly positive response here on HeadFi (and even from RinChoi). I agree that I'm kind of skeptical of models such as the 8 driver JH16, 10 driver Kaiser 10 (or haha 20 driver Sleek Audio CT20), but not having tried them myself, I'm willing to trust the positive comments other members have said. Maybe it's just a something of a placebo effect, but hey, if it works, it works. ;)

post #17 of 23
multi dynamic has been done since before I was born and has never ever been close to single dyna performances in headphones.
for me BA is exactly the same except that 1 dyna doesn't cover the entire range of frequencies on its own. so to my eyes, the industry is replacing one defect(frequency range) by another (crossover) because a bad crossover is much less obvious to the general public than a lack of treble or sub bass.

my living exemple is the 4ai. can't say if they're all like the one I've heard, but it went all david copperfield on some mid frequencies. it was so weird I really can't imagine living with this kind of IEM. but then you go on the dedicated post here about those iems and you see legions of fans. so in the end it's really about what matters for the customer more than high fidelity.
post #18 of 23

Interesting... I've been reading some fairly negative things regarding 4.ai and perhaps Heir in general recently... anyhow, sorry to get off topic. 

post #19 of 23

Sort of like gear ratios of a car.  Having 4 gears to work really well within certain ranges will be better than one gear trying to handle all speeds from 0-80 mph.  I have yet to hear a single BA driver that represents all frequencies as well as a multi.

post #20 of 23
Quote:
Originally Posted by LambFollower View Post

 

I'm not an expert at this, but I think most agree that BA tends to do a better job with accuracy and timing simply because dynamic moves more air and hence often has a slower response. Manufacturers thus tend to lean more towards multi-BA than less multiple dynamic... that being said, however, Unique Melody's triple dynamic 3DD seems to have gotten an incredibly positive response here on HeadFi (and even from RinChoi). I agree that I'm kind of skeptical of models such as the 8 driver JH16, 10 driver Kaiser 10 (or haha 20 driver Sleek Audio CT20), but not having tried them myself, I'm willing to trust the positive comments other members have said. Maybe it's just a something of a placebo effect, but hey, if it works, it works. ;)

 

The reason for using BAs is because they're small, have high sensitivity and less power hungry. Multi-dynamic IEMs come with a design quirk (either low impedance or low sensitivity).

Size and power requirements just make BAs an easier design choice if you wish to have multiple drivers in the first place.

 

The right question to ask, then, is that is a single BA driver enough, or it needs a minimum of two to cover the entire spectrum? My understanding is the latter.

post #21 of 23
Quote:
Originally Posted by castleofargh View Post

multi dynamic has been done since before I was born and has never ever been close to single dyna performances in headphones.
for me BA is exactly the same except that 1 dyna doesn't cover the entire range of frequencies on its own. so to my eyes, the industry is replacing one defect(frequency range) by another (crossover) because a bad crossover is much less obvious to the general public than a lack of treble or sub bass.

my living exemple is the 4ai. can't say if they're all like the one I've heard, but it went all david copperfield on some mid frequencies. it was so weird I really can't imagine living with this kind of IEM. but then you go on the dedicated post here about those iems and you see legions of fans. so in the end it's really about what matters for the customer more than high fidelity.

 

I use a 2-way BA (Shure SE425) and a dual-dynamic (TDK-IE800).

 

The TDK is definitely bigger, and the earpiece is longer to accommodate the two drivers. In terms of sound, the TDK covers lows to highs with ease, and rivals the clarity of the Shures. Better separation too. But they're 10 Ohms in impedance (the Shure measures 22 Ohms) and will consume the battery twice as fast.

The Shures are mid-centric, and pretty good at that.


Edited by proton007 - 12/18/13 at 9:41pm
post #22 of 23

I did ask Jerry Harvey on the weekend and while I don't remember everything he said, it basically comes down to the same reasons full-size speakers use multiple drivers. You get +3dB of headroom for each extra driver and they can be set up to get a flatter phase response across the entire range. He also said in effect that getting good treble response especially above 10 kHz to deliver the highest instrument frequencies was very challenging.

 

I was going to video him talking about it but I forgot. Next time I will if anyone is interested.

post #23 of 23

thanks. I also noticed that multi BA weren't the way to get extended trebles, but I don't understand the mechanical reason behind it.

as 1 BA like the er4 can do a pretty good job on the trebles, I suspect there is some kind of interference.

 

 

 

 

and yes, I am always interested in the "how" of things. ALWAYS!!!!! ^_^

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