Philips Fidelio L1 - Page 2

the sensitivity data is measured with test tone, often these have very high gain level so with real music you won't reach near the same SPL with a given power input. Also, don't you think that most equipment that's not a portable player will output quite a bit more than 50mw even at low gain settings? I think these phones will likely distort quite noticeably when used with serious amps.

Quote:

Originally Posted by dw1narso 



You definitely don't know what you said...

Philips quote 50mW but with 105dB sensitivity

Listening with 1mW to 4mW (105db-111dB) in long term will make your hearing lost.
At 32mW, which translate to 120dB is the treshold of pain for most people.
 

I don't want to argue... so let's be constructive.
 

Quote:

Originally Posted by Amarphael 

 

the sensitivity data is measured with test tone, often these have very high gain level so with real music you won't reach near the same SPL with a given power input. Also, don't you think that most equipment that's not a portable player will output quite a bit more than 50mw even at low gain settings? I think these phones will likely distort quite noticeably when used with serious amps.

 

Let's say that the measurement is test tone at 1KHz. (or maybe three tones). Still.. if they quote "honestly" 105dB sensitivity at 1mW. That's quite loud already. Most musical material could be heard conveniently at 85dB - 95dB.

50mW max. which translated to 120dB gives us 35dB dynamic headroom (from 85dB), that should be sufficient.

Referring to my experience with high-sensitivity speaker, the more sensitive the driver the more dynamic music can be reproduce. This could be because the amplifier would be less strain and swing output with less distortion. The second reason could be the amp with class AB output stage could work mostly in class A region with less transition to the class B. Sure, not all high sensitivity driver sounds good. But the good ones really show the benefit of their sensitivity.

I assume, the headphone driver would be in similar situation.

The most important of this Fidelio L1 is the quality of sound it reproduce. And we don't know it until we hear it. It could be good, it could be suck.