nigeljames
Headphoneus Supremus
- Joined
- Feb 19, 2007
- Posts
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- 56
My Master-6 with 1 ohm output impedance drives the HD800's exceedingly well
So far, HE400 and HE400i has been really good without any ringing noise with Vali. But, some 60~70 Ohms dynamic coil headphones were rinigng... I guess orthos' impedance is really different from conventional coiled drivers' impedance..
the planar conductor does have low inductance - but there is still mass-spring resonance in any driver which is reflected to the electrical terminals by the electro-acoustic properties of the "motor" and mass and suspension of moving parts
for electrodynamics there should still be the mass-spring resonance of the diaphragm but it isn't as easily visible at the electrical terminals in part because of the poor efficiency of most Orthos as electric "motors"
and the diaphragm's resonant peak can also well damped in the mechanical-acoustic domain by the magnet structure and intentional added flow/acoustic resistive damping material
Very interesting discussion. Surprised that there isn't more known officially about the effect of output impedance on planar/orthodynamic headphones.
From a purely subjective point of view, I have a Asus Xonar STU amp which has an output impedance of 10 ohms and a Hifiman 400s which has an impedance of 22 ohms. On paper (according to experience with dynamic headphones) this combination should sound awful! But the sound I'm getting is very good indeed - very well balanced, extended but refined upper frequencies and open, natural midband and deep, solid bass.
Perhaps more user opinions might help bring about more serious, official attention to this issue? Anyone?
Very interesting discussion. Surprised that there isn't more known officially about the effect of output impedance on planar/orthodynamic headphones.
From a purely subjective point of view, I have a Asus Xonar STU amp which has an output impedance of 10 ohms and a Hifiman 400s which has an impedance of 22 ohms. On paper (according to experience with dynamic headphones) this combination should sound awful! But the sound I'm getting is very good indeed - very well balanced, extended but refined upper frequencies and open, natural midband and deep, solid bass.
Perhaps more user opinions might help bring about more serious, official attention to this issue? Anyone?