StanD
Headphoneus Supremus
- Joined
- Oct 2, 2013
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The HD 600 sounds great out of the box but the driver does need some time to break in. After break-in finishes the primary driver resonance (around 100 Hz) should shift slightly lower in frequency (I remember seeing an impedance graph comparison, it was -10 Hz at the most) so the bass will extend a little lower. Having used the HD 600 for 3 months now, the bass certainly sounds deeper to me. It's certainly deeper than I expected. I'm using a low shelf filter but I have it cut off at 65 Hz. Based on frequency response measurements I thought the cutoff would have to be 100 Hz, or at least 80.
i don't buy into this. If a resonance shifts from 100 Hz to 90 Hz, that does not mean the bottom end will extend any further than it started at. It is unlikely that such a small shift in freq will be detectable as it is not an active pitch that we would be able to perceive. Under what conditions and who did such a test for a resonance shift?