HD 650 Reference
For the Sennheiser HD 650 · Reference · AutoEq via OPRA
Neutral
Response curve10 bands · ±9 dB
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Bands
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Measurement-derived reference tuning for the Sennheiser HD 650. Profile by AutoEQ, measured by oratory1990, and distributed through OPRA under CC BY-SA 4.0.
AutoEq via OPRA
Reference source- Profile
- AutoEQ
- Measured by
- oratory1990
- Target
- AutoEq default over-ear target
Converted to Spectra filter names; frequency, gain, and Q values are unchanged. The source preamp is replaced by Spectra automatic headroom after response verification.
Parametric bands10 active
| Type | Freq | Gain | Q |
|---|---|---|---|
| Low Shelf | 105 Hz | +6.4 | — |
| Peak | 8.8 kHz | +5.1 | 1.42 |
| Peak | 118 Hz | -3.1 | 0.50 |
| Peak | 37 Hz | +0.7 | 3.96 |
| Peak | 3.2 kHz | -1.7 | 3.89 |
| High Shelf | 10 kHz | -2.1 | — |
| Peak | 1.2 kHz | -1.2 | 2.53 |
| Peak | 2.1 kHz | +1.2 | 3.23 |
| Peak | 587 Hz | +0.4 | 1.19 |
| Peak | 5.3 kHz | -1.1 | 5.75 |
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