What we know about the measurement:
Part Express DIY Copperhead is a passive bookshelves speaker that cost around 100USD for a pair .
- Quality of the measurement data is high .
- Origin of the data is ErinsAudioCorner .
- Format of the data is generated by a Klippel NFS .
- Sensitivity: 76.6dB (avg. 100Hz-1kHz for 2.83V measured at 1m)
- -3dB (resp. -6db) point v.s. reference is at 98.1Hz (resp. 82.0Hz).
- Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
- Frequency deviation is 4.4dB over the same frequency range.
- Directivity
- Horizontal directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Vertical directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Tonality (Preference) Score
- Tonality (Preference) Score is 2.4
and would be 5.6 with a
perfect subwoofer.
- Details: NBD: ON 0.64, LW 0.59, SP 0.59, PIR 0.58; SM: SP0.74, PIR0.51; LFQ 0.52, LFX 79Hz
- Tonality (Preference) Score is 4.1
with an EQ and would be 7.0 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.47, LW 0.44, SP 0.54, PIR 0.47; SM: SP0.88, PIR0.83; LFQ 0.49, LFX 68Hz
- Tonality (Preference) Score is 2.4
and would be 5.6 with a
perfect subwoofer.
- Link to Original review.
