What we know about the measurement:
JBL 4309 is a passive bookshelves speaker that cost around 2000USD for a pair .
- Quality of the measurement data is high .
- Origin of the data is ASR.
- Format of the data is generated by a Klippel NFS .
- Sensitivity: 85.4dB (avg. 100Hz-1kHz for 2.83V measured at 1m)
- -3dB (resp. -6db) point v.s. reference is at 60.1Hz (resp. 43.9Hz).
- Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
- Frequency deviation is 4.0dB over the same frequency range.
- Directivity
- Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Vertical directivity is (-20.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Tonality (Preference) Score
- Tonality (Preference) Score is 3.6
and would be 5.61 with a
perfect subwoofer.
- Details: NBD: ON 0.661, LW 0.583, SP 0.659, PIR 0.601; SM: SP0.773, PIR0.594; LFQ 0.945, LFX 42Hz
- Tonality (Preference) Score is 5.27
with an EQ and would be 7.08 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.597, LW 0.491, SP 0.482, PIR 0.401; SM: SP0.931, PIR0.898; LFQ 0.945, LFX 38Hz
- Tonality (Preference) Score is 3.6
and would be 5.61 with a
perfect subwoofer.
- Link to Original review.
