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 3.7
and would be 5.7 with a
perfect subwoofer.
- Details: NBD: ON 0.66, LW 0.58, SP 0.66, PIR 0.61; SM: SP0.77, PIR0.64; LFQ 1.0, LFX 41Hz
- Tonality (Preference) Score is 5.6
with an EQ and would be 7.3 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.52, LW 0.43, SP 0.44, PIR 0.37; SM: SP0.92, PIR0.89; LFQ 0.99, LFX 36Hz
- Tonality (Preference) Score is 3.7
and would be 5.7 with a
perfect subwoofer.
- Link to Original review.
