SB Acoustics SB12NRXF25-8 standard measurements on LoudspeakerLab. 85.0 dB sensitivity. Fs 63 Hz. Qts 0.420. Evidence grade C+ (57.0/100).
Fs: 63 Hz; Qts: 0.420; Qes: 0.460; Qms: 5.400; Vas: 4.20 L; Sd: 50.0 cm²; Re: 6.40 Ω; Le: 0.34 mH; Sensitivity: 85.0 dB; Nominal Z: 8.0 Ω; Measured range: 21-19134 Hz
On-axis flatness 51 · DI tracking 27 · DI smoothness 31
Scored passband 95 Hz–6.5 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~3.7 L · Fb 67 Hz
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.