Beyma 12BR70 (8 Ohm) standard measurements on LoudspeakerLab. 94.5 dB sensitivity. Fs 31 Hz. Qts 0.500. Evidence grade C (47.0/100).
Fs: 31 Hz; Qts: 0.500; Qes: 0.560; Qms: 4.440; Vas: 142.00 L; Sd: 540.0 cm²; Re: 5.60 Ω; Le: 0.80 mH; Sensitivity: 94.5 dB; Nominal Z: 6.8 Ω; Measured range: 20-19626 Hz
On-axis flatness 55
Scored passband 52 Hz–2.3 kHz
Spec-sheet profiles
Vented ~189.3 L · Fb 28 Hz
LoudspeakerLab evidence grade: C (47.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.