Beyma 18QLEX1600Fe-4 (4 Ohm) standard measurements on LoudspeakerLab. 93.4 dB sensitivity. Fs 31 Hz. Qts 0.250. Evidence grade C (47.0/100).
Fs: 31 Hz; Qts: 0.250; Qes: 0.250; Qms: 11.600; Vas: 177.20 L; Sd: 1255.0 cm²; Re: 3.60 Ω; Le: 2.80 mH; Sensitivity: 93.4 dB; Nominal Z: 9.4 Ω; Measured range: 20-19370 Hz
On-axis flatness 49
Scored passband 47 Hz–1.4 kHz
Spec-sheet profiles
Vented ~61.7 L · Fb 54 Hz
LoudspeakerLab evidence grade: C (47.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.