SEAS U18RNX standard measurements on LoudspeakerLab. 88.0 dB sensitivity. Fs 43 Hz. Qts 0.370. Evidence grade C+ (57.0/100).
Fs: 43 Hz; Qts: 0.370; Qes: 0.450; Qms: 2.050; Vas: 22.00 L; Sd: 126.0 cm²; Re: 5.90 Ω; Le: 0.25 mH; Sensitivity: 88.0 dB; Nominal Z: 8.0 Ω; Measured range: 21-19807 Hz
On-axis flatness 65 · DI tracking 33 · DI smoothness 59
Scored passband 124 Hz–3.7 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~15.0 L · Fb 52 Hz
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.