SEAS X1-04 standard measurements on LoudspeakerLab. 96.0 dB sensitivity. Fs 31 Hz. Qts 0.390. Evidence grade C+ (57.0/100).
Fs: 31 Hz; Qts: 0.390; Qes: 0.430; Qms: 4.240; Vas: 146.00 L; Sd: 222.0 cm²; Re: 3.00 Ω; Le: 0.05 mH; Sensitivity: 96.0 dB; Nominal Z: 4.0 Ω; Measured range: 19-9963 Hz
On-axis flatness 54 · DI tracking 33 · DI smoothness 61
Scored passband 188 Hz–1.7 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~110.9 L · Fb 35 Hz
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.