Dayton Audio SIG150-4 standard measurements on LoudspeakerLab. 90.7 dB sensitivity. Fs 63 Hz. Qts 0.467. Evidence grade C+ (57.0/100).
Fs: 63 Hz; Qts: 0.467; Qes: 0.507; Qms: 5.812; Vas: 7.73 L; Sd: 96.8 cm²; Re: 3.68 Ω; Le: 0.36 mH; Sensitivity: 90.7 dB; Nominal Z: 4.0 Ω; Measured range: 20-20000 Hz
On-axis flatness 59 · DI tracking 63 · DI smoothness 39
Scored passband 95 Hz–3.7 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~8.7 L · Fb 61 Hz
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.