Dayton Audio PC105-4 standard measurements on LoudspeakerLab. 89.8 dB sensitivity. Fs 81 Hz. Qts 0.512. Evidence grade C+ (56.8/100).
Fs: 81 Hz; Qts: 0.512; Qes: 0.670; Qms: 2.172; Vas: 3.58 L; Sd: 52.8 cm²; Re: 3.32 Ω; Le: 0.32 mH; Sensitivity: 89.8 dB; Nominal Z: 3.6 Ω; Measured range: 20-20000 Hz
On-axis flatness 73 · DI tracking 57 · DI smoothness 36
Scored passband 124 Hz–6.9 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~5.0 L · Fb 72 Hz
LoudspeakerLab evidence grade: C+ (56.8/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.