Scan-Speak 21WE/4542T00 standard measurements on LoudspeakerLab. 93.5 dB sensitivity. Fs 38 Hz. Qts 0.280. Evidence grade C+ (57.0/100).
Fs: 38 Hz; Qts: 0.280; Qes: 0.300; Qms: 5.430; Vas: 54.00 L; Sd: 233.0 cm²; Re: 3.40 Ω; Le: 0.10 mH; Sensitivity: 93.5 dB; Nominal Z: 4.0 Ω; Measured range: 22-8305 Hz
On-axis flatness 56 · DI tracking 36 · DI smoothness 39
Scored passband 66 Hz–5.8 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~22.2 L · Fb 59 Hz
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.