Scan-Speak D2904/710003 standard measurements on LoudspeakerLab. 94.5 dB sensitivity. Fs 520 Hz. Qts 0.440. Evidence grade C+ (57.0/100).
Fs: 520 Hz; Qts: 0.440; Qes: 0.500; Qms: 3.500; Vas: 0.02 L; Sd: 7.0 cm²; Re: 3.00 Ω; Le: 0.01 mH; Sensitivity: 94.5 dB; Nominal Z: 4.0 Ω; Measured range: 223-20000 Hz
On-axis flatness 85 · DI tracking 20 · DI smoothness 32
Scored passband 1004 Hz–16.6 kHz
Spec-sheet profiles · Off-axis H/V response data available.
LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.