Scan-Speak R3004/662000 standard measurements on LoudspeakerLab. 90.5 dB sensitivity. Fs 520 Hz. Qts 0.480. Evidence grade C+ (57.0/100).
Fs: 520 Hz; Qts: 0.480; Qes: 0.560; Qms: 3.270; Vas: 0.01 L; Sd: 5.6 cm²; Re: 3.00 Ω; Le: 0.03 mH; Sensitivity: 90.5 dB; Nominal Z: 4.0 Ω; Measured range: 223-20000 Hz
On-axis flatness 86 · DI tracking 47 · DI smoothness 34
Scored passband 1004 Hz–14.1 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.