GRS 6SMP-4 standard measurements on LoudspeakerLab. 89.3 dB sensitivity. Fs 46 Hz. Qts 0.386. Evidence grade C+ (56.8/100).
Fs: 46 Hz; Qts: 0.386; Qes: 0.449; Qms: 2.734; Vas: 14.96 L; Sd: 136.8 cm²; Re: 3.66 Ω; Le: 0.29 mH; Sensitivity: 89.3 dB; Nominal Z: 4.3 Ω; Measured range: 10-20000 Hz
On-axis flatness 58 · DI tracking 62 · DI smoothness 31
Scored passband 69 Hz–3.6 kHz
Spec-sheet profiles · Off-axis H/V response data available.
Vented ~11.1 L · Fb 53 Hz
LoudspeakerLab evidence grade: C+ (56.8/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.