SB Acoustics SB12NRX25-4 standard | Fs 55 Hz, 87.5 dB, Qts 0.400 | LoudspeakerLab

SB Acoustics SB12NRX25-4 standard measurements on LoudspeakerLab. 87.5 dB sensitivity. Fs 55 Hz. Qts 0.400. Evidence grade C+ (57.0/100).

Preview

Thiele-Small parameters

Fs: 55 Hz; Qts: 0.400; Qes: 0.460; Qms: 3.200; Vas: 5.60 L; Sd: 50.0 cm²; Re: 3.10 Ω; Le: 0.14 mH; Sensitivity: 87.5 dB; Nominal Z: 4.0 Ω; Measured range: 21-18212 Hz

Driver quality scores

On-axis flatness 68 · DI tracking 80 · DI smoothness 43

Usable passband

Scored passband 78 Hz–1.5 kHz

Measurement coverage

Spec-sheet profiles · Off-axis H/V response data available.

Recommended enclosure

Vented ~4.5 L · Fb 61 Hz

Measurement profiles

Where to buy

Measurement quality

LoudspeakerLab evidence grade: C+ (57.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.

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