SB Acoustics SB12MNRX25-4 standard | Fs 58 Hz, 88.5 dB, Qts 0.370 | LoudspeakerLab

Thiele-Small parameters

Fs: 58 Hz; Qts: 0.370; Qes: 0.420; Qms: 3.600; Vas: 5.50 L; Sd: 50.0 cm²; Re: 3.20 Ω; Le: 0.14 mH; Sensitivity: 88.5 dB; Nominal Z: 4.0 Ω; Measured range: 202-18188 Hz

Driver quality scores

On-axis flatness 70 · DI tracking 9 · DI smoothness 35

Usable passband

Scored passband 87 Hz–5.9 kHz

Measurement coverage

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

Recommended enclosure

Vented ~3.7 L · Fb 69 Hz

Measurement profiles

• IEC baffle (spec_sheet)

Public designs

2 public loudspeaker designs on LoudspeakerLab use this driver.

• 3 Way Test
• Remix of 3 Way Test with a 10

Where to buy

• audiohobby — $44.00 EUR
• blackdotaudio — $277.98 PLN
• rumoh — $64.37 EUR
• soundimports — $51.61 EUR

Measurement quality

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

Manufacturer

• SB Acoustics