Purifi PTT4.0M04-NFC-01 standard | Fs 46 Hz, 88.0 dB, Qts 0.250 | LoudspeakerLab

Purifi PTT4.0M04-NFC-01 standard measurements on LoudspeakerLab. 88.0 dB sensitivity. Fs 46 Hz. Qts 0.250. Evidence grade B (63.0/100).

Preview

Thiele-Small parameters

Fs: 46 Hz; Qts: 0.250; Qes: 0.270; Qms: 4.600; Vas: 5.40 L; Sd: 56.7 cm²; Re: 3.40 Ω; Le: 0.26 mH; Sensitivity: 88.0 dB; Nominal Z: 3.3 Ω; Measured range: 21-18625 Hz

Driver quality scores

On-axis flatness 58 · DI tracking 65 · DI smoothness 71 · THD 95 · Composite 70

Usable passband

Scored passband 97 Hz–4.3 kHz

Measurement coverage

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

Recommended enclosure

Vented ~1.9 L · Fb 80 Hz

Measurement profiles

Where to buy

Measurement quality

LoudspeakerLab evidence grade: B (63.0/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.

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