GRS K-33-4 standard | Fs 32 Hz, 97.0 dB, Qts 0.520 | LoudspeakerLab

Thiele-Small parameters

Fs: 32 Hz; Qts: 0.520; Qes: 0.546; Qms: 12.610; Vas: 274.11 L; Sd: 855.3 cm²; Re: 3.52 Ω; Le: 1.13 mH; Sensitivity: 97.0 dB; Nominal Z: 3.8 Ω; Measured range: 15-20000 Hz

Driver quality scores

On-axis flatness 57 · DI tracking 60 · DI smoothness 82

Usable passband

Scored passband 48 Hz–1.7 kHz

Measurement coverage

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

Recommended enclosure

Vented ~395.0 L · Fb 28 Hz

Measurement profiles

• uploaded measurement (measured)
• spec sheet (spec_sheet)

Where to buy

• parts_express — $112.99 USD
• soundimports — $123.93 EUR

Measurement quality

LoudspeakerLab evidence grade: B+ (79.8/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.