SB Acoustics SB21RDCN-C000 standard | Fs 850 Hz, 89.5 dB, Qts 1.280 | LoudspeakerLab

Thiele-Small parameters

Fs: 850 Hz; Qts: 1.280; Qes: 2.450; Qms: 2.710; Sd: 4.6 cm²; Re: 3.10 Ω; Le: 0.04 mH; Sensitivity: 89.5 dB; Nominal Z: 4.0 Ω; Measured range: 103-20000 Hz

Driver quality scores

On-axis flatness 80 · DI tracking 52 · DI smoothness 41

Usable passband

Scored passband 1617 Hz–20.0 kHz

Measurement coverage

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

Measurement profiles

• IEC baffle (spec_sheet)

Where to buy

• madisound — $55.20 USD
• solen — $72.53 CAD
• soundimports — $43.35 EUR

Measurement quality

LoudspeakerLab evidence grade: C+ (56.2/100). Based on measurement provenance, off-axis data, distortion, and T/S completeness.

Also known as

SB21RDCN-C000-4

Manufacturer

• SB Acoustics