Scan-Speak 21W/8555-00 'Classic' (discontinued)

Woofer with hard carbon-paper cone, SD-1 motor and low loss suspension.

Speaker features a very low resonance frequency due to 42mm voice coil and low damping SBR rubber surround.

• Nominal impedance [Zn]: 8 Ω
• Resonance frequency [fs]: 20 Hz
• Sensitivity [2.83 V⁄1m]: 87 dB
• Equivalent volume [Vas]: 134 l
• Total Q factor [Qts]: 0.31

See also:

Scan-Speak 21W/8555-00 - information in PDF format (465 Kb)

Review in Hobby HiFi #4-2013 Magazine (in German, 830 kБ)