Classic 8" Woofer
ScanSpeak
Type Number:21W/8551

Features

The Classic line consists of all the highly regarded transducers that have been appraised and loved by so many customers over the years. The goal has been to assemble all the diamonds, developed over the years, speakers that fully live up to the heritage of the brand.

Specs

Electrical Data
Nominal Impedance Zn 8 ohm
DC Resistance Re 5.5 ohm
Voice Coil Inductance Le 0.12 mH
TS Parameters
Resonance Frequency fs 31 Hz
Mechanical Q factor QMS 2.86
Electrical Q factor QES 0.29
Total Q factor Qts 0.26
Force Factor Bl 8.95 Tm
Mechanical Resistance Rms 1.5 Kg/s
Moving Mass Mms 22 g
Effective Piston Area sd 200 cm^2
Equivalent Volume Vas 70 ltrs
Sensitivity 2.83V/1m 91 dB
Power Handling
100h RMS noise test IEC 90 W
Voice Coil and Magnet Parameters
Voice Coil Diameter 42.5 mm
Voice Coil Height 17 mm
Height of the Gap 6 mm
Linear Excursion +/- 5.5 mm
Max mech. excursion +/- 10 mm
Flux density of gap 1.16 mWb

Frequency

Mechanical Dimensions