21W/8555-10
UPDATED: 21W/8555.00 now has an Aluminium chassis and becomes 21W/8555.10, no other changes.
Popular classic range 8 inch bass speaker that has been used in various mainstream designs across the years ~ the sound is very smooth, natural & uncoloured with good bass extension.
The treated mixed fibre (pulp and carbon) composite cone has excellent self damping characteristics. Strong Aluminium alloy chassis. 8 Ohms.
Solid choice for quality three way DIY / home built designs.
| Resonant frequency (fs) | 20 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 4.50 | DC resistance (Re) | 5.5 Ω |
| Electrical Q factor (Qes) | 0.33 | RMS power handling | 100 W |
| Total Q factor (Qts) | 0.31 | Sensitivity (2.83V/1m) | 87 dB |
| Equivalent volume (Vas) | 134L | Chassis diameter | 222 mm |
