Due to its complex ATL™ the twenty.21 has significantly more dynamic grip and depth of bass than any other speaker of this size.
Technical Data:
| Available Finishes | Jet Black |
| Crossover Frequency | 1.8kHz |
| Dimensions | H 325mm 12.8” × W 152mm 6.0” × D 277mm 11.0” (+6mm grille) |
| Drive Units | LF PMC twenty series, lightweight doped 5.5”/140mm cone with cast alloy chassis, HF PMC/SEAS®, 27mm twenty series, SONOLEX™ soft dome, Ferrofluid cooled |
| Effective ATL™ Length | 1.72m / 5.6ft |
| Frequency Response | 50Hz – 25kHz |
| Impedance | 8Ohm |
| Input Connectors | 2 pairs 4mm sockets (Bi-amp or Bi-wire) |
| Sensitivity | 87dB 1w 1m |
| Weight | 5kg (11lbs) |
| Brochure | Download |
| Manual | Download |
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