< p> AI-Sonic S1-Series 6,5″ 2-way component speaker system with coaxial option.< br> You can easily remove the ″face plug″ and install tweeter instead to make this speaker coaxial!< br> Sandplasted stainless steel basket.< br> 1″ ASV voice coil.< br> 20mm Silk dome neodymium tweeter.< br> 2-way passive crossover with rubber housing.< br> < br> - Impedance 4 Ohm< br> - Tweeter crossover 12dB / oct< br> - Midbass crossover 6dB / oct< br> - Crossover cutoff 4900Hz< br> - Power recommendation 25-130W< br> - Sensitivity 89dB< br> - Woofer outer diameter 165mm< br> - Woofer mounting diameter 142,7mm< br> - Woofer mounting depth with rubber 63mm< br> - Tweeter outer diameter 36mm< br> - Tweeter mounting 33mm< br> - Tweeter mounting depth 8,7mm< /p>