B&C 21DS115-4 21" Professional Neodymium Subwoofer 4 Ohm
ontinuous program power capacity 116 mm (4.5 in) four layer aluminum voice coil 30 - 1000 Hz response99 dB sensitivityDouble silicone spider with optimized complianceVentilated voice coil gap for reduced power compressionAluminium demodulating ring for very low distortionThis next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, less heat, higher sensitivity, higher power handling, lower distortion and better overall performance. The 21DS115 features a 36 mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. With a 1700watt AES power rating, 99 dB sensitivity, and over 16.5mm of Xvar, this high energy subwoofer is a significant step forward from similar models in the B&C range, even approaching the performance of our 6” voice coil alternatives. B&C Speakers s.p.a.Via Poggiomoro, 1 - Loc. Vallina, 50012 Bagno a Ripoli (FI) - ITALY - T 3400 WContinuous power handling 4.5 in (116 mm)Voice coil diameter Neodymium Inside SlugMagnet material This next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, less heat, higher sensitivity, higher power handling, lower distortion and better overall performance. The 21DS115 features a 36 mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. With a 1700watt AES power rating, 99 dB sensitivity, and over 16.5mm of Xvar, this high energy subwoofer is a significant step forward from similar models in the B&C range, even approaching the performance of our 6” voice coil alternatives. Last viewed products Features 3400 W continuous program power capacity 116 mm (4.5 in) four layer aluminum voice coil 30 - 1000 Hz response 99 dB sensitivity Double silicone spider with optimized compliance Ventilated voice coil gap for reduced power compression Aluminium demodulating ring for very low distortion Parameters Specifications Nominal Diameter530 mm (21.0 in) Nominal Impedance8 Ω Minimum Impedance6.5 Ω Nominal Power Handling11700 W Continuous Power Handling23400 W Sensitivity399.0 dB Frequency Range30 - 1000 Hz Voice Coil Diameter116 mm (4.5 in) Winding MaterialAluminium Former MaterialGlass Fibre Winding Depth36.0 mm (1.42 in) Magnetic Gap Depth14.0 mm (0.55 in) Flux Density0.8 T Design Surround ShapeTriple Roll Cone ShapeRadial Magnet MaterialNeodymium Inside Slug SpiderDouble Silicone Pole DesignT-Pole Woofer Cone TreatmentTWP Waterproof Both Sides Recommended Enclosure130.0 dm3 (4.59 ft3) Recommended Tuning40 Hz Parameters4 Resonance Frequency30 Hz Re5.1 Ω Qes0.24 Qms10.0 Qts0.23 Vas269.0 dm3 (9.5 ft3) Sd1680.0 cm2 (260.4 in2) η₀3.0 % Xmax15.0 mm Xvar16.5 mm Mms407.0 g Bl40.8 Txm Le4.6 mH EBP125 Hz