B&C 21DS115 4 Ohm Lautsprecher

This next-generation 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 voice coil with a diameter of 4.5 inches (116 mm) made of copper-coated aluminum wire. With an AES output of 1700 watts, a sensitivity of 99 dB and more than 16.5 mm Xvar, this high energy subwoofer is a significant advance over similar models in the B&C range and even comes close to the performance of our alternative 6-inch voice coils.

Features:

• Nominal diameter: 530 mm
• Nominal impedance: 4 Ohm
• Minimum impedance: 3.1 Ohm
• Rated power handling: 1700 W
• Continuous power handling: 3400 W
• Sensitivity: 99.0 dB
• Frequency range: 30 - 1000 Hz
• Voice coil diameter: 116 mm
• Winding material: Aluminum
• Coil former material: Glass fiber
• Winding depth: 36.0 mm
• Magnet gap depth: 14.0 mm
• Flux density: 0.8 T
• Sheath shape: Triple roller
• Cone shape: Radial
• Magnet material: Neodymium
• Spider: Double silicone
• Pole construction: T-pole
• Woofer cone treatment: TWP waterproof on both sides
• Recommended cabinet: 130.0 dm³
• Recommended tuning: 40 Hz
• Resonant frequency: 30 Hz
• Re: 2.2 Ohm
• Qes: 0.2
• Qms: 11.0
• Qts: 0.21
• Vas: 274.0 dm3
• Sd: 1680.0 cm2
• Nr: 3.4 %
• Xmax: ± 15.0 mm
• Xvar: ± 17.0 mm
• Mms : 412.0 g
• Bl: 28.8 Txm
• Le: 2.4 mH
• EBP 150 Hz
• Total diameter: 547 mm
• Pitch circle diameter: 527 mm
• Diameter of the baffle cut-out: 508.0 mm
• Depth: 255 mm
• Flange and seal thickness: 13 mm
• Air volume used by the driver: 15.0 dm3
• Shipping weight: 17.1 kg
• Shipping box: 570 × 570 × 320 mm

Specs:

• Type: Replacement Part
• Theme: PA and Sonication

Further links:

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