B&C RCK21DS115-4 21" Recone Kit

This item is brand-new, factory sealed.

• GENERAL || Brand : B&C Speakers || Model Number : R21DS115-4 | R21DS115 | RCK21DS1154 || UPC : 8059300648988 | 718852125122 || This next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, higher sensitivity, lower distortion and better overall performance. The 21DS115-4 features a 40mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. || LF Recone Kit || Cone, Basket, Centering Shims ||
• "FEATURES || Lightweight but powerful FEA-optimized neodymium magnet || Extremely high BL factor and Xmax for outstanding LF output || 14 mm Xmax, 60 mm peak-to-peak excursion before damage || 4.5"" split winding copper voice coil on fiberglass former || Ventilated voice coil gap reduces power compression || Aluminum demodulation ring on pole piece reduces distortion || Double silicone spider ||
• "SPECIFICATIONS || Nominal diameter: 530 mm (21.0 in) || Nominal impedance: 4 Ohm || Minimum impedance: 4.2 Ohm || Nominal power handling: 1700 W || Continuous power handling: 3400 W || Sensitivity (1W/1m): 97.0 dB || Frequency range: 33 - 1000 Hz || Voice coil diameter: 116 mm (4.5 in) || Winding material: Copper || Former material: Glass Fibre || Winding depth: 34 mm (1.34 in) || Magnetic gap depth: 14 mm (0.55 in) || Flux density: 1.15 T ||
• "PARAMETERS || Fs: 33 Hz || Re: 3.6 || Qes: 0.37 || Qms: 7.7 || Qts: 0.36 || Vas: 278.0 dm3 (9.7 ft3) || Sd: 1680.0 cm2 (260.4 in2) || o: 2.6 % || Xmax: 14.0 mm || Xvar: 15.0 mm || Mms: 335 g || Bl: 24.8 Txm || Le: 1.7 mH || EBP: 89 Hz ||
• "MOUNTING INFORMATION || Overall diameter: 547 mm (21.5 in) || Bolt circle diameter: 527 mm (20.7 in) || Baffle cutout diameter: 508.0 mm (20.0 in) || Depth: 250 mm (9.9 in) || Flange and gasket thickness: 14 mm (0.53 in) || Air volume occupied by driver: 15.0 dm3 (0.53 ft3) || Net weight: 14.0 kg (30.8 lb) || Shipping units: 1 || Shipping weight: 16.4 kg (36.1 lb) || Shipping box: 590x590x300 mm (23.1x23.1x11.8 in)

• Material: Aluminum
• Model Name: R21DS115-4
• Speaker Type: Subwoofer
• Recommended Uses For Product: For DVD Players, For Gaming Consoles, For Surround Sound Systems
• Compatible Devices: Gaming Console, Home Theater, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television
• Unit Count: 1.0 Count
• Surround Sound Channel Configuration: 4.2
• Included Components: B&C Speakers R21DS115-4 21-inch Recone Kit For 21DS115-4 Neodymium Subwoofer
• Product Dimensions: 23.1"D x 23.1"W x 11.8"H
• Item Weight: 30.8 Pounds
• Impedance: 4 Ohm
• Is Waterproof: True
• Number of Items: 1
• Control Method: Touch
• Speaker Size: 21 Inches
• Power Source: Corded Electric
• Woofer Diameter: 21 Inches
• Audio Driver Type: Dynamic Driver
• Audio Driver Size: 21 Inches
• Subwoofer Connectivity Technology: Wired
• Specific Uses For Product: Car, Party
• Manufacturer: B&C Speakers
• Item Weight: 30.8 pounds

This next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, higher sensitivity, lower distortion and better overall performance. The 21DS115-4 features a 40mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. With a 1700 watt AES power rating, 97 dB sensitivity, and over 14.0mm of Xvar, this high energy subwoofer is a significant step forward from similar models in the B&C range. GENERAL || Brand : B&C Speakers || Model Number : R21DS115-4 | R21DS115 | RCK21DS1154 || UPC : 8059300648988 | 718852125122 || FEATURES || Lightweight but powerful FEA-optimized neodymium magnet || Extremely high BL factor and Xmax for outstanding LF output || 14 mm Xmax, 60 mm peak-to-peak excursion before damage || 4.5" split winding copper voice coil on fiberglass former || Ventilated voice coil gap reduces power compression || Aluminum demodulation ring on pole piece reduces distortion || Double silicone spider || SPECIFICATIONS || Nominal diameter: 530 mm (21.0 in) || Nominal impedance: 4 Ohm || Minimum impedance: 4.2 Ohm || Nominal power handling: 1700 W || Continuous power handling: 3400 W || Sensitivity (1W/1m): 97.0 dB || Frequency range: 33 - 1000 Hz || Voice coil diameter: 116 mm (4.5 in) || Winding material: Copper || Former material: Glass Fibre || Winding depth: 34 mm (1.34 in) || Magnetic gap depth: 14 mm (0.55 in) || Flux density: 1.15 T || PARAMETERS || Fs: 33 Hz || Re: 3.6 || Qes: 0.37 || Qms: 7.7 || Qts: 0.36 || Vas: 278.0 dm3 (9.7 ft3) || Sd: 1680.0 cm2 (260.4 in2) || o: 2.6 % || Xmax: 14.0 mm || Xvar: 15.0 mm || Mms: 335 g || Bl: 24.8 Txm || Le: 1.7 mH || EBP: 89 Hz || MOUNTING INFORMATION || Overall diameter: 547 mm (21.5 in) || Bolt circle diameter: 527 mm (20.7 in) || Baffle cutout diameter: 508.0 mm (20.0 in) || Depth: 250 mm (9.9 in) || Flange and gasket thickness: 14 mm (0.53 in) || Air volume occupied by driver: 15.0 dm3 (0.53 ft3) || Net weight: 14.0 kg (30.8 lb) || Shipping units: 1 || Shipping weight: 16.4 kg (36.1 lb) || Shipping box: 590x590x300 mm (23.1x23.1x11.8 in) ||