

Blastking PROFILE21 21" 4000 Watts High Output Woofer
Key item features
- Powerful Performance: This 21-inch woofer delivers 4000 Watts of program power with a 5-inch voice coil and a sensitivity of 97.2 dB, ensuring high output.
- Broad Frequency: It offers a wide frequency response ranging from 32 Hz to 1500 Hz, capable of producing very low frequencies for diverse audio applications.
- Robust Construction: Built with a high-quality die-cast aluminum frame and a heavy-duty 200 Oz ferrite magnet, it ensures durability and increased power handling.
- Efficient Cooling: Features forced air ventilation to maintain optimal operating temperatures during extended use.
- Precise Dimensions: The woofer has an overall diameter of 552 mm (21.73 inches) and a depth of 230 mm (9.05 inches), with a net weight of 22.8 Kg (50.3 Lbs).
- Versatile Mounting: Designed for both front and rear mount baffle cut-out of 512 mm (20.16 inches), suitable for reflex or horn-loaded cabinets.
- Advanced Engineering: Incorporates a 127 mm (5 inch) fiberglass voice coil with a 2-layer inside/outside winding for enhanced performance.
Specs
- Woofer size21 in
- Is poweredN
- Rms power rating2000 W
- Subwoofer typeSubwoofer
- Impedance8 ohm
- Peak audio power handling4000 W
- Free shipping
Free 30-day returns
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About this item
Product details
- 5" Voice Coil|4000 Watts Program Power|97.2 dB sensitivity|32 Hz - 1500 Hz frequency response|Forced air ventilation
- Brand: Blastking
- Model Name: PROFILE21
- Model Number: PROFILE21
- Number of Items: 1
- Speaker Maximum Output Power: 400 Watts
- Power Source: Corded Electric
- Mounting Type: Flush Mount
- Speaker Size: 21 Inches
- Control Method: Voice
- Controller Type: Voice Control
- Is Waterproof: FALSE
- Speaker Type: Woofer
The BlastKing Profile series brings high output, low frequency woofers in 12", 15", 18" and 21" options. These transducers are capable of very low frequencies and are intended for use in a reflex or horn loaded cabinets. They are all made in a high-quality die cast aluminum frame and boast a heavy-duty ferrite magnet that allows for increased power ratings. The Profile transducers are perfect for those needing high level, low frequency output transducers with very low distortion.
Features
5" Voice Coil
4000 Watts Program Power
97.2 dB sensitivity
32 Hz - 1500 Hz frequency response
Forced air ventilation
General Specifications
Basket Diameter: 533 mm / 21 inch
Rated Impedance: 8 ohm
2000 Watts Rated Power Handling
4000 Watts Program Power
Sensitivity: 97.2 dB
Frequency Range: 32-1500 Hz
Magnet Weight: 200 Oz
Magnet Composition: Ferrite Magnet
Voice Coil Diameter: 127 mm / 5 inch
Basket Materials: Aluminum
Shipping Information
Net Weight: 22.8 Kg/ 50.3 Lbs
Barcode: 686811893668
- FEATURES 5 Voice Coil 4000 Watts Program Power 97.2 dB sensitivity 32 Hz - 1500 Hz frequency response Forced air ventilation SPECIFICATIONS Nominal Basket Diameter : 533 mm / 21 inch Rated Impedance : 8 ohm
- SPECIFICATIONS Rated Power Handling : 2000 Watts Program Power : 4000 Watts Sensitivity : 97.2 dB Frequency Range : 32 hz - 1500 hz Magnet : 200 Oz / 280x140x25 mm / 11x5.5x1 inch Minimum Impedance : 5.3 ohm Voice Coil Diameter : 127 mm / 5 inch Voice Coil Material : Fiberglass Voice Coil Length : 25 mm / 1 inch Number of Layers : 2 Kind of Layers : inside/outside Top Plate Thickness : 15 mm / 0.59 inch
- THIELE SMALL PARAMETERS Resonance Frequency fs : 32 hz DC Resistence Re : 35.3 ohm Mechanical Factor Qms : 35.04 Electrical Factor Qes : 30.4 Total Factor Qts : 30.37 BL Factor BL : 332.4 T m Effective Moving Mass Mms : 3278.8 gr Equivalent Cas Air Load Vas : 3289.6 liters Effective Piston Area Sd : 30.123 M Maximum Linear Excursion Xmax : 39 mm Half-Space Efficency Eff : 32.2 %
- MOUNTING INFORMATION Overall Diameter : 552 mm / 21.73 inch Bolt Circle Diameter : 527 mm / 20.7 inch Bolt Hole Diameter : 6.5 mm / 0.25 inch Front Mount Baffle Cut-Out : 512 mm / 20.16 inch Rear Mount Baffle Cut-Out : 512 mm / 20.16 inch Depth : 230 mm / 9.05 inch PHYSICAL INFORMATION Net Weight : 22.8 Kg / 50.3 Lbs Shipping Weight : 25.4 Kg / 56 Lbs Dimension WxDXH : 610x610x330 mm / 24x24x13 inch
- The BlastKing Profile series brings high output, low frequency woofers in 12, 15, 18 and 21 options. These transducers are capable of very low frequencies and are intended for use in a reflex or horn loaded cabinets. They are all made in a high-quality die cast aluminum frame and boast a heavy-duty ferrite magnet that allows for increased power ratings. The Profile transducers are perfect for those needing high level, low frequency output transducers with very low distortion.
Specifications
Woofer size
Is powered
Rms power rating
Subwoofer type
Warranty
Warranty information
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| Product | Viewing this itemBlastking PROFILE21 21" 4000 Watts High Output Woofer ![]() $395.99 current price $395.99 | PowerBass 12 inch Dual Subwoofer System with Amplifier ![]() $349.00 current price $349.00 | Sound Town 21" Raw Woofer Speaker, 600 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver (STLF-21120) ![]() $209.99 current price $209.99 | Belva BPKG212v2 1200W Dual 12” Subwoofers Ported Box Amp Kit 1 Farad Capacitor Bass Package ![]() $299.94 current price $299.9425 out of 5 Stars. 2 reviews | 18 in. 4 Ohm Recone Kit for 3400W Neodymium Subwoofer Speaker ![]() $284.03 current price $284.03 | PowerBass 12 inch Single Subwoofer System with Amplifier ![]() $249.99 current price $249.99 | YIEMEEN 3Inch Subwoofer Woofer 40W Low Frequency Speaker 4ohm for Auditory Loudspeaker ![]() $20.73 current price $20.73 | Klipsch Reference R-12SW 12" 400W All-Digital Powered Subwoofer, Brushed Black Polymer Veneer ![]() $229.00 current price $229.00604.6 out of 5 Stars. 60 reviews | 2.5Inch 15W 4Ohm Full Frequency Subwoofer Hifi Speaker for Home Music Systems ![]() Now $18.08 current price Now $18.08, Was $20.32$20.32 | NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer ![]() $113.99 current price $113.99 |
|---|
| Woofer size | 21 inBlastking PROFILE21 21" 4000 Watts High Output Woofer | 12 inPowerBass 12 inch Dual Subwoofer System with Amplifier | 21 inSound Town 21" Raw Woofer Speaker, 600 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver (STLF-21120) | 12 inBelva BPKG212v2 1200W Dual 12” Subwoofers Ported Box Amp Kit 1 Farad Capacitor Bass Package | 18 in18 in. 4 Ohm Recone Kit for 3400W Neodymium Subwoofer Speaker | 12 inPowerBass 12 inch Single Subwoofer System with Amplifier | 3.07 inYIEMEEN 3Inch Subwoofer Woofer 40W Low Frequency Speaker 4ohm for Auditory Loudspeaker | 12Klipsch Reference R-12SW 12" 400W All-Digital Powered Subwoofer, Brushed Black Polymer Veneer | 3.03 in2.5Inch 15W 4Ohm Full Frequency Subwoofer Hifi Speaker for Home Music Systems | -NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer |
|---|---|---|---|---|---|---|---|---|---|---|
| Is powered | NBlastking PROFILE21 21" 4000 Watts High Output Woofer | YPowerBass 12 inch Dual Subwoofer System with Amplifier | YSound Town 21" Raw Woofer Speaker, 600 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver (STLF-21120) | YBelva BPKG212v2 1200W Dual 12” Subwoofers Ported Box Amp Kit 1 Farad Capacitor Bass Package | N18 in. 4 Ohm Recone Kit for 3400W Neodymium Subwoofer Speaker | YPowerBass 12 inch Single Subwoofer System with Amplifier | NYIEMEEN 3Inch Subwoofer Woofer 40W Low Frequency Speaker 4ohm for Auditory Loudspeaker | YKlipsch Reference R-12SW 12" 400W All-Digital Powered Subwoofer, Brushed Black Polymer Veneer | N2.5Inch 15W 4Ohm Full Frequency Subwoofer Hifi Speaker for Home Music Systems | YNA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer |
| Rms power rating | 2000 WBlastking PROFILE21 21" 4000 Watts High Output Woofer | 550 WPowerBass 12 inch Dual Subwoofer System with Amplifier | 600 WSound Town 21" Raw Woofer Speaker, 600 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver (STLF-21120) | 600 WBelva BPKG212v2 1200W Dual 12” Subwoofers Ported Box Amp Kit 1 Farad Capacitor Bass Package | 11700 W18 in. 4 Ohm Recone Kit for 3400W Neodymium Subwoofer Speaker | 275 WPowerBass 12 inch Single Subwoofer System with Amplifier | 40 WYIEMEEN 3Inch Subwoofer Woofer 40W Low Frequency Speaker 4ohm for Auditory Loudspeaker | 400 WKlipsch Reference R-12SW 12" 400W All-Digital Powered Subwoofer, Brushed Black Polymer Veneer | 15 W2.5Inch 15W 4Ohm Full Frequency Subwoofer Hifi Speaker for Home Music Systems | 500 WNA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer |
| Subwoofer type | SubwooferBlastking PROFILE21 21" 4000 Watts High Output Woofer | SubwooferPowerBass 12 inch Dual Subwoofer System with Amplifier | SubwooferSound Town 21" Raw Woofer Speaker, 600 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver (STLF-21120) | SubwooferBelva BPKG212v2 1200W Dual 12” Subwoofers Ported Box Amp Kit 1 Farad Capacitor Bass Package | Subwoofer18 in. 4 Ohm Recone Kit for 3400W Neodymium Subwoofer Speaker | SubwooferPowerBass 12 inch Single Subwoofer System with Amplifier | SubwooferYIEMEEN 3Inch Subwoofer Woofer 40W Low Frequency Speaker 4ohm for Auditory Loudspeaker | Home Theater SubwooferKlipsch Reference R-12SW 12" 400W All-Digital Powered Subwoofer, Brushed Black Polymer Veneer | Subwoofer2.5Inch 15W 4Ohm Full Frequency Subwoofer Hifi Speaker for Home Music Systems | SubwooferNA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer |
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