RCF LF21N451 - LIGHTWEIGHT HIGH POWER 21" WOOFER
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RCF LF21N451 - LIGHTWEIGHT HIGH POWER 21" WOOFER |
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SUPER STRONG CHEST POUNDING BASS DOWN TO 30HZ THANKS TO ITS HIGH 13.2MM XMAX! |
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Item Price: $1,068.95 |
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WOOFER
MODEL |
LF21N451 |
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SPECIFICATIONS |
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Nominal Basket Diameter |
21" |
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Impedance |
8 ohms |
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AES Power Rating |
1,500 Watts |
| Program Power | 3,000 Watts |
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Frequency Response |
30Hz - 1.0kHz |
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Sensitivity (1W/1m) |
98.5dB |
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Voice Coil Diameter |
4.5" / 115mm |
| Max. Excursion Before Damage | 2.28" / 58mm |
| Voice Coil Winding Depth | 1.3" / 34mm |
| Number Of Layers | 2 |
| Kind Of Layer | Inside/Outside |
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MATERIALS |
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| Cone Material | No Pressed Pulp-Carbon Fiber Reinforced |
| Cone Design | Curved |
| Voice Coil Material | Copper |
| Diaphragm Material | Paper Pulp |
| Surround Material | Polycotton |
| Surround Design | Triple Roll |
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MOUNTING INFORMATION |
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Overall Diameter |
21.5" / 547mm |
| Bolt Circle Diameter | 20.7" / 527mm |
| Baffle Cutout Diameter | 20" / 508mm |
| No. Of Mounting Holes | 8 |
| Mounting Hole Diameter | 0.25" / 6.5mm |
| Overall Depth | 9.8" / 250mm |
| Flange Thickness | .6" / 15mm |
| Volume Displaced By Driver | 6.5 Liters / .229ft^3 |
| Net Weight | 10.9 kg. / 24 lbs. |
| Shipping Weight | 12.1 kg. / 26.6 lbs. |
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THIELE-SMALL PARAMETERS |
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| Resonant Frequency (fs) | 30 Hz |
| Impedance (Re) | 5.6 ohms |
| Coil Inductance (Le) | 3.0mH |
| Electromagnetic Q (Qes) | .27 |
| Mechanical Q (Qms) | 6.1 |
| Total Q (Qts) | .26 |
| BL Factor | 34.5TM |
| Moving Mass (MMS) | 315 Grams |
| Compliance Equivalent Vol. (Vas) | 375 Liters/13.24cu. ft. |
| Voice Coil Overhang (Xmax) | 13.2mm |
| Surface Area Of Cone | .176m2 |
| Reference Efficiency | 4.0% |
US Speaker, LLC
