L21/8613 LF subwoofer loudspeaker
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1.21"LF loudspeaker
2.subwoofer speaker
3.1200Watt RMS,98dB
4.6 inch voice coil,330mm magnet
5.23-900Hz frequency response
6. terrific LF loudspeaker for subwoofer of compass bass relex
7 Reasonable price for a 21" speaker like this which delivers good bass sound.This model is a new model with unique design and great power.
8.Hipower Audio is a professinal loudspeaker factory with experience in the speaker field for 8 years. We make our own tranducers ,HF drivers and empty cabinets.
| General Specifications | ||
| Nominal Diameter | 530/21 | mm/inch |
| Rated Impedance | 8 | ohm |
| Nominal Power handling1 | 1200 | Watts |
| Program Power2 | 2400 | Watts |
| Sensitivity(lw/lm)3 | 98 | dB |
| Frequency Range4 | 23-900 | Hz |
| Minimum Impedance(Zmin) | 9.3 | ohm |
| Voice Coil Diameter | 150/6 | mm/inch |
| Voice Coil Material | Copper | |
| Voice Coil Winding Depth | 30 | mm |
| Number of layers | 4(inside/outside) | |
| Magnet gap depth | 12 | mm |
| Surround Shape | Tripple-roll | |
| Basket | CastAluminum | |
| Flux Density | 1.1 | T |
| Magnet Material/Mass | Ceramic | |
| Thiele-Small parameters | |||
| Resonance frequency | Fs | 23.4 | Hz |
| DC resistance | Re | 6.5 | ohm |
| Mechanical factor | Qms | 14.4 | |
| Electrical factor | Qes | 0.22 | |
| Total factor | Qts | 0.22 | |
| Mechanical compliance | Cms | 0.1 | mm/N |
| Mechanical resistance of suspension losses | Rms | 4.94 | mech-ohm |
| Effective Moving Mass | Mms | 485 | gr |
| Half-space efficiency | Eff | 2.14 | % |
| BL Factor | BL | 45.9 | T.m |
| Equivalent Cas air load | Vas | 385 | liters |
| Effective piston area | Sd | 0.1698 | m2 |
| Max.linear excursion | Xmax | 12 | mm |
| Voice-coil inductance | LelK | 6.24 | mH |
| Mounting Information | ||
| Overall Diameter | 556 | mm |
| Bolt Circle Diameter | 528 | mm |
| Bolt Hole Diameter | 6.5 | mm |
| Baffle Cutout Diameter | 493 | mm |
| Overall Depth | 220 | mm |
| Net Weight 28.5Kg | ||
