12 inch powerful professional audio mid bass woofer speaker for pro audio
INTRODUCTION
Hengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make different tranducers, compression drivers. We not only provide goods but technology. OEM and ODM are both welcome.
| General Specifications | ||
| Nominal Diameter | 300/12 | mm/inch |
| Rated Impedance | 8 | ohm |
| Nominal Power handling | 350 | Watts |
| Program Power | 700 | Watts |
| Sensitivity(lw/lm) | 97 | dB |
| Frequency Range | 38.7-2.2K | Hz |
| Minimum Impedance(Zmin) | 5.6 | ohm |
| Voice Coil Diameter | 75 | mm/inch |
| Voice Coil Material | Aluminium | |
| Number of layers | 2 | |
| Magnet gap depth | 12 | mm |
| Surround Shape | M-roll | |
| Basket | Cast Aluminium | |
| Magnet | 180 Ferrite | |
| Mounting Information | ||
| Overall Diameter | 313 | mm |
| Bolt Circle Diameter | 295 | mm |
| Baffle Cutout Diameter | 287 | mm |
| Overall Depth | 147 | mm |
| Net Weight | 6.5 | kg |
| Shipping weight | 7.2 | kg |
| Shipping Box | 320*320*150 | mm |
| Thiele-Small Parameters | |||
| Resonance frequency | Fs | 38.7 | Hz |
| DC resistance | Re | 5.6 | ohm |
| Mechanical factor | Qms | 6.77 | |
| Electrical factor | Qes | 0.37 | |
| Total factor | Qts | 0.35 | |
| Mechanical compliance | Cms | 0.23 | mm/N |
| Mechanical resistance | Rms | 2.7 | mech-ohm |
| of suspension losses | |||
| Effective Moving Mass | Mms | 74.5 | gr |
| Half-space efficiency | Eff | 1.37 | % |
| BL Factor | BL | 16.6 | T.m |
| Equivalent Cas air load | Vas | 89.7 | liters |
| Voice-coil inductance | LelK | 0.8 | mH |
INTRODUCTION
Hengda Audio is a professinal speaker manufacturer with experience in the PA speaker field for 10years. We make different tranducers, compression drivers. We not only provide goods but technology. OEM and ODM are both welcome.