Specification Sheet - 12" Nighthawk 75
12" - 75 W Jet Series Loudspeaker
General Characteristics | ||
---|---|---|
Nominal Overall Diameter | 307 mm | 12 in |
Nominal Voice Coil Diameter | 44 mm | 1.73 in |
Magnet Weight | 1450 g | 51 oz |
Overall Weight | 4.3 kg | 9.48 lbs |
Flux Density | 1.29 T | |
Voice Coil Winding Depth | 10 mm | 0.39 in |
Magnetic Gap Depth | 8 mm | 0.31 in |
Thiele-Small Parameters |
8Ω
|
16Ω
|
||
---|---|---|---|---|
Voice Coil DC Resistance | RE | 6.06 | 12.04 | Ω |
Resonance Frequency | ƒS | 83 | 88.4 | Hz |
Mechanical Q Factor | QMS | 13.2 | 13.18 | |
Total Q Factor | QTS | 0.64 | 0.72 | |
Mechanical Moving Mass | MMS | 29.7 | 27.6 | g |
Mechanical Compliance | CMS | 124 | 118 | µm/N |
Force Factor | BxL | 11.79 | 15.57 | Wb/m |
Equivalent Acoustic Volume | VAS | 42.4 | 40 | lt. |
Maximum Linear Displacement | XMAX | ±1 | mm | |
Reference Efficiency | nO | 3.42 | % | |
Diaphragm Area | SD | 490.9 | 490.9 | cm2 |
Losses Electrical Resistance | RES | 159.7 | Ω | |
Voice Coil Inductance @ 1kHz | LE | 0.62 | 0.81 | mH |
Electrical Q Factor | QES | 0.67 | 0.76 |
Constructive Characteristics | ||
---|---|---|
Magnet | Ferrite | |
Voice Coil Winding | Aluminum | |
Voice Coil Former | Fiberglass | |
Cone Material | Paper | |
Surround Material | Integrated Paper | |
Dust Dome Material | Non-treated Cloth | |
Basket Material | Pressed Sheet Steel | |
Surround Treatment | Yes |