Specification Sheet - P8R
8" - 25 W Vintage Alnico Loudspeaker
| General Characteristics | ||
|---|---|---|
| Nominal Overall Diameter | 207 mm | 8 in |
| Nominal Voice Coil Diameter | 25 mm | 0.98 in |
| Magnet Weight | 200 g | 7 oz |
| Overall Weight | 1.2 kg | 2.65 lbs |
| Flux Density | 0.96 T | |
| Voice Coil Winding Depth | 4 mm | 0.16 in |
| Magnetic Gap Depth | 6 mm | 0.24 in |
| Thiele-Small Parameters |
4Ω
|
8Ω
|
||
|---|---|---|---|---|
| Voice Coil DC Resistance | RE | 3 | 6.6 | Ω |
| Resonance Frequency | ƒS | 129 | 135 | Hz |
| Mechanical Q Factor | QMS | 8.67 | 8.67 | |
| Total Q Factor | QTS | 1.43 | 2.28 | |
| Mechanical Moving Mass | MMS | 9.3 | 8.8 | g |
| Mechanical Compliance | CMS | 164 | 159 | µm/N |
| Force Factor | BxL | 3.72 | 3.99 | Wb/m |
| Equivalent Acoustic Volume | VAS | 10.5 | 10.3 | lt. |
| Maximum Linear Displacement | XMAX | ±1 | ±1 | mm |
| Reference Efficiency | nO | 1.27 | 0.95 | % |
| Diaphragm Area | SD | 213.8 | 213.8 | cm2 |
| Losses Electrical Resistance | RES | 16 | 27 | Ω |
| Voice Coil Inductance @ 1kHz | LE | 0.21 | 0.36 | mH |
| Electrical Q Factor | QES | 1.71 | 3.09 | |
| Constructive Characteristics | ||
|---|---|---|
| Magnet | Alnico | |
| Voice Coil Winding | Copper | |
| Voice Coil Former | Epotex | |
| Cone Material | Paper | |
| Surround Material | Integrated Paper | |
| Dust Dome Material | Solid Paper | |
| Basket Material | Pressed Sheet Steel | |
| Surround Treatment | Yes | |
| Electrical Characteristics |
4Ω
|
8Ω
|
||
|---|---|---|---|---|
| Nominal Impedance | 4 | 8 | Ω | |
| Rated Power | 25 | 25 | W | |
| Musical Power | 50 | 50 | W | |
| Sensitivity@1W,1m | 94.1 | 91.8 | dB | |
Product Dimensions
