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| Nominal Basket Diameter |
8", 203.2mm |
| Nominal Impedance* |
8 ohms |
| Power Rating |
|
 Watts |
250W |
| Music Program |
500W |
| Resonance |
54Hz |
| Usable Frequency Range |
88Hz-20kHz* |
| Sensitivity*** |
92 |
| Magnet Weight |
38 oz. |
| Gap Height |
0.312", 7.92mm |
| Voice Coil Diameter |
2", 50.8mm |
| THIELE & SMALL PARAMETERS |
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| Resonant Frequency (fs) |
54Hz |
| DC Resistance (Re) |
5.53 |
| Coil Inductance (Le) |
0.96mH |
| Mechanical Q (Qms) |
7.67 |
| Electromagnetic Q (Qes) |
0.31 |
| Total Q (Qts) |
0.30 |
| Compliance Equivalent Volume (Vas) |
34.9 liters / 1.2 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) |
66cc |
| Mechanical Compliance of Suspension (Cms) |
0.59mm/N |
| BL Product (BL) |
9.5 T-M |
| Diaphram Mass inc. Airload (Mms) |
15 grams |
| Efficiency Bandwidth Product (EBP) |
174 |
| Maximum Linear Excursion (Xmax) |
3.2mm |
| Surface Area of Cone (Sd) |
205.9 cm2 |
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| Maximum Mechanical Limit (Xlim) |
6.9mm |
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| MOUNTING INFORMATION |
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| Recommended Enclosure |
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| Sealed |
5.7-8.5 liters/ 0.2-0.3 cu.ft. |
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| Vented |
8.5-17 liters/0.3-0.6 cu.ft. |
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| Overall Diameter |
8.24", 209.2mm |
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| Baffle Hole Diameter |
7.13", 181mm |
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| Front Sealing Gasket |
fitted as standard |
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| Rear Sealing Gasket |
fitted as standard |
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| Mounting Holes Diameter |
0.22", 5.5mm |
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| Mounting Holes B.C. D. |
7.75", 196.9mm |
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| Depth |
3.5", 89mm |
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| Net Weight |
6.8 lbs., 3.1 kg |
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| Shipping Weight |
7.5 lbs., 3.4 kg |
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| MATERIALS OF CONSTRUCTION |
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| Coil Construction |
Copper voice coil |
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| Coil Former |
Polyimide former |
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| Magnet Composition |
Ferrite magnet |
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| Core Details |
Extended core |
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| Basket Materials |
Pressed steel basket |
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| Cone Composition |
Paper Cone |
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| Cone Edge Composition |
Cloth cone edge |
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| Dustcap Composition |
Screened cloth dust cap |
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