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Speaker - Celestion, 15", T.F. Series 1525, 250W, 8Ω
This bass and mid range driver is suitable for use in 2-way systems, providing 98 dB of sensitivity.
RoHS Compliant
| Chassis Type | Pressed steel | |
| Coil Material | Round copper | |
| Cone Material | Kevlar-loaded paper | |
| Cut-out Diameter | 351 mm | |
| D | 330 mm | |
| Diameter | 15 in. | |
| Diaphragm/Coil Mass (Mmd) | 64.1 g | |
| Electrical Q Factor (Qes) | 0.66 | |
| Equivalent Acoustic Volume (VAS) | 152.5 liters | |
| Force Factor (BxL) | 13.5 Wb/m | |
| Former Material | Polyimide | |
| Frequency Range | 40 Hz - 3,000 Hz | |
| Gap Depth | 8 mm | |
| Magnet Type | Ferrite | |
| Magnet Weight | 42 oz. | |
| Maximum Linear Displacement (XMAX) | 2.5 mm | |
| Mechanical Compliance (CMS) | 0.149 mm/N | |
| Mechanical Moving Mass (MMS) | 78.2 g | |
| Mechanical Q Factor (QMS) | 5.9 | |
| Mechanical Resistance of Driver (Rms) | 3.94 kg/s | |
| Mounting Hole Bolt Circle Diameter | 369 mm | |
| Mounting Hole Length | 9.2 mm | |
| Mounting Hole Width | 6.2 mm | |
| Mounting Slots | 8 | |
| Nominal Diameter | 15 in. | |
| Nominal Impedance | 8 Ω | |
| Overall Depth | 153 mm | |
| Overall Diameter | 385 mm | |
| Power Rating | 250 Wrms | |
| Resonance Frequency (ƒS) | 47 Hz | |
| Sensitivity | 98 dB | |
| Surround Material | Cloth-sealed | |
| Suspension | Single | |
| Total Q Factor (QTS) | 0.59 | |
| Voice Coil DC Resistance (Re) | 5.21Ω | |
| Voice Coil Diameter | 2.5 in. | |
| Voice Coil Inductance @ 1 kHZ (LE) | 0.82 mH | |
| Voice Coil Winding Width | 13 mm |
| Packaging Dimensions | 16 in. × 15.8 in. × 6.9 in. | |
| Weight (Packaging) | 11.45 lbs. |
 Specification Sheet | All Models |
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