This 25cm Subwoofer has a robust thermal management system, implemented with an Aluminum Bobbin, Closed Yoke Design, and Advanced Airflow Control. The X-Motif Cap (Injection Molded Polypropylene) controls resonance frequency and cut away unnecessary high frequency sound to deliver powerful, solid bass.
| Key Features | 250mm Polypropylene Cone (PP Cone) | |
| 400 Rated/RMS Input Power | ||
| High-ridged Two-piece Diaphragm for solid bass | ||
| X-motif cap Technology for resonance control | ||
| Single, multi-layered, voice coil. | ||
| Aluminum bobbin for better thermal conductivity | ||
| Airflow control for optimal heat radition | ||
| Stress controlled spider | ||
| Push-terminals for easy connection | ||
| Sealed/Ported installation capabillity | ||
| Speaker Features | Speaker Size | 250mm |
| Oversized Dimension | Yes | |
| Speaker Cone Design | Diamond-Array pattern | |
| Magnet Type | Ferrit | |
| Voice-coil | single, multi-layer voice coil | |
| Terminals | Push Type | |
| Spider | Stress controlled spider | |
| Bottom-Yoke | Fully closed bottom yoke | |
| Heat dissipation technology | Airflow control | |
| Installation Capabillity | Sealed / Ported |
| Speaker/woofer Specifications | Peak Input Power | 1300W |
| Rated Input Power | 400W | |
| Woofer Cone material | Polypropylene (PP) Cone | |
| Center Cap Type | x-motif cap | |
| Spider Type | Stress controlled Spider | |
| Speaker Basket | Steel | |
| Speaker Surround | Foam | |
| Sensitivity | 85dB/W/m | |
| Frequency Response | 33Hz ~ 300Hz | |
| Speaker Impedance | 4Ω | |
| Dimensions (W x H x D) | 275 x 275 x 142.2mm | |
| Mouting Hole Diameter Ø | 230mm | |
| Mounting Depth | 124mm | |
| Speaker Weight | 4000gr |
| Subwoofer Parameters | Nominal impedance (Z) | 4Ω |
| DC resistance (Re) | 3.7Ω | |
| Resonant frequency (FSO) | 33.7Hz | |
| Mechanical Q factor (QMS) | 6.95 | |
| Electrical Q factor (QES) | 0.554 | |
| Total Q factor (QTS) | 0.513 | |
| Voice coil inductance (LBM) | 1.9mH | |
| Voice coil diameter (d) | 50mm | |
| Force factor (BL) | 13.2T/m | |
| Peak excursion Xmax | 5.9mm | |
| Moving mass (MMS) | 124gr. | |
| Volume accoustic compliance (VAS) | 31.9liter | |
| Piston Area (SD) | 0.0512m² | |
| Displacement | 0.9cc | |
| Sealed box volume | 18.4liter | |
| Sealed Box Dimensions | 375 x 324 x 229mm ( 18mm thick MDF)(WxHxD) | |
| Vented box volume | 25.5liter | |
| Vented Box Dimensions | 464 x 311 x 330mm ( 18mm thick MDF)(WxHxD) | |
| Port dimensions (labyrinth) (W x H x L) | 29 x 273 x 648mm |