This 25cm Subwoofer has a robust thermal management system, implemented with an Aluminium 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.
Aluminium bobbin for better thermal conductivity
Airflow control for optimal heat radition
Stress controlled spider
Push-terminals for easy connection
Sealed/Ported installation Capability
Speaker Features
Speaker Size 250mm
Oversized Dimension
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 Capability 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
Speaker Basket Steel
Speaker Surround Foam
Spider Type Stress controlled Spider
Sensitivity 85dB/W/m
Frequency Response 33Hz ~ 300Hz
Speaker Impedance 4Ω
Dimensions (W x H x D) 275 x 275 x 142.2mm
Mounting Depth 124mm
Mounting Hole Diameter Ø 230mm
Speaker Weight 4200gr
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 acoustic compliance (VAS) 31.9liter
Piston Area (SD) 0.0512m²
Displacement 0.9cc
Sealed box volume 18.4 litre
Sealed Box Dimensions 375 x 324 x 229mm ( 18mm thick MDF)(WxHxD)
Vented box volume 25.5 litre
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