The 1208-4 SPS BWX™ features a new cone that is stronger and tougher, highly water resistant, and a specially designed surround with an innovative asymmetrical-M design that improves mid range clarity.
Specifications
- Power Handling (RMS): 500 Watts
 - Power Handling (max): 2,000 Watts
 - Impedance: 4 ohms
 - Frequency Response: 50 to 3,500 Hz
 - Sensitivity: 96.6 dB 1W/1m
 - Voice Coil Diameter: 4"
 
THIELE-SMALL PARAMETERS
- Resonant Frequency (Fs): 55.4 Hz
 - DC Resistance (Re): 3.47 ohms
 - Voice Coil Inductance (Le): 0.19 mH
 - Mechanical Q (Qms): 7.09
 - Electromagnetic Q (Qes): 0.31
 - Total Q (Qts): 0.30
 - Compliance Equivalent Volume (Vas): 2.34 ft.³
 - Mechanical Compliance of Suspension (Cms): 0.17 mm/N
 - BL Product (BL): 14.09 Tm
 - Diaphragm Mass Inc. Airload (Mms): 47.90g
 - Maximum Linear Excursion (Xmax): 2.3 mm
 - Surface Area of Cone (Sd): 520 cm²
 
MATERIALS OF CONSTRUCTION
- Cone Material: Paper
 - Voice Coil Wire Material: Aluminum
 - Voice Coil Former: Kapton® / Polyimide
 - Basket / Frame Material: Cast Aluminum
 - Magnet Material: Ferrite