DC Audio XL18 m4 D1

General Features:

• 18" Dual 1 ohm XL Series m4.1 Version Car Subwoofer
• Power Handling:
• Peak: 4400 watts
• RMS: 2200 watts
• Recommended power range: 1600 - 2200 watts RMS
• Extremely rigid non-pressed paper cone assembly
• Multilayered polymer wide roll foam surround
• Polypropylene dust cover with embossed DC logo
• Quad 8" OD semi cup progressive roll spiders
• Dual extra heavy duty interweaved tinsel lead wire
• Rubber mounting gasket
• Chrome spring loaded push terminals
• FEA analyzed and optimized motor assembly
• Fully CNC machined
• Top-mount depth: 11.25"
• Cutout diameter: 16.75"
• Sensitivity: 91.3dB
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty

m4 XL 18" T/S Parameters:

• Electrical Q Value (Qes): .548
• Mechanical Q Value (Qms): 17.6
• Total Speaker Q Value (Qts): .532
• Free Air Resonance (Fs): 32.3
• Equivalent Compliance (Vas): 144.36 liters
• One-Way, Linear Excursion (Xmax): 26mm
• Efficiency (Ref SPL @ 1W): 91.3dB
• Effective Piston Area (Sd): 1159 cm²
• DC Resistance (Re): 3.98
• Nominal Impedance (Znom): Dual 1 ohm
• Force Factor (Bl): 22.73
• Mechanical Compliance (Cms): .07 mm/N
• Mechanical Mass (Mms): 346.7g
• Voice Coil Inductance (Le): 5.2 mH
• Suggested Sealed Enclosure: Not Recommended
• Suggested Ported Enclose: 5.5 ft³

For more information on the Thiele and Small Parameters, visit our T/S Parameters Article