DC Audio (Soundlab) M3-8D4 Open Box Complete (Good, Used)

General Features:

• 8" Dual 4 ohm m3 8 Series Car Subwoofer
• Power Handling:
• Peak: 1200 watts
• RMS: 600 watts
• Recommended powr range: 400 - 600 watts RMS
• Extremely rigid non-pressed paper cone assembly
• Multilayered polymer wide roll foam surround
• Polypropylene dust cover with embossed DC logo
• Bolted down and spaced linear roll spiders
• Sewn flat heavy duty tinsel lead wire
• DVC 2" copper voice coil
• Rubber mounting gasket
• FEA analyzed and optimized motor assembly
• Fully CNC machined
• Top-mount depth: 5.75"
• Sensitivity: 78.7dB
• Authorized Internet Dealer
• 1-year Manufacturer's Warranty

m3-8 8" T/S Parameters:

• Electrical Q Value (Qes): .66
• Mechanical Q Value (Qms): 6.68
• Total Speaker Q Value (Qts): .601
• Free Air Resonance (Fs): 35.3
• Equivalent Compliance (Vas): 7.3 liters
• One-Way, Linear Excursion (Xmax): 18mm
• Efficiency (Ref SPL @ 1W): 78.7dB
• Effective Piston Area (Sd): 201.93 cm²
• DC Resistance (Re): 6.28
• Nominal Impedance (Znom): Dual 4 ohm
• Force Factor (Bl): 17.9
• Mechanical Compliance (Cms): .135 mm/N
• Mechanical Mass (Mms): 150.66g
• Voice Coil Inductance (Le): 5 mH
• Suggested Sealed Enclosure: Not Recommended
• Suggested Ported Enclose: .75 ft³

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