Memphis Audio MB824 8" 2 Ohm and 4 Ohm Subwoofer - 300 Watts RMS

Memphis Audio's MB824 is a revolutionary new subwoofer that can truely switch between 2 ohm and 4 ohm. Switching between 2 and 4-ohm impedance is extremely easy because of the provided color-coded bridges and the wiring diagram printed above the terminals, and having the added flexibility means these subwoofers will be a part of your setup for years to come. This 8" subwoofer features a 1.5" 4-layer aluminum voice coil, woven tinsel leads, folded surround, and pumps out 300 watts RMS. See below for more features and specifications.

Features:

• Selectable Impedance Design: 2 Ohm or 4 Ohm
• Reinforced Double Stitched Rubber Surround
• Polypropylene Dust Cap
• 1.5" 4-Layer Aluminum Multi-Coil Voice Coil
• DVVC Dual Layer Vented Voice Coil
• Folded Surround for Max Excursion with Max Surface Area
• Ultra-Light Aluminum Voice Coil Increased Sensitivity and Output
• Woven Tinsel Leads

Specifications:

• Impedance: 2 Ohm or 4 Ohm
• Voice Coil Diameter: 1.5"
• RMS Power: 300 Watts
• Max Power: 600 Watts
• Magnet Weight: 33 Ounces
• Magnet Diameter: 4.72"
• Mounting Depth: 3.74"
• Cutout Diameter: 7.13"
• Frame Outside Diameter: 8.31"
• Resonant Frequency (fs): 48 HZ
• Mechanical Q (2 Ohm/4 Ohm): 4.94/5.41
• Electrical Q (2 Ohm/4 Ohm): 0.79/0.7
• Total Q (2 Ohm/4 Ohm): 0.68/0.62
• Sensitivity (2 Ohm/4 Ohm): 83.5dB/84.1dB
• Xmax Linear: 0.27"
• Xmax Mechanical: 0.75"
• Displacement: 0.04 Cf.
• Air Volume of Suspension (2 Ohm/4 Ohm): 0.366/0.353
• Moving MAss: 76.43g
• Suspension Compliance (2 Ohm/4 Ohm): 0.144/0.138
• Effective Piston Area: 227 SqCM
• Motor Strength (2 Ohm/4 Ohm): 7.65/11.66

Enclosure Recommendations:

• Single Sub Sealed: 0.5 Cf. 
• Dual Subs Sealed: 1 Cf.
• Single Sub Vented: 1 Cf.
• Port Dimensions: 3" x 3" x 16.5" L
• Tuning Frequency: 40 Hz
• Dual Sub Vented: 1.5 Cf.
• Port Dimensions: 3.5" x 3.5" x 13" L
• Tuning Frequency: 40 Hz

This listing is for one (1) Memphis MB824 subwoofer.

Memphis Audio MB824 8" 2 Ohm and 4 Ohm Subwoofer - 300 Watts RMS

Memphis Audio's MB824 is a revolutionary new subwoofer that can truely switch between 2 ohm and 4 ohm. Switching between 2 and 4-ohm impedance is extremely easy because of the provided color-coded bridges and the wiring diagram printed above the terminals, and having the added flexibility means these subwoofers will be a part of your setup for years to come. This 8" subwoofer features a 1.5" 4-layer aluminum voice coil, woven tinsel leads, folded surround, and pumps out 300 watts RMS. See below for more features and specifications.

Features:

• Selectable Impedance Design: 2 Ohm or 4 Ohm
• Reinforced Double Stitched Rubber Surround
• Polypropylene Dust Cap
• 1.5" 4-Layer Aluminum Multi-Coil Voice Coil
• DVVC Dual Layer Vented Voice Coil
• Folded Surround for Max Excursion with Max Surface Area
• Ultra-Light Aluminum Voice Coil Increased Sensitivity and Output
• Woven Tinsel Leads

Specifications:

• Impedance: 2 Ohm or 4 Ohm
• Voice Coil Diameter: 1.5"
• RMS Power: 300 Watts
• Max Power: 600 Watts
• Magnet Weight: 33 Ounces
• Magnet Diameter: 4.72"
• Mounting Depth: 3.74"
• Cutout Diameter: 7.13"
• Frame Outside Diameter: 8.31"
• Resonant Frequency (fs): 48 HZ
• Mechanical Q (2 Ohm/4 Ohm): 4.94/5.41
• Electrical Q (2 Ohm/4 Ohm): 0.79/0.7
• Total Q (2 Ohm/4 Ohm): 0.68/0.62
• Sensitivity (2 Ohm/4 Ohm): 83.5dB/84.1dB
• Xmax Linear: 0.27"
• Xmax Mechanical: 0.75"
• Displacement: 0.04 Cf.
• Air Volume of Suspension (2 Ohm/4 Ohm): 0.366/0.353
• Moving MAss: 76.43g
• Suspension Compliance (2 Ohm/4 Ohm): 0.144/0.138
• Effective Piston Area: 227 SqCM
• Motor Strength (2 Ohm/4 Ohm): 7.65/11.66

Enclosure Recommendations:

• Single Sub Sealed: 0.5 Cf. 
• Dual Subs Sealed: 1 Cf.
• Single Sub Vented: 1 Cf.
• Port Dimensions: 3" x 3" x 16.5" L
• Tuning Frequency: 40 Hz
• Dual Sub Vented: 1.5 Cf.
• Port Dimensions: 3.5" x 3.5" x 13" L
• Tuning Frequency: 40 Hz

This listing is for one (1) Memphis MB824 subwoofer.