About the Memphis Audio MB824
Solid design and flexibility
Solid design and flexibility
Memphis Audio's MB Series subwoofers are made to kick out deep, warm, old-school bass and give you maximum flexibility in wiring your system. Their solid construction lets them handle the high power you need for solid low end, and their selectable impedance lets them fit into just about any system.
Change your setup, change your settings
The MB824 8" subwoofer features spring terminals that let you use the included jumper wires to configure the sub for 2-ohm or 4-ohm impedance. This flexibility lets you get the most out of your sub amplifier, and makes it simple to connect multiple subs. Its traditional high-density paper cone—like the bass speakers on all those old records you love—combines with the sub's double-stitched folded rubber surround and steel basket to minimize distortion and give you fat, warm bass at levels up to 300 watts RMS, so you'll get plenty of punch. And since it's compatible with sealed or ported enclosures, you have even more flexibility to dial in the kind of bass response you want.
- 8" component subwoofer
- selectable 2- or 4-ohm impedance
- coated paper cone
- folded double-stitched rubber surround
- frequency response: 45-150 Hz
- power handling: 300 watts RMS (600 watts peak)
- sensitivity: 83.5 dB
- top-mount depth: 3-5/8"
- grille not included
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # MB824
What's in the box:
- One 8" Subwoofer
- Rubber trim ring/gasket (installed)
- One 4-ohm jumper wire (installed)
- Two 2-ohm jumper wires
- Specification sheet
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More details on the Memphis Audio MB824
Features & specs
|Ideal Sealed Box Volume (cubic feet)||0.5|
|Ideal Ported Box Volume (cubic feet)||1|
|Port diameter (inches)||3|
|Port length (inches)||16.5|
|Dual Voice Coil||No|
83.5 dB at 1 watt |
|Frequency Response||45 - 150 Hz|
|Max RMS Power Handling||300|
|Peak Power Handling (Watts)||600|
|Top Mount Depth (inches)||3 11/16|
|Bottom Mount Depth (inches)||N/A|
|Cutout Diameter or Length (inches)||7 1/16|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Terminals: One pair of spring-post input terminals offers easy connection of single banana plugs, dual banana plugs (standard 3/4" width), pin connectors, or bare wire up to 10 gauge.
Selectable Impedance: On the opposite side of the basket from the input terminals, there are four "shorting" spring terminals. Depending on how the included jumper wires are connected to these shorting terminals, the input terminals present either a 2Ω or 4Ω load. The power handling is the same for either setting; 300 watts RMS/600 watts peak.
Sealed Enclosures: Sealed enclosures provide the most control over a woofer and provide accurate sonic reproduction, making them suitable to all types of music. Memphis Audio recommends a sealed enclosure of 0.5 ft³.
Vented Enclosures: Vented (or ported) enclosures typically provide better overall efficiency than sealed so they are suitable for use with smaller amplifiers, giving you more bass output from a given amount of power. Memphis Audio recommends a ported enclosure of 1.0 ft³ with a 3" diameter x 16½" long port, yielding a tuning frequency of 40 Hz.
Thiele Small Parameters: Some specs change depending on the impedance:
|DC Resistance (Revc)||2Ω||4Ω|
|Resonant Frequency (fs)||48 Hz||48 Hz|
|Mechanical Q (Qms)||4.94||5.41|
|Electrical Q (Qes)||0.79||0.7|
|Total Q (Qts)||0.68||0.62|
|Sensitivity||83.5 dB||84.1 dB|
|Xmax||0.27" (6.86mm)||0.27" (6.86mm)|
|Vas||10.37 liters||10 liters|
|Moving Mass (Mms)||76.43 g||76.43 g|
|Suspension Compliance (Cms)||0.144 mmN||0.138 mmN|
|Effective Piston Area (Sd)||227 cm²||227 cm²|
|Motor Strength (Bl)||7.65 Tm||11.66 Tm|