The m4 8 is an 8" long X-Max subwoofer. We have been asked for a 8 that smashs the lows and takes power.
This is a 8 that will give those that asked exactly what they are looking for. A tall roll stitched surround, oversized spiders, and a taller cast frame than the m3 . These newly designed parts allow for lower frequency reproduction and higher power handling.
The bolted down spaced spider design keeps it all linear. The m4 8 uses a gap cooled design to allow the 2.5" voice coil to thermally take more power than the m3
Key Features
Extremely rigid non-pressed paper cone assembly
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High Roll Stitched Multilayered reinforced polymer foam surround
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Rigid propylene dust cover with White DC logo
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Bolted down & spaced Linear roll spiders
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Sewn flat heavy duty tinsel lead wire
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Custom Cast aluminum black frame
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FEA analyzed and optimized motor assembly – Fully CNC machined
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Rubber mounting gasket and custom tooled motor boot.
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DVC 2.5” Copper voice coil.
T/S Parameters
M4 8" Subwoofer | D2 | D4 |
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Mounting Depth | 7.0" | 7.0" |
Mounting Hole Diameter | 7.5" | 7.5" |
Outside Driver Diameter | 8.75" | 8.75" |
VC Diameter | 2.5" | 2.5" |
Displacement | .15 ft³ | .15 ft³ |
Power Handling rms/peak | 800/1600 | 800/1600 |
Ohm Options | d2/d4 | d2/d4 |
Sd | 188.69 cm² | 188.69 cm² |
Vas | 1.728 Ltr | 1.790 Ltr L |
Cms | 34.184 uM/N | 35.405 uM/N |
Mms | 248.83g | 202.53 g |
Fs | 44.5 Hz | 47.4 Hz |
Bl | 20.72 N/A | 19.68 N/A |
Re | 4.0 Ohm | 8.0 Ohm |
Le | 0.00 mH | 0.00 mH |
Qms | 4.54 | 4.81 |
Qes | 0.614 | 0.700 |
Qts | 0.538 | 0.652 |
Xmax | 19mm | 19mm |
Ref SPL @1 watt | 78.4 db | 78.0 db |
Suggest Sealed Box | N/A ft³ | N/A ft³ |
Suggested Ported Box | 0.85 ft³ | 0.85 ft³ |
FAQ
We always reccomend a big 3 kit for every vehicle, regardless of the system. However, if you plan on running more than 1,500 watts we reccomend a good AGM battery underhood, and then from there more power will need more electrical upgrades depending on power.