DC Audio M4 8" Subwoofer
Key features
- Subwoofer size: 8.0 inches
- RMS power per subwoofer: 800 W
- Voice-coil options: D2, D4
- Mounting depth: 7 inches
- Mounting cutout diameter: 7.5 inches
- Voice-coil diameter: 2.5 inches
DC Audio M4 8" Subwoofer - Dual 2 Ohm is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Bring substantial bass to a demanding car audio system with the DC Audio M4 8" subwoofer. Its 800W RMS / 1600W peak power handling, gap-cooled 2.5" copper voice coil, and D2 or D4 impedance options are built for high-output installations.
A rigid paper cone, reinforced surround, and linear roll spiders support controlled movement when the music gets demanding.
Key Features & Benefits
- High power handling: 800W RMS / 1600W peak gives you substantial capacity for a high-power system.
- Gap-cooled voice coil: The 2.5" copper coil is designed for greater thermal headroom during demanding music.
- Rigid cone and reinforced surround: These components support stiffness and excursion control at high output.
- Stable moving assembly: Spaced linear roll spiders and sewn heavy-duty tinsel leads help maintain control under heavy-duty use.
- D2 and D4 options: Choose the impedance configuration that suits your amplifier load and wiring plan.
- Cast aluminum frame: The black frame and CNC-machined motor assembly provide a precisely built structure for linear motion.
Technical Specifications
| M4 8" Subwoofer | D2 | D4 |
|---|---|---|
| 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 |
The driver also features a high-roll stitched multilayered reinforced polymer foam surround, bolted-down spiders, a rubber mounting gasket, and a custom motor boot. Its motor assembly is FEA analyzed, optimized, and fully CNC machined.
Why Choose This Product?
The M4 8 pairs a compact driver footprint with 19 mm Xmax and a suggested 0.85 ft³ ported box. Its copper voice coil and gap-cooled design provide thermal headroom for demanding listening, while the cone, surround, and motor construction support controlled performance at high output.
Installation & Compatibility Notes
Allow for the 7.0" mounting depth, 7.5" mounting hole diameter, and 8.75" outside driver diameter when planning the installation. The driver has 0.15 ft³ displacement; the suggested ported box is 0.85 ft³.
Select the D2 or D4 configuration to match your amplifier’s supported load and planned wiring. Pair the subwoofer with a suitable amplifier and enclosure, and check the available mounting space before purchase.
Frequently Asked Questions
What are the M4 8’s power-handling ratings?
It is rated at 800W RMS / 1600W peak. Pair it with a suitable amplifier and enclosure for your system.
How do I choose between D2 and D4?
The D2 and D4 options have different impedance values. Match the selected configuration to your amplifier’s supported load and wiring plan.
What mounting space does this subwoofer require?
Plan for a 7.0" mounting depth, a 7.5" mounting hole diameter, and an 8.75" outside driver diameter.
What ported enclosure size is suggested?
The suggested ported box is 0.85 ft³ for both D2 and D4 configurations.
What is the subwoofer’s displacement?
Displacement is.15 ft³ for both configurations.
Explore More
Want to learn more about DC Audio? Explore the brands we sell at 12 Volt Outlet.
| M4 8" Subwoofer | D2 | D4 |
|---|---|---|
| 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 |
Recommended Monoblock Amplifiers
Power-matched options for one subwoofer or one complete loaded enclosure. We aim to include same-brand choices when their ratings qualify.
Loading amplifier suggestions…
Suggestions use 75–125% of the subwoofer’s RMS rating at the wiring load shown. Check wiring, enclosure needs, electrical capacity and installation space. Set gain and filters correctly to avoid overpowering the subwoofer. Buying more than one subwoofer changes the match.
