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Arc Audio
Arc Audio Arc Series 12" Subwoofer
SKU: ARC12 D2
$ 338.00
QUICK SPECS
- Power: 350W RMS | 700W Peak | Recommended Amp 5-700W
- Voice Coil: Dual 2-Ohm (D2) or Dual 4-Ohm (D4) | 89 dB Sensitivity
- Sealed Box: 0.90 to 1.25 cu ft | Optimal 1.07 cu ft | 18mm Xmax
- Fitment: Mounting Depth 6.0 in | Cutout 11-1/8 in | Sealed, Ported, IB
Arc Audio Arc Series 12" Subwoofer
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Arc Audio ARC Series Subwoofers
Arc Audio ARC Series 12 Inch Subwoofer
The top of the ARC Series lineup. 350 watts RMS, 89 dB sensitivity, 18mm Xmax, and the Arc Audio linear design philosophy applied to the format that moves the most air.
350W RMS
700W Peak
Dual 2 or Dual 4 Ohm
89 dB Sensitivity
Maximum Output, Same Arc Audio Accuracy
The Arc Audio ARC Series 12 inch subwoofer handles 350 watts RMS and 700 watts maximum across a recommended amplifier range of 5 to 700 watts. The 72.85 square inch cone area moves substantially more air than the 10 inch, the 18mm one-way Xmax gives it real excursion capability, and the 89 dB sensitivity means a quality amplifier in the 300 to 400 watt range produces authority that fills a full-size truck or SUV cabin.
The same linear design philosophy that runs through the ARC 8 and ARC 10 applies here. Consistent mechanical and electrical behavior across the full excursion range means the 12 is not just louder than the 10, it is louder with the same accuracy at all volume levels. Sealed, ported, and infinite baffle applications are all compatible with the driver's T/S parameters.
350WRMS Power
89 dBSensitivity
18mmXmax
1.07Cu Ft Optimal
Built to the ARC Series Standard
High-temperature black anodized voice coil for thermal stability, one-piece molded rubber surround that will not deteriorate with time and temperature, progressive flat layered spider with integrated tinsel leads to eliminate bare-lead failures, stamped steel basket. Every component choice is the same as the rest of the ARC family, just scaled to a 12 inch platform.
The rubber surround is worth calling out again at this size. A 12 inch subwoofer working hard in a sealed box generates real suspension loads. The rubber surround holds its compliance and damping characteristics through years of use in a way that foam cannot match, which means the driver's T/S parameters stay stable and the sound stays consistent over the life of the system.
Choose Your Voice Coil: D2 or D4
The D2 wires to 1 ohm or 4 ohms, the D4 wires to 2 ohms or 8 ohms. Both share 89 dB sensitivity and 18mm Xmax. The T/S parameters differ slightly between variants, producing marginally different sealed box alignments, with the D2 running a bit tighter at the same volume. Pick the coil that puts your amplifier in its comfort zone. The enclosure performance section below shows the full picture for both.
Fitment at a glance: mounting depth 6.0 inches, cutout 11-1/8 inches. Recommended sealed volume is 0.90 to 1.25 cubic feet with 1.07 as the optimal. Also compatible with ported and infinite baffle designs.
When the 12 Is the Right Call
The ARC 12 earns its enclosure volume and amplifier budget in large vehicles where a 10 leaves bass thin, in systems where maximum output at moderate amplifier power is the goal, and anywhere 89 dB sensitivity and 18mm of Xmax can be used. For a daily driver in a compact car with limited trunk space, the ARC 10 is the smarter choice. For a crew cab truck, full-size SUV, or a build where bass authority matters most, the 12 is where the ARC Series performance tops out.
Built and Backed
Designed and engineered in the USA. Every Arc Audio ARC Series 12 sold by Audio Intensity is brand new and carries the Arc Audio 1-year warranty through authorized dealers.
Authorized Arc Audio Dealer
Audio Intensity ships the Arc Audio ARC Series 12 fast from Tullahoma, Tennessee, with real installer support before and after the sale. Tell us your amplifier, your vehicle, and your goals and we will help you match the right enclosure and voice coil to your setup.
Sealed Enclosure Performance: Pre-Calculated Results
Using Arc Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), F3 rolloff, and frequency response for each box size. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.
The ARC Series 12 runs in the slightly warm to punchy sealed zone across all three volumes. The D2 in the 1.07 cu ft optimal lands at Qtc 0.846, a full-sounding, impactful alignment with F3 below 38 Hz. The D4 runs a bit higher. Both deliver genuine deep bass extension from a moderate sealed box.
D2 — Dual 2 Ohm | Qts 0.455 | Fs 23.5 Hz | Vas 74.43 L
| Box Volume | Qtc | Fc | F3 |
|---|---|---|---|
| 0.90 cu ftMinimum / tightest | 0.901 | 46.5 Hz | 38.6 Hz |
| 1.07 cu ft ★Optimal (Arc recommended) | 0.846 | 43.7 Hz | 37.7 Hz |
| 1.25 cu ftMaximum / most relaxed | 0.801 | 41.4 Hz | 37.1 Hz |
D4 — Dual 4 Ohm | Qts 0.469 | Fs 23.2 Hz | Vas 76.28 L
| Box Volume | Qtc | Fc | F3 |
|---|---|---|---|
| 0.90 cu ftMinimum / tightest | 0.937 | 46.4 Hz | 37.6 Hz |
| 1.07 cu ft ★Optimal (Arc recommended) | 0.880 | 43.5 Hz | 36.6 Hz |
| 1.25 cu ftMaximum / most relaxed | 0.833 | 41.2 Hz | 35.9 Hz |
D2 Frequency Response — Sealed
0.90 cu ft (Qtc 0.901)
1.07 cu ft (Qtc 0.846) ★
1.25 cu ft (Qtc 0.801)
D4 Frequency Response — Sealed
0.90 cu ft (Qtc 0.937)
1.07 cu ft (Qtc 0.880) ★
1.25 cu ft (Qtc 0.833)
What the numbers mean: Qtc near 0.707 is textbook Butterworth (flattest sealed response). The ARC Series 12 runs from 0.80 to 0.94 across the recommended volume range, landing in the slightly warm to impactful zone. That means a gentle midbass lift that adds fullness and presence without becoming boomy, combined with F3 in the 36 to 39 Hz range, genuine deep bass extension from a sealed 12. Vehicle cabin gain below 80 Hz adds another 6 to 12 dB in practice, extending perceived bass well below F3. The D2 at any volume runs slightly lower Qtc than the D4, producing a marginally tighter character at the same box size. Run your own numbers in the Sealed Box Calculator.
Ready to build? The Enclosures tab above lists the Proline X sealed and ported enclosures we build specifically for 12 inch drivers, CNC-cut in Tullahoma, Tennessee.
| Arc Audio ARC Series 12 Inch Subwoofer Specifications | ||
|---|---|---|
| Specification | D2 Version | D4 Version |
| Power and Configuration | ||
| RMS Power Handling | 350 Watts | |
| Peak Power Handling | 700 Watts | |
| Recommended Amplifier Power | 5 to 700 Watts | |
| Voice Coil Configuration | Dual 2-Ohm (D2) | Dual 4-Ohm (D4) |
| Wiring Options | 1 Ohm or 4 Ohm | 2 Ohm or 8 Ohm |
| Thiele-Small Parameters | ||
| Resonant Frequency (Fs) | 23.5 Hz | 23.2 Hz |
| Total Q (Qts) | 0.455 | 0.469 |
| Electrical Q (Qes) | 0.407 | 0.469 |
| Mechanical Q (Qms) | 3.830 | 2.762 |
| Equivalent Volume (Vas) | 74.43 L | 76.28 L |
| DC Resistance Re (single coil) | 1.97 Ohm | 1.97 Ohm |
| Sensitivity (1W / 1m) | 89 dB | |
| Xmax (One-Way Linear) | 18 mm | |
| Cone Area (Sd) | 72.85 sq in | |
| Recommended Enclosures | ||
| Sealed Volume | 0.90 to 1.25 cu ft (optimal 1.07) | |
| Ported Enclosure | Compatible | |
| Infinite Baffle | Compatible | |
| Construction | ||
| Voice Coil | High-Temperature Black Anodized Aluminum | |
| Cone | Proprietary Composite, Linear Design | |
| Surround | One-Piece Molded Rubber | |
| Spider | Progressive Flat Layered with Integrated Tinsel Leads | |
| Basket | Stamped Steel | |
| Mounting and Physical | ||
| Mounting Depth | 6.0 in | |
| Cutout Diameter | 11-1/8 in | |
| Engineering Origin | Designed and Engineered in the USA | |
| Warranty | 1 Year (Authorized Dealers) | |
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