DC Audio RS 18" Subwoofer
Key features
- Subwoofer size: 18.0 inches
- RMS power per subwoofer: 1800 W
- Voice-coil options: D0.7, D1, D1.4, D2, D4
- Motor diameter: 220 mm
- Shorting ring: 5 mm aluminum
- Voice coil: four-layer high-temperature round wire
DC Audio RS 18" Subwoofer - Dual 0.7 Ohm is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The DC Audio RS 18" subwoofer brings high-output bass to a car audio system built around a large subwoofer enclosure. Its RSm2 design pairs radial forced-air cooling with an 8-layer flat-wire voice coil and dual 220mm Y35 magnets.
The rigid paper cone assembly and progressive-roll spiders are designed to help control cone movement during large excursions. Use the 18-inch driver in an enclosure sized to accommodate its mounting dimensions and the recommended air volume.
Key Features & Benefits
- Radial cooling: Venting around the solid pole directs motor air across the coil during demanding playback.
- Rigid cone assembly: The non-pressed paper cone is designed to resist unwanted flex at large excursions.
- Progressive-roll spiders: Three stiff 8-inch-OD semi-cup spiders support controlled linear travel.
- Heavy-duty leads: Dual interweaved tinsel lead wires support reliable connections during high-power use.
- Robust motor: Dual 220mm Y35 magnets and a fully CNC-machined, FEA-optimized assembly form the subwoofer motor.
- Installation details: A cast aluminum frame, rubber mounting gasket, and chrome spring-loaded push terminals serve practical mounting and wiring needs.
Technical Specifications
The source specifications include comparison data for the 10", 12", 15", and 18" RS subwoofers. Values are retained in their stated size columns.
| RS-Subwoofer | 10" | 12" |
|---|---|---|
| Mounting Depth | 6.25" | 7" |
| Mounting Hole Diameter | 9.35" | 11" |
| Outside Driver Diameter | 11" | 12.5" |
| VC Diameter | 3.0" | 3.0" |
| Displacement | .16 ft³ | .17 ft³ |
| Power Handling rms/peak | 1800/3600 | 1800/3600 |
| Ohm Options | d1/d2 | d1/d2 |
| Sd | 324.29 cm² | 494.81 cm² |
| Vas | 5.39 L | 00.00 L |
| Cms | 0.036Mm/n | 0.000 Mm/n |
| Mms | 405.41 g | 000.00 g |
| Fs | 41.59 Hz | 0.00 Hz |
| Bl | 30.72 N/A | 00.00 N/A |
| Re | 3.83 Ohm | 0.00 Ohm |
| Le | 4.54 mH | 0.0 mH |
| Qms | 8.19 | 00.00 |
| Qes | 0.43 | 0.00 |
| Qts | 0.408 | 0.000 |
| Xmax | 24mm | 24mm |
| Ref SPL @1 watt | 81.3 db | 00.0db |
| Suggest Sealed Box | .75 ft³ | 1.0 ft³ |
| Suggested Ported Box | 1.0 ft³ | 1.5 ft³ |
| RS-Subwoofer | 15" | 18" |
|---|---|---|
| Mounting Depth | 8.25" | 9.25" |
| Mounting Hole Diameter | 14.0" | 16.75" |
| Outside Driver Diameter | 15.7" | 18.5" |
| VC Diameter | 3.0" | 3.0" |
| Displacement | .22 ft³ | .24 ft³ |
| Power Handling rms/peak | 1800/3600 | 1800/3600 |
| Ohm Options | d1/d2 | d1/d2 |
| Sd | 791 cm² | 1159 cm² |
| Vas | 00.00 L | 000.00 L |
| Cms | 0.00 Mm/n | 0.00 Mm/n |
| Mms | 000.00 g | 000.00 g |
| Fs | 00.0 Hz | 00.0 Hz |
| Bl | 00.00 N/A | 00.00 N/A |
| Re | 3.98 Ohm | 3.98 Ohm |
| Le | 0.00 mH | 0.00 mH |
| Qms | 00.00 | 00.00 |
| Qes | 0.000 | 0.000 |
| Qts | 0.00 | 0.000 |
| Xmax | 24mm | 24mm |
| Ref SPL @1 watt | 00.0 db | 00.0 db |
| Suggest Sealed Box | 2.0 ft³ | 3.5 ft³ |
| Suggested Ported Box | 3.0 ft³ | 5.5 ft³ |
Additional 18" model details: Dual 1.0 or 2.0 ohm 3" Hi-temp Voice Coil; 8-layer flat-wire voice coil; dual 220mm Y35 Extream Grade magnets; 0.24 ft³ displacement; 1800/3600 power handling rms/peak; Sd 1159 cm²; Re 3.98 Ohm; Xmax 24 mm; suggested sealed box 3.5 ft³; suggested ported box 5.5 ft³.
Why Choose This Product?
This RS 18" is built for a high-power car audio setup where substantial cone area, excursion, and cooling are key considerations. Its forced-cooling design and heavy-duty motor components address the demands of sustained bass playback, while the supplied enclosure recommendations offer starting volumes for sealed or ported designs.
The polypropylene dust cover helps keep dust out of the motor area. A rubber mounting gasket sits between the driver and mounting surface, and the cast aluminum frame is specified for no-invert mounting.
Installation & Compatibility Notes
Allow for a 9.25" mounting depth, a 16.75" mounting hole diameter, and an 18.5" outside driver diameter. The listed voice coil diameter is 3.0". Check available enclosure space and mounting clearance before planning the installation.
The source lists dual 1.0 or 2.0 ohm voice coil options and an Re value of 3.98 Ohm. Match the selected configuration to the amplifier and system design. Suggested enclosure volumes are 3.5 ft³ sealed or 5.5 ft³ ported.
Frequently Asked Questions
What enclosure volume is suggested for the RS 18"?
The listed recommendations are 3.5 ft³ for a sealed box and 5.5 ft³ for a ported box.
What mounting space does this subwoofer require?
Plan for 9.25" mounting depth, a 16.75" mounting hole diameter, and an 18.5" outside driver diameter.
What voice coil options are listed?
The product details list dual 1.0 or 2.0 ohm, 3" high-temperature voice coil options. Match the selected option to your amplifier and system configuration.
What are the listed power handling and excursion figures?
The specifications state 1800/3600 power handling rms/peak and 24 mm Xmax.
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