DS18 SRW12.4 12″ Shallow-Mount Subwoofer, Single 4-Ohm
Slim 12-inch single 4-ohm woofer rated 220 watts RMS
$149.99
Overview
The DS18 SRW12.4 is a 12-inch shallow-mount subwoofer with a single 4-ohm voice coil, sized for installs where depth is limited. It is rated 220 watts RMS and 440 watts max with 88 dB sensitivity, so it suits moderate-power amplifiers. Mounting depth is 3.54 inches, and DS18’s manual lays out a sealed box with 1.00 cubic foot of net internal volume. An enclosure and amplifier are sold separately.
Product details
Low-profile 12-inch woofer
The SRW12.4 is a slim 12-inch woofer for behind-seat boxes, under-seat locations, and other tight spaces. It needs 3.54 inches of mounting depth and a 10.98-inch front-mount cutout. Overall diameter is 12.44 inches and overall depth is 4.13 inches.
Power and response
DS18 rates the woofer at 220 watts RMS and 440 watts max on a single 4-ohm voice coil. Sensitivity is 88 dB (1 W/1 m), and the listed frequency response is 25 Hz to 250 Hz, with an 80 Hz low-pass crossover recommended. The single coil keeps wiring simple: one woofer presents a 4-ohm load.
Construction
A 2-inch voice coil on an aluminum former drives a paper cone with a paper dust cap and rubber surround. The steel basket has a glossy red finish, and the ferrite magnet weighs 45 oz. Woofer displacement is 2.12 L.
Enclosure planning
The owner’s manual includes a sealed single-woofer box design with 1.00 cubic foot of net internal volume. Listed parameters include Fs of 53 Hz, Qts of 0.889, and Vas of 26.6 L. Measure your space and confirm the mounting depth before you build.
Before you order
Check how much depth you have behind the mounting baffle, including any grille or panel that will cover the woofer, and compare it with the 3.54-inch mounting depth. Then match the amplifier to the single 4-ohm load and the 220-watt RMS rating, and set the low-pass filter near 80 Hz as a starting point.
Key features
- 12-inch shallow-mount subwoofer with 3.54-inch mounting depth
- 220 watts RMS and 440 watts max power handling
- Single 4-ohm voice coil for simple wiring
- 88 dB sensitivity for moderate-power amplifiers
- 2-inch voice coil on an aluminum former
- Paper cone and rubber surround on a red steel basket
- 25 Hz to 250 Hz response; 80 Hz low-pass crossover recommended
Specifications
| Weight | 8.5 lbs |
|---|---|
| Dimensions | 12.87 × 12.87 × 4.75 in |
| Size | 12 inch |
| Brand | DS18 |
| Model | SRW12.4 |
| SKU | SRW124 |
| UPC | 810005182119 |
| Product type | Shallow-mount subwoofer |
| Nominal diameter | 12" |
| Voice coil configuration | Single 4-ohm |
| RMS power handling | 220 W |
| Max power handling | 440 W |
| Sensitivity (1 W/1 m) | 88 dB |
| Frequency response | 25 Hz to 250 Hz |
| Recommended low-pass crossover | 80 Hz |
| Voice coil diameter | 2" (50.8 mm) |
| Voice coil former | Aluminum |
| Cone material | Paper |
| Dust cap | Paper |
| Surround | Rubber |
| Basket | Steel, glossy red finish |
| Magnet | Ferrite, 45 oz |
| Displacement volume | 2.12 L (0.074 cu. ft.) |
| Fs | 53 Hz |
| Qts | 0.889 |
| Vas | 26.6 L (0.93 cu. ft.) |
| Sealed box net volume (manual design) | 1.00 cu. ft. |
| Overall diameter | 12.44" (316 mm) |
| Overall depth | 4.13" (105 mm) |
| Front-mount cutout | 10.98" (279 mm) |
| Mounting depth | 3.54" (90 mm) |
Important notes
- Enclosure, amplifier, and wiring are sold separately.
- Single 4-ohm load: confirm your amplifier is rated for it.
- Confirm 3.54-inch mounting depth and the 10.98-inch cutout before building or buying a box.
- DS18's manual sealed-box design uses 1.00 cubic foot of net internal volume.
