SoundQubed 18" HDS 3.2 Series Subwoofer

Product Overview WELCOME TO THE 2024 LINEUP 18" HDS3.2 SUBWOOFER The Heavy Duty Street 3.2 Series 1200W Subwoofer improves on its predecessor in terms of build, sound quality, heat dispersion, and frequency response. The 10, 12, or 15-inch models are available with dual 2 or 4-ohm voice coil. The HDS3.2 series is a perfect option for elevating your daily-driver car audio system build to the next level. First, choose a sealed, ported, or band-pass enclosure . Once you decide on an enclosure option, pair your sub(s) with the appropriate S Series monoblock amp. From there, enjoy easy wiring in series or parallel thanks to the 10 AWG push terminals. Soon you’ll be on your way to a dramatically enhanced listening experience. As with any SoundQubed subwoofer, proper break-in is key to enjoying long life from your HDS3.2. Make sure you follow the steps to loosen up the suspension before pushing these subs to the limit. The HDS3.2 1200W Subwoofer The dual-magnet motor features a bumped T-yoke for greater travel and better heat resistance. Additionally, the vented, electroplated back plate gives heat a way out and decreases turbulence in the coil gap. The HDS3.2 series uses a 3-inch diameter, four-layer, copper dual voice coil with a conical back plate for long-distance travel. The HDS3.2 series feature cast aluminum frames. This upgrade provides better heat sinking and increased excursion over stamped-steel baskets. A softer three-piece spider system achieves enhanced performance and lower tuning. As a result, the HDS3.2 has an F(s) of 28.26 Hz compared to 35 Hz for the HDS3.1. An Extended Range of Motion (EROM) surround profile keeps your cone diameter as large as possible while allowing for long, controlled excursion. The EROM profile gives you more cone area, greater stiffness, and lower mass for more accurate coil signal response. The HDS3.2 has a non-pressed, fiber added cone for maximum rigidity and long life. Model HDS3.210 HDS3.212 HDS3.215 HDS3.218 RMS Power 1200 Watts 1200 Watts 1200 Watts 1200 Watts Peak Power 2400 Watts 2400 Watts 2400 Watts 2400 Watts Magnet Weight 160 ounce 160 ounce 160 ounce 160 ounce Coil Diameter 3" 3" 3" 3" Impedance D2/D4 D2/D4 D2/D4 D2/D4 R(e) 4.2 Ω 6.2Ω 5.284 Ω 0.95Ω F(s) 33.85 32.16 28.26 Hz 29.56Hz BL 25.07 25.4 22.66 14.54 Q(ms) 4.752 5.767 6.394 6.608 Q(es) 0.359 0.586 0.6628 0.702 Q(ts) 0.334 0.5326 0.6006 0.634 V(as) 13.21 L 29.23 L 83.34 L 100.09L M(ms) 247.2 grams 302.1 grams 362.6 grams 455.2 grams C(ms) 0.089 mm/N 0.081 0.087 mm/N N/a Sensitivity 1W/1m 83.43 84.09 86.42 89.2 Xmax 26 mm 28 mm 30 mm 30 mm Displacement 0.11 Ft³ 0.12 Ft³ .16 Ft³ .18 Ft³ Mounting Depth 6.75" 6.75 7.75" 9" Circle Cutout 9 3/8" 11 1/4" 13.875" 16.75" Outer Diameter W/Gasket 10.75" 12.75" 15.5" 18.5" Sealed Enclosure (Cu Ft): .5-1.0 FT³ .75-1.5 FT³ 1.75-2.75 FT³ 3.5-4.25 FT³ Ported Enclosure (Cu Ft): .75-1.25 FT³ 1-1.75 FT³ 3-6 FT³ 5-7 FT³ Warranty Information SoundQubed warrants all products to be free from defects in materials and workmanship for normal use and service for a period of time not to exceed 12 months for subwoofers, components, earbuds and coaxial and 12 months for amplifiers from the original date of retail purchase. Parts returned must be determined by SoundQubed to be defective prior to any warranty credit or replacement is issued. SoundQubed’s obligation under warranty shall be limited to repairing or replacing, at its discretion, any part proven defective. The customer must prepay transportation charges. Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. Warranties are non transferable. Warranty Exclusions Burnt or open coils Customer abuse or competition use and power in excess of rating Amplifiers used in competition or run below rated ohm loads or voltage Improper wiring, including size/gauge, paths, termination method, and series/parallel configuration SoundQubed shall not be liable for any special, direct, indirect, incidental or consequential damages that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor SoundQubed shall not be liable for any damages or injuries to persons or property resulting from improper installation or misuse of any part subject to this warranty THERE ARE NO OTHER WARRANTIES EXPRESSED OR IMPLIED EXTENDING BEYOND THOSE SET FORTH ABOVE Reviews (3 reviews) Write a Review 3 Reviews Hide Reviews Show Reviews 5 More then what I needed LOL Posted by Mike M on 03/24/2026 Shipping four 18’s is a shipping nightmare but you guys pulled it off with out a dent in a box. Only problem I had after making a 13cu sealed box for the caddy was the damn foam, holly crap that’s a lot of foam but it did its job so no complaints. I got 1200 going into each sub and with lots left on the table I still run no bass boost and they just nail it no matter what I play! The four 12’s prior never told me I had panel issues but these 18’s tell me even at 1/2 power that my trim panels in the car need to be secured LOL. These fkn subs are bananas!!! Cheers 5 18 hds3.2 Posted by David Thurman on 03/18/2026 So this is the second one I bought. Absolutely a beast. Can't wait for my box so I can run two of these. And for 200 delivered to my house. Thank you soundqubed. One happy customer. 5 This subwoofer gets down and dirty!!!! My first 18 inch subwoofer and soundqubed hds3.2 18 did not let me down.. very impressed. And a bonus. They sent a soundqubed widow decal. Subwoofer looks good. Sound good. Soundqubed for the win Posted by David Thurman on 02/03/2026 High quality car audio. Love it will be buying more.