JL Audio 10TW3-D4 | 10 inch Shallow Subwoofer

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.jl-wrap { max-width: 100%; font-family: inherit; color: #d1d5db !important; } .jl-hero { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #16a34a !important; } .jl-eyebrow { color: #9ca3af !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; } .jl-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; } .jl-hero p { color: #d1d5db !important; font-size: 16px; margin: 0 0 18px 0; } .jl-badges { display: flex; flex-wrap: wrap; gap: 8px; } .jl-badge { background: #16a34a !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; } .jl-badge-alt { background: #1f2937 !important; color: #d1d5db !important; border: 1px solid #374151 !important; } .jl-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #16a34a !important; padding-left: 12px; } .jl-wrap p { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; } .jl-callout { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; } .jl-callout p { color: #d1d5db !important; margin: 0; } .jl-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; } .jl-stat { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 8px; padding: 16px; text-align: center; } .jl-stat .jl-statnum { color: #4ade80 !important; font-size: 22px; font-weight: 700; display: block; } .jl-stat .jl-statlabel { color: #9ca3af !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; } .jl-cta { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #16a34a !important; } .jl-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; } .jl-cta p { color: #d1d5db !important; } JL Audio TW3 Thin-Line Series JL Audio 10TW3-D4 10 Inch Subwoofer 400 watts RMS from 3.25 inches of mounting depth. The 10TW3-D4 uses JL Audio's patented Thin-Line technology to deliver 15.2mm of one-way Xmax, a Polymer/Mica composite cone, and a cast alloy frame in enclosures as small as 0.50 cubic feet. 400W RMS 3.25 in Depth 15.2mm Xmax Dual 4-Ohm Patented Thin-Line Technology Standard subwoofer designs require the motor structure to sit below the cone assembly, which is why conventional 10 inch drivers need 5 to 7 inches of mounting depth. JL Audio's patented Thin-Line design inverts this geometry using a concentric tube structure built into the injection-molded cone body. This structure supports the voice coil and a full annular spider while allowing the motor to be positioned further forward in the frame than conventional designs permit. The result is 3.25 inches of mounting depth with 15.2mm of one-way linear Xmax, an excursion capability JL Audio notes exceeds their standard-depth W3v3 series. The tab-ear mounting system accommodates a range of installation methods and maximizes usable cone area within the mounting footprint, which matters when enclosure dimensions are tight. 3.25 inMounting Depth 15.2mmXmax 400WRMS Power 0.50Cu Ft Optimum 15.2mm Xmax in 3.25 Inches Shallow-mount subwoofers typically trade excursion for depth. Less mounting depth means less space for the voice coil former, which reduces how far the cone can travel linearly before distortion. JL Audio's concentric tube design breaks that tradeoff. The 10TW3-D4's 15.2mm one-way Xmax is not just competitive for a shallow-mount driver; it exceeds the W3v3 series, JL Audio's standard-depth predecessor, in linear excursion capability. That is the engineering payoff of Thin-Line technology applied to a real product. The Polymer/Mica composite cone provides the stiffness-to-weight balance needed to take advantage of that excursion without introducing resonance modes at the higher frequencies where the TW3 operates when integrating with a front stage. Optimized for Small Sealed Enclosures JL Audio designed the TW3 series specifically for small enclosures. The optimum sealed volume is 0.50 cubic feet, which is compact enough to fit under most truck and SUV rear seats with enclosure heights as shallow as 4 to 4.5 inches total. The no-pole-vent motor design allows the driver to mount with minimal rear clearance, 0.25 inches is sufficient, which maximizes every available inch of internal enclosure volume. The Thin-Line motor has no center vent that could be blocked by a close rear wall. Ported Option JL Audio specifies a minimum of 0.75 cubic feet for ported enclosures, with 30 Hz as the recommended port tuning. Ported designs provide additional output in the 30-40 Hz range but require larger enclosures and add port tuning complexity. For most under-seat and shallow custom enclosure installations where the TW3 excels, sealed is the practical choice. For builds where the larger enclosure volume is available and maximum output matters, the ported option is fully supported. Fitment at a glance: mounting depth 3.25 inches, cutout 9.625 inches, overall major diameter 11.2 inches, weight 8.8 lbs. Optimum sealed 0.50 cu ft, ported minimum 0.75 cu ft. Tab-ear mounting. Minimum rear clearance 0.25 inches. Wire the dual 4-ohm voice coil parallel for 2 ohms or series for 8 ohms. D4 vs D8 Variants JL Audio offers the TW3 in both Dual 4-ohm (10TW3-D4) and Dual 8-ohm (10TW3-D8) configurations. Audio Intensity stocks the D4 as the most broadly compatible variant. Wired parallel, the D4 presents 2 ohms to the amplifier, which suits the majority of 1-ohm stable Class D monoblocks at full output. Wired series, it presents 8 ohms, which suits bridged 4-channel amplifiers and specific system impedance requirements. If your system requires the D8 configuration, contact Audio Intensity for availability. Built and Backed Designed and engineered by JL Audio in Miramar, Florida. The 10TW3-D4 carries the JL Audio manufacturer warranty through authorized dealers. Audio Intensity is an authorized JL Audio dealer. Every unit we sell is brand new current production with full warranty coverage. Authorized JL Audio Dealer Audio Intensity ships the JL Audio 10TW3-D4 fast from Tullahoma, Tennessee. Tell us your vehicle, your available depth and footprint, and your amplifier and we will help you confirm the fit and spec the right enclosure. .jl-enc { max-width: 100%; font-family: inherit; } .jl-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #16a34a !important; padding-left: 12px; } .jl-enc p { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; } .jl-enc-card { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 10px; overflow: hidden; margin: 20px 0; } .jl-enc-card-head { background: #16a34a !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; } .jl-enc-table { width: 100%; border-collapse: collapse; } .jl-enc-table th { background: #1f2937 !important; color: #9ca3af !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; } .jl-enc-table td { padding: 10px 12px; border-bottom: 1px solid #1f2937 !important; font-size: 14px; } .jl-enc-table td:first-child { color: #e5e7eb !important; font-weight: 600; } .jl-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; } .jl-enc-table tr:last-child td { border-bottom: none !important; } .jl-enc-table .jl-optimal td { background: #052e16 !important; } .jl-enc-table .jl-optimal td:first-child { color: #4ade80 !important; } .jl-char { font-size: 11px; color: #6b7280 !important; display: block; font-weight: 400; margin-top: 2px; } .jl-graph-wrap { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 10px; padding: 16px; margin: 16px 0; } .jl-graph-title { color: #9ca3af !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; } .jl-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; } .jl-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #6b7280 !important; } .jl-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; } .jl-enc-note { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; } .jl-enc-note p { color: #d1d5db !important; font-size: 14px; margin: 0; line-height: 1.6; } .jl-enc-link { color: #4ade80 !important; text-decoration: underline; } Sealed Enclosure Performance: Pre-Calculated Results Using JL Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for each box size. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator. These figures align with Pacific Stereo's published JL Audio enclosure data for the 0.50 cu ft alignment. The 10TW3-D4 is a moderate-Qts driver that produces a slightly elevated Qtc in JL Audio's recommended 0.50 cu ft sealed volume. This gives the driver a warm, impactful character that works well in the under-seat and shallow-build applications it is designed for. At 0.75 cu ft the response flattens toward a more controlled alignment while still maintaining the TW3's characteristic bass presence. The F3 sits in the upper 30s across the range, solid extension for a shallow-mount 10. Dual 4-Ohm | Qts 0.620 | Fs 32.3 Hz | Vas 19.82 L Box Volume Qtc Fc F3 0.50 cu ft JL Audio recommended optimum 0.960 50.0 Hz 40.1 Hz 0.625 cu ftMid-range balance 0.903 47.0 Hz 38.9 Hz 0.75 cu ftMaximum / flattest response 0.862 44.9 Hz 38.2 Hz Frequency Response: Sealed -12dB -9dB -6dB -3dB 0dB 3dB 20Hz 30Hz 50Hz 100Hz 200Hz 0.50 cu ft (Qtc 0.960) JL Recommended 0.625 cu ft (Qtc 0.903) 0.75 cu ft (Qtc 0.862) About the enclosure recommendation: JL Audio specifies 0.50 cu ft as the optimum sealed volume for the 10TW3-D4, which produces Qtc 0.960 and F3 40 Hz. This is a deliberate design choice for under-seat builds where the compact enclosure dimension is the priority. For a flatter sealed response, a larger volume approaching 1.49 cu ft achieves Butterworth alignment, but that volume largely defeats the purpose of a shallow-mount driver. For ported installations, JL Audio recommends a minimum of 0.75 cu ft tuned to 30 Hz. Run your own numbers in the Sealed Box Calculator. The Enclosures tab above lists JL Audio Stealthbox and other enclosure options for this driver. For a custom under-seat build, contact Audio Intensity with your vehicle and available dimensions. Show more