TW1 12-inch Subwoofer (300 W, 2 Ω) Built on JL Audio's patented thin-line subwoofer technology, the 12TW1 delivers a powerful combination of shallow mounting depth and excursion capability, while operating in insanely small enclosures (0.65 cu.ft. / 18.4 liters). This, combined with a special cast alloy frame design, makes the 12TW1 capable of operating in extremely tight spaces. These include under-seat installations in trucks, 2-seat sports cars and many other creative applications requiring a compact, low profile subwoofer design. JL Audio's patented thin-line woofer technology compresses the architecture of the 12TW1 using a "concentric tube" structure built into the injection-molded cone body. This structure supports the voice coil and a full annular spider, while permitting the placement of a large motor structure further forward in the speaker than with conventional designs. The 12TW1 also features a clever frame design that minimizes the frontal clearance required for the excursion of the driver. This is accomplished by recessing the suspension attachment surface, so that most of the forward excursion occurs within the frame's dimensions. Thanks to this feature, the 12TW1 requires only 0.87 inches (22 mm) of frontal clearance, even with its grille installed. This allows for more efficient use of space and increased enclosure volume within a given overall depth. Even though the 12TW1 is optimized for an enclosure much smaller than any other JL Audio twelve-inch Subwoofer, it never sounds like a big woofer struggling in a tiny box...instead, it delivers all the rich, deep, controlled bass you have come to expect from a JL Audio subwoofer system. Very shallow mounting depth (4.62 in / 117 mm) No pole vent: permits mounting close to rear wall of enclosure Extremely small sealed enclosure volume requirements Long linear excursion capability (0.40 in / 10 mm, one-way) DMA-optimized motor design Patented "concentric tube" architecture Patented "floating cone attach method" technology Cast alloy frame with flat edges for tight driver grouping Injection molded, mica-filled polypropylene cone Rubber surround Steel mesh grille included with each driver Precision-built in USA at JL Audio’s Miramar, Florida factory with global components General Specifications Continuous Power Handling (RMS) 300 W Recommended Amplifier Power (RMS) 75 - 300 W Nominal Impedance (Znom) 2 Ω Physical Specifications Nominal Diameter 12.0 in / 300 mm Overall Diameter (A) 12.375 in / 314 mm Mounting Hole Diameter (B) 11.0625 in / 281 mm Bolt Hole Circle Diameter (C) 11.7 in / 297 mm Motor Outer Diameter (D) 5.71 in / 145 mm Mounting Depth (E) 4.62 in / 117 mm Front Grille Protrusion (F) 0.87 in / 22 mm Driver Displacement 0.072 cu ft / 2.04 L Net Weight 16.5 lb / 7.5 kg Parameters Free Air Resonance (Fs) 35.06 Hz Electrical “Q” (Qes) 0.61 Mechanical “Q” (Qms) 10.662 Total Speaker “Q” (Qts) 0.577 Equivalent Compliance (Vas) 1.008 cu ft / 28.54 L One-Way Linear Excursion (Xmax)* 0.40 in / 10.0 mm Reference Efficiency (no) Efficiency (1 W / 1 m)** 85.07 dB SPL Effective Piston Area (Sd) 67.608 sq in / 0.0436 sq m DC Resistance (Re) 2.430 Ω * Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.** Efficiency (1 W / 1 m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”. Sealed Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 0.65 cu ft / 18.41 L External Width (W) 26.50 in / 673 mm External Height (H) 14 in / 356 mm External Depth (D) 5.50 in / 140 mm F3 45.83 Hz Fc 55.99 Hz Qtc 0.92 Enclosure Notes* The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account.* When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support.* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.* All specifications are subject to change without notice. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van. Ported Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 1.125 cu ft / 31.86 L External Width (W) 31.75 in / 806 mm External Height (H) 16 in / 406 mm External Depth (D) 7 in / 178 mm Internal Slot Port Width (SW) 5.50 in / 140 mm Internal Slot Port Height (SH) 2.25 in / 57 mm Internal Slot Port Length (SL) 22.625 in / 575 mm Port Extension Length (EL) 20.75 in / 527 mm Tuning Frequency (Fb) 34.0 Hz F3 31.52 Hz Enclosure Notes* The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account.* When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support.* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance.* All specifications are subject to change without notice. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

W6v3 10-inch Subwoofer (600 W, dual 4 Ω voice coils) If you are seeking to reproduce the highest quality sub-bass in a very compact enclosure application, the 10W6v3 is the ultimate choice. This advanced Subwoofer offers several technologies shared with the flagship W7AE subwoofers to provide powerful advantages in motor linearity and suspension behavior. These combine with a very efficient cooling circuit to deliver reduced distortion and outstanding dynamic balance. The 10W6v3 is best used with amplifier power in the 200W - 600W range and is optimized to operate in a sealed enclosure with only 0.55 cu. ft. (15.6 l) of air space, or a 0.75 cu. ft. (21.2 l) ported enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab. Greater excursion capability and higher power handling distinguish it from our 10W3v3 10-inch Subwoofer, allowing for higher output. Dual 4 Ω voice coils permit deploying the W6v3 as a 2 Ω or 8 Ω driver. General Specifications Continuous Power Handling (RMS) 600 W Recommended Amplifier Power (RMS) 200 - 600 W Nominal Impedance (Znom) Dual 4 Ω Physical Specifications Nominal Diameter 10.0 in / 250 mm Overall Diameter (A) 10.5 in / 267 mm Mounting Hole Diameter (B) 9.02 in / 229 mm Bolt Hole Circle Diameter (C) 9.86 in / 250 mm Motor Outer Diameter (D) 6.76 in / 172 mm Mounting Depth (E) 6.89 in / 175 mm Required Pole Vent Clearance 0.50 in / 13 mm Driver Displacement 0.078 cu ft / 2.1 L Net Weight 20 lb / 9.1 kg Parameters Free Air Resonance (Fs) 30.12 Hz Electrical “Q” (Qes) 0.543 Mechanical “Q” (Qms) 9.228 Total Speaker “Q” (Qts) 0.513 Equivalent Compliance (Vas) 0.821 cu ft / 23.25 L One-Way Linear Excursion (Xmax)* 0.75 in / 19 mm Reference Efficiency (no) 0.11% Efficiency (1 W / 1 m)** 82.7 dB SPL Effective Piston Area (Sd) 49.303 sq in / 0.0318 sq m DC Resistance (Re)*** 6.452 Ω * Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.** For parallel-wired voice coils, divide "Re" by 4. All other specifications remain the same.*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same. Sealed Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 0.55 cu ft / 15.57 L External Width (W) 12.5 in / 318 mm External Height (H) 12.5 in / 318 mm External Depth (D) 10.5 in / 267 mm F3 42.27 Hz Fc 47.55 Hz Qtc 0.8099 Download detailed sealed enclosure information Enclosure Notes* The W6v3’s employ a pole vent to remove heat and pressure from the inside of the speaker. This vent is located around the JL Audio badge at the rear of the speaker. A minimum distance of 0.5 in (13 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent.* The enclosure recommendations listed are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed are net internal volumes! Box volume displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions listed have already taken this into account.* When using two subwoofers in a common enclosure simply double the required volume and, in the case of a ported enclosure, use two times the recommended port(s).* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and amplifiers. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van. Ported Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 0.75 cu ft / 21.2 L External Width (W) 21.5 in / 546 mm External Height (H) 12.375 in / 314 mm External Depth (D) 11.125 in / 282 mm Internal Slot Port Width (SW) 1.375 in / 35 mm Internal Slot Port Height (SH) 10.875 in / 275 mm Internal Slot Port Length (SL) 30.40 in / 772 mm Port Extension Length (EL) 16.5 in / 419 mm Tuning Frequency (Fb) 39 Hz F3 33 Hz Download detailed ported enclosure information Enclosure Notes* The W6v3’s employ a pole vent to remove heat and pressure from the inside of the speaker. A minimum distance of 0.5 in (13 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent.* The enclosure recommendations listed are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed are net internal volumes! Box volume displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions listed have already taken this into account.* When using two subwoofers in a common enclosure simply double the required volume and, in the case of a ported enclosure, use two times the recommended port(s).* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and amplifiers. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

W6v3 12-inch Subwoofer (600 W, dual 4 Ω voice coils)   If you are seeking intensely powerful sub-bass that compromises nothing in terms of sound quality, the 12W6v3 is your ultimate ally. This highly advanced Subwoofer offers several technologies shared with the flagship W7AE subwoofers to provide powerful advantages in motor linearity and suspension behavior. These combine with a very efficient cooling circuit to deliver reduced distortion and outstanding dynamic balance. The 12W6v3 is best used with amplifier power in the 200W - 600W range and is optimized to operate in a sealed enclosure with only 1.0 cu. ft. (28.3 l) of air space, or a 1.3 cu. ft (36.8 l) ported enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab. Greater excursion capability and higher power handling distinguish it from our 12W3v3 12-inch Subwoofer, allowing for higher output. Dual 4 Ω voice coils permit deploying the W6v3 as a 2 Ω or 8 Ω driver. General Specifications Continuous Power Handling (RMS) 600 W Recommended Amplifier Power (RMS) 200 - 600 W Nominal Impedance (Znom) Dual 4 Ω Physical Specifications Nominal Diameter 12.0 in / 300 mm Overall Diameter (A) 12.5 in / 318 mm Mounting Hole Diameter (B) 11.02 in / 280 mm Bolt Hole Circle Diameter (C) 11.86 in / 301 mm Motor Outer Diameter (D) 7.0 in / 178 mm Mounting Depth (E) 7.52 in / 191 mm Required Pole Vent Clearance 0.50 in / 13 mm Driver Displacement 0.105 cu ft / 2.97 L Net Weight 25.6 lb / 11.6 kg Parameters Free Air Resonance (Fs) 26.919 Hz Electrical “Q” (Qes) 0.487 Mechanical “Q” (Qms) 9.365 Total Speaker “Q” (Qts) 0.463 Equivalent Compliance (Vas) 1.920 cu ft / 54.37 L One-Way Linear Excursion (Xmax)* 0.75 in / 19 mm Reference Efficiency (no) 0.11% Efficiency (1 W / 1 m)** 85.4 dB SPL Effective Piston Area (Sd) 75.338 sq in / 0.0486 sq m DC Resistance (Re)*** 6.493 Ω * Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.** For parallel-wired voice coils, divide "Re" by 4. All other specifications remain the same.*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same. Sealed Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 1.0 cu ft / 28.3 L External Width (W) 15 in / 381 mm External Height (H) 15 in / 381 mm External Depth (D) 12 in / 305 mm F3 41.62 Hz Fc 45.99 Hz Qtc 0.7912 Download detailed sealed enclosure information Enclosure Notes* The W6v3’s employ a pole vent to remove heat and pressure from the inside of the speaker. This vent is located around the JL Audio badge at the rear of the speaker. A minimum distance of 0.5 in (13 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent.* The enclosure recommendations listed are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed are net internal volumes! Box volume displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions listed have already taken this into account.* When using two subwoofers in a common enclosure simply double the required volume and, in the case of a ported enclosure, use two times the recommended port(s).* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and amplifiers. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van. Ported Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 0.75 in / 19 mm Volume (net int.) 1.3 cu ft / 36.8 L External Width (W) 27 in / 686 mm External Height (H) 14 in / 356 mm External Depth (D) 12.5 in / 318 mm Internal Slot Port Width (SW) 1.75 in / 44 mm Internal Slot Port Height (SH) 12.5 in / 318 mm Internal Slot Port Length (SL) 37.125 in / 943 mm Port Extension Length (EL) 21.250 in / 540 mm Tuning Frequency (Fb) 33 Hz F3 31 Hz Download detailed ported enclosure information Enclosure Notes* The W6v3’s employ a pole vent to remove heat and pressure from the inside of the speaker. A minimum distance of 0.5 in (13 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent.* The enclosure recommendations listed are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure.* All enclosure volumes listed are net internal volumes! Box volume displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions listed have already taken this into account.* When using two subwoofers in a common enclosure simply double the required volume and, in the case of a ported enclosure, use two times the recommended port(s).* We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and amplifiers. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. Safety NoticeProlonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

10th Anniversary Edition - W7 13.5-inch Subwoofer (1500 W, Dual 1.5 Ω voice coils) Words like "extreme," "reference" and "ultimate" get thrown around quite a bit in the Subwoofer world, but rare is the product that can honestly lay claim to them. The 13W7AE does. Taking the W7 design formula to its highest level, the 13W7AE offers a staggering linear excursion envelope that exceeds 1.25 inches (32 mm) one-way, along with a suspension capable of over 4-inches of peak-to-peak excursion. Combine that with a piston diameter that is 28% larger than the 12W7AE's, and you have a serious high-performance driver for the most demanding applications. With a 13W7AE, limits simply vanish and amazing sub-bass happens... on all fronts, at any level. Our most potent Subwoofer is best used with amplifier power in the 500W - 1500W range and is optimized to operate in a 1.875 cu. ft. (53.1 l) sealed enclosure, or a 2.375 cu. ft. (67.3 l) ported enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab. W7AE (Anniversary Edition) Subwoofers celebrate the 10th Anniversary of the launch of the W7 subwoofers. Functionally, they are identical to the original W7's, but they are distinguished by the following cosmetic differences: Satin-Black Powdercoated Baskets Bright Anodized Surround Clamp Ring Anniversary Edition Cone Badge Anniversary Edition Terminal Label General Specifications Continuous Power Handling (RMS) 1500 W Recommended Amplifier Power (RMS) 500 - 1500 W Nominal Impedance (Znom) Dual 1.5 Ω Physical Specifications Nominal Diameter 13.5 in / 345 mm Overall Diameter (A) 14 in / 356 mm Mounting Hole Diameter (B) 11.9 in / 302 mm Bolt Hole Circle Diameter (C) 12.7 in / 323 mm Motor Outer Diameter (D) 8.38 in / 213 mm Mounting Depth (E) 10.5 in / 267 mm Driver Displacement 0.21 cu ft / 5.9 L Net Weight 52 lb / 23.6 kg Parameters Free Air Resonance (Fs) 23.5 Hz Electrical “Q” (Qes) 0.476 Mechanical “Q” (Qms) 7.517 Total Speaker “Q” (Qts) 0.448 Equivalent Compliance (Vas) 3.68 cu ft / 104.3 L One-Way Linear Excursion (Xmax)* 1.25 in / 32 mm Reference Efficiency (no) 0.27% Efficiency (1 W / 1 m)** 86.3 dB SPL Effective Piston Area (Sd) 107.35 sq in / 0.0693 sq m DC Resistance (Re)*** 2.41 Ω * Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.** For parallel-wired voice coils, divide "Re" by 4. All other specifications remain the same.*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same. Sealed Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 1.0 in / 25 mm Volume (net int.) 1.875 cu ft / 53.1 L External Width (W) 16 in / 407 mm External Height (H) 16 in / 407 mm External Depth (D) 18.875 in / 479 mm F3 37.4 Hz Fc 40.5 Hz Qtc 0.77 Enclosure NotesNet volumes given above do not include the air volume displaced by the speaker (Driver Displacement). This value must be added to the net volume along with the displacement of any braces and/or ports (if applicable) to arrive at a gross internal volume. Air inside a port is not part of the effective net volume. Calculate ports as solid, not hollow objects. * The W7’s employ a pole vent to remove heat and pressure from the inside of the speaker. This vent is located at the rear of the speaker. A minimum distance of 0.75 in (19 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent. The dimensions given for the enclosure examples above take all applicable displacements into consideration Safety NoticeIt is absolutely essential that the completed subwoofer enclosure is mounted firmly to the vehicle with heavy steel bolts (0.5 in diameter) and large steel washers on both sides of the bolts. This will reduce the likelihood of occupant injury in the event of a collision or sudden deceleration. Ported Enclosure Specifications Wall Thickness 0.75 in / 19 mm Front Baffle Thickness 1.0 in / 25 mm Volume (net int.) 2.375 cu ft / 67.3 L External Width (W) 25.875 in / 657 mm External Height (H) 16 in / 406 mm External Depth (D) 17.25 in / 438 mm Internal Slot Port Width (SW) 2.25 in / 57 mm Internal Slot Port Height (SH) 14.5 in / 368 mm Internal Slot Port Length (SL) 26.25 in / 667 mm Port Extension Length (EL) 7.875 in / 200 mm Tuning Frequency (Fb) 34.6 Hz F3 30.3 Hz Enclosure NotesNet volumes given above do not include the air volume displaced by the speaker (Driver Displacement). This value must be added to the net volume along with the displacement of any braces and/or ports (if applicable) to arrive at a gross internal volume. Air inside a port is not part of the effective net volume. Calculate ports as solid, not hollow objects. * The W7’s employ a pole vent to remove heat and pressure from the inside of the speaker.This vent is located at the rear of the speaker. A minimum distance of 0.75 in (19 mm) is required between the back of the speaker and any wall of the enclosure to allow proper operation of the pole vent. The dimensions given for the enclosure examples above take all applicable displacements into consideration Safety NoticeIt is absolutely essential that the completed subwoofer enclosure is mounted firmly to the vehicle with heavy steel bolts (0.5 in diameter) and large steel washers on both sides of the bolts. This will reduce the likelihood of occupant injury in the event of a collision or sudden deceleration.