10W5-D8 Fs (free-air resonance): 31.2 Hz Qts (total speaker “Q”): 0.412 Qes (electrical “Q”): 0.457 Qms (mechanical “Q”): 4.206 Vas (equivalent compliance): 1.60 ft3 45.3 liters 2.06 ft3 58.3 liters Xmax (linear excursion one-way): 0.295 in. 7.5 mm 0.281 in. 7.1 mm Efficiency (1W/1m)*: 87.3 dB 87.7 dB 2 2 Sd (effective piston surface area): 51.8 in 0.0334 m 51.8 in2 0.0334 m2 Re (DC resistance): 7.72 Ω (in series) 13.56 Ω (in series) Znom (nominal impedance): Dual 4 Ω Dual 8 Ω Pt (continuous thermal power handling): 250 Watts 250 Watts *Efficiency (1W/1m) 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”!
Physical Dimensions D
mm in. 10.125 257.2 Frame Diameter (A): mm 9.125 231.77 in. Mounting Hole Diameter (B): mm in. 4.25 107.95 Mounting Depth (C): 4.875 123.82 Overall Depth (D): mm in. mm 6.125 155.57 in. Magnet Diameter (E): 3 0.055 1.555 Displacement: ft liters Be sure to allow 0.75 inches (19mm) for pole vent clearance on this driver.
10W5-D4 Volume (Net Int.)
Sealed Enclosure Ported Enclosure
width X height X depth
Not Recommended 1.25 ft3 35.4 l
18” x 13” x 13.75” 457mm x 330mm x 349mm
Volume (Net Int.)
width X height X depth
Not Recommended 1.50 ft3 42.5 l
18” x 13” x 16” 457mm x 330mm x 406mm
3” X 10.7”
3” X 8.4”
(inside dia. X length)
76mm X 272mm
76mm X 213mm
Normal Recommended Enclosures Model
•Enclosure dimensions listed are external dimensions which assume the use of 0.75 inch (19mm) thick material. If you are using 0.625 inch (16mm) thick material, subtract 0.25 inches (6.5mm) from each dimension. Do not use material with a thickness of less than 0.625 inches (16mm). •Enclosure volumes listed are NET internal volumes. Driver displacement, port displacement and brace displacement must be added to obtain the final gross volume. The dimensions listed have already taken this into account. •When using two subwoofers in a common enclosure simply double the required volumes and use two of the recommended ports (when needed). Likewise, when using three subwoofers in a common enclosure simply triple the required volume and number of ports (when needed).
With coils wired in parallel, a dual 4Ω speaker will present a 2Ω load. With coils wired in parallel, a dual 8Ω speaker will present a 4Ω load.
With coils AND speakers wired in parallel: 2 dual 4Ω speakers (D4) will present a 1Ω load. With coils AND speakers wired in parallel: 2 dual 8Ω speakers (D8) will present a 2Ω load.
With coils wired in series, a dual 4Ω speaker will present a 8Ω load. With coils wired in series, a dual 8Ω speaker will present a 16Ω load.
With the coils wired in series and the speakers wired in parallel: 2 dual 4Ω speakers (D4) will present a 4Ω load. With the coils wired in series and the speakers wired in parallel: 2 dual 8Ω speakers (D8) will present a 8Ω load.
•Do NOT use different impedance speakers when using multiple subwoofers! •JL Audio recommends using subwoofers as part of a bi-amplified system using high quality satellite speakers like our Evolution line of coaxial and component speakers. We do not recommend the use of passive crossover components (coils) on subwoofers. These components may adversely affect the performance of a subwoofer. •When dealing with exceedingly long port lengths, we recommend the use of JL Audio’s Flex-Port System. The Flex-Port tubing is flexible, allowing it to fit in otherwise tight locations. The Port mouths provide not only a convenient method of securing the port, but a smooth, rounded edge for the port termination as well.