JL AUDIO 8W7AE

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Table_Image
Continuous Power Handling (RMS)500 W
Recommended Amplifier Power (RMS)200 - 500 W
Nominal Impedance (Znom)3 Ω

Physical Specifications

Table_Image
Nominal Diameter8.0 in / 200 mm
Overall Diameter (A)8.5 in / 216 mm
Mounting Hole Diameter (B)6.94 in / 176 mm
Bolt Hole Circle Diameter (C)7.39 in / 188 mm
Motor Outer Diameter (D)5.79 in / 147 mm
Mounting Depth (E)6.83 in / 173 mm
Driver Displacement0.06 cu ft / 1.7 L
Net Weight17 lb / 7.8 kg

Parameters

Free Air Resonance (Fs)35.2 Hz
Electrical “Q” (Qes)0.654
Mechanical “Q” (Qms)9.5
Total Speaker “Q” (Qts)0.612
Equivalent Compliance (Vas)0.61 cu ft / 17.4 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)38 sq in / 0.0245 sq m
DC Resistance (Re)2.78 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

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Wall Thickness0.75 in / 19 mm
Front Baffle Thickness0.75 in / 19 mm
Volume (net int.)0.875 cu ft / 24.8 L
External Width (W)12.875 in / 327 mm
External Height (H)12.875 in / 327 mm
External Depth (D)14 in / 356 mm
F341.3 Hz
Fc45.9 Hz
Qtc0.798

Enclosure Notes
Net 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

Ported Enclosure Specifications

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Wall Thickness0.75 in / 19 mm
Front Baffle Thickness0.75 in / 19 mm
Volume (net int.)1.00 cu ft / 28.3 L
External Width (W)18.75 in / 476 mm
External Height (H)12.875 in / 327 mm
External Depth (D)14 in / 356 mm
Internal Slot Port Width (SW)1.375 in / 35 mm
Internal Slot Port Height (SH)11.375 in / 289 mm
Internal Slot Port Length (SL)27.875 in / 708 mm
Port Extension Length (EL)13.1875 in / 335 mm
Tuning Frequency (Fb)36.8 Hz
F330.1 Hz

Enclosure Notes
Net 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