Quake Subwoofer Enclosure
Technical Specifications

Subwoofer ...JL Audio 10W0-4

R_E ...3.86 ohms

F_S ...24.2 Hz

F₃ ...23.74 Hz

F_B ...23.82 Hz

Q_MS ...8.56

Q_ES ...0.42

Q_TS ...0.40 [0.18 < Q_TS < 0.7 for optimum ported response characteristics]

X_max ...8.6mm

P_max ...125 W

Efficiency (1W/1m) ...85.7 dB

R_MS ...1.93 Ns/m

C_MS ...3.978x10 ^-4 m/N

C_AS ...4.957x10 ^-7 m⁵/N

V_AS ...69.4 L³ [approximate driver surface area = 353 cm²]

V_B ...59.94 L³ [internal volume of enclosure]

EBP ...57.6 = F_S ÷ Q_ES [should be greater than 50 for a ported box]

Enclosure uses 4 ports, each 40mm in diameter and 31.4cm long (51.52cm² total surface area, with port velocities maxing out at 4 m/s)

Primary driver data provided by JL Audio.
Additional data & graphs produced by lspCAD Lite software.