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Earthquake Sound DB15

15" · 4 Ω · 750 W · 86.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size15"
Impedance4 Ω
Fs23 Hz
Qts0.968
Qes1.08
Qms9.33
Vas95.4 L
Sd695.1 cm²
Xmax11.1 mm
Re3.33 Ω
Bl12.3 T·m
Mms340 g
Pe750 W
Sensitivity86.1 dB

Alignment hint

EBP21 · sealed
Sealed Vb (Qtc ≈ 0.71)Qts too high

EBP < 50: favours a sealed (closed) alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Hertz Audio ES 380.532 +90.9 -0.0798.8 +3.49 -2.187.1 +1usable450 W vs 750 W: lower power handling · Xmax 9 mm < 11.1 mm: lower excursion-limited SPL+
Dayton Audio UMII15-2229 +60.701 -0.2796 +0.69.3 -1.888.5 +2.4usable8 Ω vs 4 Ω: amp load changes · Xmax 9.3 mm < 11.1 mm: lower excursion-limited SPL+
Sono Concept Plus E07094D25 +20.796 -0.17135.3 +39.96.1 -585.9 -0.2usable8 Ω vs 4 Ω: amp load changes · 200 W vs 750 W: lower power handling · Xmax 6.1 mm < 11.1 mm: lower excursion-limited SPL+
Soundstream R1-1523.7 +0.70.62 -0.35136.6 +41.217.2 +6.187.2 +1.1usable8 Ω vs 4 Ω: amp load changes+
Rockville 81921602073933 +100.886 -0.0870.6 -24.812.9 +1.892.1 +6usable+
Rockville W15K9D433 +100.886 -0.0870.6 -24.812.9 +1.892.1 +6usable+
Alpine SWR-1542D23 =0.452 -0.52100 +4.610.3 -0.886.7 +0.6usable8 Ω vs 4 Ω: amp load changes · Xmax 10.3 mm < 11.1 mm: lower excursion-limited SPL+
Rockford Fosgate T0D41526.2 +3.20.521 -0.4594.4 -19.7 -1.488 +1.9usable8 Ω vs 4 Ω: amp load changes · Xmax 9.7 mm < 11.1 mm: lower excursion-limited SPL+
Rockford Fosgate P3D4-1522.4 -0.60.566 -0.4155.8 +60.411 -0.187.3 +1.2risky8 Ω vs 4 Ω: amp load changes · Xmax 11 mm < 11.1 mm: lower excursion-limited SPL+
Audiobahn AW150T30.6 +7.60.54 -0.4395 -0.410 -1.188.5 +2.4riskyXmax 10 mm < 11.1 mm: lower excursion-limited SPL+

Compare the closest 3 against the DB15 →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.