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Celestion CF1840JD

18" · 8 Ω · 1800 W · 96.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size18"
Impedance8 Ω
Fs44.2 Hz
Qts0.444
Qes0.496
Qms4.21
Vas113.9 L
Sd1130 cm²
Xmax8.5 mm
Re5.29 Ω
Bl24.6 T·m
Mms203.7 g
Pe1800 W
Sensitivity96.8 dB

Alignment hint

EBP89 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 74.1 L

EBP 50-100: works in either a sealed or ported 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
Selenium VULCANO 3.8 18SWV3.847.4 +3.20.5 +0.06100.1 -13.811 +2.594.8 -2usable4 Ω vs 8 Ω: amp load changes+
Sica 18 PF 438 -6.20.43 -0.01147.3 +33.48 -0.596.3 -0.5usable1200 W vs 1800 W: lower power handling · Xmax 8 mm < 8.5 mm: lower excursion-limited SPL+
LaVoce SAF184.0238 -6.20.422 -0.02150 +36.18.1 -0.496.9 +0.1usable1200 W vs 1800 W: lower power handling · Xmax 8.1 mm < 8.5 mm: lower excursion-limited SPL+
Beyma 18P1200Nd vp143.8 -0.40.376 -0.07116.9 +36.1 -2.498 +1.2usable1200 W vs 1800 W: lower power handling · Xmax 6.1 mm < 8.5 mm: lower excursion-limited SPL+
DAS Audio 18SX39.2 -50.443 =171.9 +588 -0.596.4 -0.4usable1000 W vs 1800 W: lower power handling · Xmax 8 mm < 8.5 mm: lower excursion-limited SPL+
LaVoce SAN184.0238 -6.20.406 -0.04150 +36.17.9 -0.696.8 =usable1200 W vs 1800 W: lower power handling · Xmax 7.9 mm < 8.5 mm: lower excursion-limited SPL+
LaVoce SAF184.0437 -7.20.474 +0.03143 +29.19.3 +0.895.2 -1.6usable+
Beyma 18P1200Nd vp45943.8 -0.40.376 -0.07124.9 +116.3 -2.298.3 +1.5usable1200 W vs 1800 W: lower power handling · Xmax 6.3 mm < 8.5 mm: lower excursion-limited SPL+
PRV Audio 18SW300043.7 -0.50.342 -0.1111.3 -2.66.7 -1.898.1 +1.3usableXmax 6.7 mm < 8.5 mm: lower excursion-limited SPL+
JBL 18SWT3000(TORNADO)41 -3.20.55 +0.11126 +12.110.6 +2.193.7 -3.1usable4 Ω vs 8 Ω: amp load changes+

Compare the closest 3 against the CF1840JD →

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.