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JBL 1800 GTI

18" · 4 Ω · 600 W · 100.3 dB

Thiele-Small parameters

Nominal size18"
Impedance4 Ω
Fs30 Hz
Qts0.431
Qes0.46
Qms6.77
Vas362.6 L
Sd1270 cm²
Xmax9.6 mm
Re2.5 Ω
Bl13.4 T·m
Mms175.5 g
Pe600 W
Sensitivity100.3 dB

Alignment hint

EBP65 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 214.3 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
McCauley 6152-830 =0.434 =354 -8.612 +2.497.1 -3.2close8 Ω vs 4 Ω: amp load changes+
Peerless FSL-1830R09-0427.8 -2.20.427 =356 -6.68.5 -1.197.8 -2.5close400 W vs 600 W: lower power handling · Xmax 8.5 mm < 9.6 mm: lower excursion-limited SPL+
SB Audience BIANCO-18SW450 v202428 -20.445 +0.01370.4 +7.89.1 -0.596.4 -3.9close8 Ω vs 4 Ω: amp load changes · 450 W vs 600 W: lower power handling · Xmax 9.1 mm < 9.6 mm: lower excursion-limited SPL+
Beyma 18WRS60030 =0.47 +0.04354 -8.68.5 -1.197 -3.3close8 Ω vs 4 Ω: amp load changes · Xmax 8.5 mm < 9.6 mm: lower excursion-limited SPL+
Eminence KILOMAX PRO 18 A v201632 +20.467 +0.04331.5 -31.110 +0.497.4 -2.9close8 Ω vs 4 Ω: amp load changes+
Faital PRO 18FH500 v201630 =0.35 -0.08374.8 +12.29.2 -0.498.4 -1.9close8 Ω vs 4 Ω: amp load changes · Xmax 9.2 mm < 9.6 mm: lower excursion-limited SPL+
SB Audience ROSSO-18SW65031 +10.418 -0.01304.3 -58.39 -0.697.2 -3.1close8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.6 mm: lower excursion-limited SPL+
Beyma 18LX60 vp131.3 +1.30.472 +0.04385 +22.49 -0.696.8 -3.5close8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.6 mm: lower excursion-limited SPL+
Beyma 18LX60 (prodance)31.3 +1.30.472 +0.04385.3 +22.79 -0.696.8 -3.5close8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.6 mm: lower excursion-limited SPL+
Selenium 18SWS110034 +40.447 +0.02316 -46.69.3 -0.397.8 -2.5close8 Ω vs 4 Ω: amp load changes · Xmax 9.3 mm < 9.6 mm: lower excursion-limited SPL+

Compare the closest 3 against the 1800 GTI →

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.