Beyma 18QLEX1600Fe

18" · 4 Ω · 1600 W · 96 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	31 Hz
Qts	0.25
Qes	0.25
Qms	11.6
Vas	177.2 L
Sd	1255 cm²
Xmax	13 mm
Re	3.6 Ω
Bl	30.7 T·m
Mms	36 g
Pe	1600 W
Sensitivity	96 dB

Alignment hint

EBP	124 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 25.3 L

EBP > 100: favours a ported (bass-reflex) alignment.

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

Substitute candidates

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
18 Sound 18LW2600	30 -1	0.28 +0.03	186 +8.8	14 +1	96.5 +0.5	close		+
Beyma 18QLEX1600Fe	30 -1	0.23 -0.02	195 +17.8	13 =	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
Precision Devices PD.185N02	35.2 +4.2	0.24 -0.01	178.28 +1.08	12 -1	96.8 +0.8	close	8 Ω vs 4 Ω: amp load changes · 1100 W vs 1600 W: lower power handling · Xmax 12 mm < 13 mm: lower excursion-limited SPL	+
18 Sound 18LW2600	31 =	0.29 +0.04	187 +9.8	14.8 +1.8	96.8 +0.8	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18DS100	32 +1	0.24 -0.01	157 -20.2	14 +1	98 +2	close		+
Oberton 18NXB1600	32.37 +1.37	0.303 +0.05	173.11 -4.09	13.5 +0.5	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18SW115	32 +1	0.3 +0.05	187 +9.8	14 +1	97 +1	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 18NLW4100	29 -2	0.27 +0.02	207 +29.8	15 +2	97 +1	close		+
Precision Devices PD.1850/2	33.1 +2.1	0.24 -0.01	203.84 +26.64	11.1 -1.9	96.7 +0.7	close	8 Ω vs 4 Ω: amp load changes · 800 W vs 1600 W: lower power handling · Xmax 11.1 mm < 13 mm: lower excursion-limited SPL	+
18 Sound 18NTLW5000	32 +1	0.3 +0.05	165 -12.2	17.5 +4.5	95 -1	close		+

Compare the closest 3 against the 18QLEX1600Fe →

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.