Beyma 18QLEX1600/Fe

18" · 8 Ω · 1600 W · 97.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.231
Qes	0.24
Qms	6.5
Vas	195 L
Sd	1255 cm²
Xmax	8.3 mm
Re	5.3 Ω
Bl	36.4 T·m
Mms	318.7 g
Pe	1600 W
Sensitivity	97.2 dB

Alignment hint

EBP	125 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 23.3 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
Beyma 18QLEX1600Fe	30 =	0.23 =	195 =	13 +4.7	97 -0.2	close		+
Precision Devices PD.1850/2	33.1 +3.1	0.24 +0.01	203.84 +8.84	11.1 +2.8	96.7 -0.5	close	800 W vs 1600 W: lower power handling	+
B&C 18 NW 100 v2019	30 =	0.268 +0.04	203.5 +8.5	8.3 =	98.3 +1.1	close	4 Ω vs 8 Ω: amp load changes · 1200 W vs 1600 W: lower power handling	+
RCF LF18N451	31 +1	0.24 +0.01	245 +50	9 +0.7	97.5 +0.3	close		+
Precision Devices PD.185C003-8	33 +3	0.24 +0.01	224 +29	11 +2.7	97.3 +0.1	close	1000 W vs 1600 W: lower power handling	+
Beyma 18QLEX1600Fe	31 +1	0.25 +0.02	177.2 -17.8	13 +4.7	96 -1.2	close	4 Ω vs 8 Ω: amp load changes	+
Fane COLOSSUS 18-1500	33.5 +3.5	0.25 +0.02	175 -20	8.1 -0.2	97.8 +0.6	close	Xmax 8.1 mm < 8.3 mm: lower excursion-limited SPL	+
B&C 18NW100	30 =	0.27 +0.04	203.5 +8.5	9 +0.7	95 -2.2	close	4 Ω vs 8 Ω: amp load changes · 1199 W vs 1600 W: lower power handling	+
RCF LF 18N451	31 +1	0.24 +0.01	245 +50	8.8 +0.5	98.7 +1.5	close		+
PD PD 185C003	33 +3	0.224 -0.01	224 +29	8.8 +0.5	99.1 +1.9	close		+

Compare the closest 3 against the 18QLEX1600/Fe →

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.