Beyma 18LEX1000/Nd

18" · 8 Ω · 1000 W · 97.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	34 Hz
Qts	0.391
Qes	0.42
Qms	5.6
Vas	260 L
Sd	1255 cm²
Xmax	9.4 mm
Re	5.1 Ω
Bl	22 T·m
Mms	186.1 g
Pe	1000 W
Sensitivity	97.8 dB

Alignment hint

EBP	81 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 114.5 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

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
Beyma 18LEX1000Nd	34 =	0.39 =	260 =	11 +1.6	98 +0.2	close		+
Beyma 18LEX1000Fe	34 =	0.38 -0.01	250 -10	11 +1.6	98 +0.2	close		+
Faital PRO 18HP1010	35 +1	0.4 +0.01	240.1 -19.9	9.75 +0.35	98 +0.2	close		+
Beyma 18G550/S-8	33 -1	0.396 +0.01	290 +30	9.3 -0.1	97.5 -0.3	close	Xmax 9.3 mm < 9.4 mm: lower excursion-limited SPL	+
PHL Audio 7030	34 =	0.378 -0.01	260 =	7.8 -1.6	97.6 -0.2	close	750 W vs 1000 W: lower power handling · Xmax 7.8 mm < 9.4 mm: lower excursion-limited SPL	+
Beyma 18G550 v2018	33 -1	0.396 +0.01	290 +30	9 -0.4	97.5 -0.3	close	Xmax 9 mm < 9.4 mm: lower excursion-limited SPL	+
PHL Audio 7090	36 +2	0.386 -0.01	260 =	8 -1.4	98.2 +0.4	close	Xmax 8 mm < 9.4 mm: lower excursion-limited SPL	+
Beyma 18LEX1200FE	32 -2	0.378 -0.01	277 +17	11 +1.6	97.4 -0.4	close		+
Fane COLOSSUS PRIME 18XS	33 -1	0.385 -0.01	257 -3	12 +2.6	95.4 -2.4	close		+
Faital PRO 18FX800	34 =	0.4 +0.01	247 -13	13.8 +4.4	96 -1.8	close		+

Compare the closest 3 against the 18LEX1000/Nd →

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.