Beyma 18P1200Nd vp1

18" · 8 Ω · 1200 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	43.8 Hz
Qts	0.376
Qes	0.39
Qms	10.12
Vas	116.9 L
Sd	1256.6 cm²
Xmax	6.1 mm
Re	5.08 Ω
Bl	29.9 T·m
Mms	250.1 g
Pe	1200 W
Sensitivity	98 dB

Alignment hint

EBP	112 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 46.1 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 18P1200Nd vp459	43.8 =	0.376 =	124.9 +8	6.3 +0.2	98.3 +0.3	close		+
PRV Audio 18SW3000	43.7 -0.1	0.342 -0.03	111.3 -5.6	6.7 +0.6	98.1 +0.1	close		+
Celestion CF1840JD	44.2 +0.4	0.444 +0.07	113.9 -3	8.5 +2.4	96.8 -1.2	close		+
PD PD 1852	40 -3.8	0.33 -0.05	129.1 +12.2	6.2 +0.1	97.2 -0.8	close		+
Precision Devices PD 1852	40 -3.8	0.33 -0.05	129.1 +12.2	6.2 +0.1	97.2 -0.8	close		+
P.Audio C18-650EL v2009	45 +1.2	0.375 =	158.3 +41.4	5.3 -0.8	99.4 +1.4	usable	Xmax 5.3 mm < 6.1 mm: lower excursion-limited SPL	+
Beyma 18P100FE	40 -3.8	0.39 +0.01	163.2 +46.3	7.1 +1	98.1 +0.1	usable		+
MAG Audio M 1805	37.5 -6.3	0.357 -0.02	138.5 +21.6	7.1 +1	96.7 -1.3	usable		+
B&C 18 PZB 46	37 -6.8	0.374 =	155 +38.1	6.5 +0.4	96.8 -1.2	usable	700 W vs 1200 W: lower power handling	+
Celestion T5667A 18-190X	47.7 +3.9	0.37 -0.01	84.95 -31.95	6.1 =	95.6 -2.4	usable	4 Ω vs 8 Ω: amp load changes · 600 W vs 1200 W: lower power handling	+

Compare the closest 3 against the 18P1200Nd vp1 →

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.