Beyma 18P1200Nd

18" · 8 Ω · 1200 W · 98.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	37 Hz
Qts	0.339
Qes	0.35
Qms	10.39
Vas	198 L
Sd	1225 cm²
Xmax	8.4 mm
Re	5.3 Ω
Bl	26.3 T·m
Mms	196.6 g
Pe	1200 W
Sensitivity	98.3 dB

Alignment hint

EBP	106 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 59.1 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
Fane Colossus 18SB	36 -1	0.346 +0.01	199 +1	8.25 -0.15	100 +1.7	close	Xmax 8.25 mm < 8.4 mm: lower excursion-limited SPL	+
Fane COLOSSUS 18XT5N	36 -1	0.331 -0.01	185 -13	8.4 =	97.4 -0.9	close		+
B&C 18 RBX 100	35 -2	0.343 =	220 +22	8.3 -0.1	98.1 -0.2	close	Xmax 8.3 mm < 8.4 mm: lower excursion-limited SPL	+
B&C 18PZW100	37 =	0.36 +0.02	186 -12	8 -0.4	97.6 -0.7	close	Xmax 8 mm < 8.4 mm: lower excursion-limited SPL	+
18 Sound 18LW2420	34 -3	0.36 +0.02	196 -2	10 +1.6	98 -0.3	close		+
Faital PRO 18HP1060	35 -2	0.33 -0.01	184.4 -13.6	12.45 +4.05	98 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
B&C 18 TBX 100	34 -3	0.352 +0.01	212 +14	9 +0.6	97.5 -0.8	close		+
Beyma 18G550	36 -1	0.374 +0.03	210 +12	8.1 -0.3	97.8 -0.5	close	900 W vs 1200 W: lower power handling · Xmax 8.1 mm < 8.4 mm: lower excursion-limited SPL	+
Beyma 18G550 v2015	36 -1	0.374 +0.03	210 +12	8.1 -0.3	97.8 -0.5	close	900 W vs 1200 W: lower power handling · Xmax 8.1 mm < 8.4 mm: lower excursion-limited SPL	+
Oberton 18XB700	36.1 -0.9	0.304 -0.04	183.22 -14.78	9 +0.6	98 -0.3	close		+

Compare the closest 3 against the 18P1200Nd →

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.