Beyma 18P80/ND

18" · 8 Ω · 800 W · 99.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.283
Qes	0.29
Qms	11.55
Vas	411 L
Sd	1225 cm²
Xmax	7.5 mm
Re	5.1 Ω
Bl	21.9 T·m
Mms	144.1 g
Pe	800 W
Sensitivity	99.8 dB

Alignment hint

EBP	103 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 78.4 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
Faital PRO 18FH510	30 =	0.29 +0.01	411.9 +0.9	9.25 +1.75	98 -1.8	close	600 W vs 800 W: lower power handling	+
JBL 2258H	31 +1	0.265 -0.02	407 -4	8 +0.5	100.2 +0.4	close		+
18 Sound 18LW800	29 -1	0.272 -0.01	448 +37	8 +0.5	99.8 =	close	500 W vs 800 W: lower power handling	+
Electro-Voice EVX-180A	29 -1	0.27 -0.01	416 +5	6.4 -1.1	99.5 -0.3	close	600 W vs 800 W: lower power handling · Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
Electro-Voice EVX-180B	29 -1	0.27 -0.01	416 +5	6.4 -1.1	99.5 -0.3	close	600 W vs 800 W: lower power handling · Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
DAS Audio S1846 vp2	29.6 -0.4	0.298 +0.02	384 -27	8 +0.5	97.7 -2.1	close	550 W vs 800 W: lower power handling	+
B&C 18 RXB	33 +3	0.282 =	370 -41	10 +2.5	100.3 +0.5	close		+
Monacor SP-18/600FH	30 =	0.327 +0.04	404 -7	9.3 +1.8	99 -0.8	close	600 W vs 800 W: lower power handling	+
Faital PRO 18FH510	30 =	0.26 -0.02	391.4 -19.6	9.45 +1.95	98 -1.8	close	4 Ω vs 8 Ω: amp load changes · 600 W vs 800 W: lower power handling	+
18 Sound 18NLW9300	30 =	0.28 =	316 -95	8 +0.5	98.7 -1.1	close		+

Compare the closest 3 against the 18P80/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.