B&C 18 IPAL

18" · 2 Ω · 1700 W · 105.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	2 Ω
Fs	32 Hz
Qts	0.135
Qes	0.14
Qms	4.2
Vas	164 L
Sd	1210 cm²
Xmax	5.7 mm
Re	1.3 Ω
Bl	24 T·m
Mms	309.6 g
Pe	1700 W
Sensitivity	105.7 dB

Alignment hint

EBP	229 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 6.2 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
Cerwin-Vega STOKER 18D2	31 -1	0.191 +0.06	163.7 -0.3	7 +1.3	102.7 -3	usable		+
B&C 18IPAL	32 =	0.14 +0.01	164 =	20 +14.3	97 -8.7	usable		+
B&C 18DS115	30 -2	0.17 +0.04	177 +13	16.5 +10.8	97 -8.7	usable	4 Ω vs 2 Ω: amp load changes	+
B&C 18 DS 115	30 -2	0.2 +0.07	168 +4	7.5 +1.8	97.4 -8.3	usable	8 Ω vs 2 Ω: amp load changes	+
B&C 18DS115	30 -2	0.2 +0.07	168 +4	16.5 +10.8	98 -7.7	usable	8 Ω vs 2 Ω: amp load changes	+
the box 18LB100-4N	34 +2	0.227 +0.09	175 +11	5.4 -0.3	97.7 -8	risky	4 Ω vs 2 Ω: amp load changes · 800 W vs 1700 W: lower power handling · Xmax 5.4 mm < 5.7 mm: lower excursion-limited SPL	+
Void Acoustic V18-1000	34.5 +2.5	0.216 +0.08	201.7 +37.7	5.3 -0.4	99.3 -6.4	risky	8 Ω vs 2 Ω: amp load changes · 1000 W vs 1700 W: lower power handling · Xmax 5.3 mm < 5.7 mm: lower excursion-limited SPL	+
18 Sound 18iD200	29 -3	0.17 +0.04	136 -28	18 +12.3	95 -10.7	risky		+
18 Sound 18iDSDS	29 -3	0.17 +0.04	136 -28	18 +12.3	95 -10.7	risky		+
B&C 18DS100	32 =	0.24 +0.1	157 -7	14 +8.3	98 -7.7	risky	4 Ω vs 2 Ω: amp load changes	+

Compare the closest 3 against the 18 IPAL →

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.