McCauley B1860

18" · 8 Ω · 400 W · 99.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	23.9 Hz
Qts	0.244
Qes	0.25
Qms	9.49
Vas	723.6 L
Sd	1283.2 cm²
Xmax	5.5 mm
Re	6.2 Ω
Bl	23 T·m
Mms	141.5 g
Pe	400 W
Sensitivity	99.1 dB

Alignment hint

EBP	96 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 97.8 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
Altec 3184	24 +0.1	0.219 -0.02	690.9 -32.7	6.4 +0.9	98.5 -0.6	close	300 W vs 400 W: lower power handling	+
Great Plains Audio 3184 GPA	24 +0.1	0.219 -0.02	690.9 -32.7	6.4 +0.9	98.5 -0.6	close	300 W vs 400 W: lower power handling	+
RCF LP 18/551	21.7 -2.2	0.222 -0.02	760 +36.4	10 +4.5	98.8 -0.3	close		+
Beyma 18GT200 v1	24.6 +0.7	0.213 -0.03	595 -128.6	5.8 +0.3	99.3 +0.2	close	250 W vs 400 W: lower power handling	+
Eminence 111712	21.6 -2.3	0.288 +0.04	736.2 +12.6	5.8 +0.3	97.1 -2	close		+
Electro-Voice DL18MT	24 +0.1	0.269 +0.03	580.5 -143.1	5.59 +0.09	96.6 -2.5	close		+
JBL 2245H	20 -3.9	0.24 =	821.2 +97.6	8.5 +3	97.2 -1.9	usable	300 W vs 400 W: lower power handling	+
Monacor SP-495PA	25 +1.1	0.286 +0.04	690 -33.6	4 -1.5	98.6 -0.5	usable	200 W vs 400 W: lower power handling · Xmax 4 mm < 5.5 mm: lower excursion-limited SPL	+
Eminence SIGMA PRO 18 A2 (prodance)	26 +2.1	0.299 +0.05	613 -110.6	6.1 +0.6	98.3 -0.8	usable		+
Fertin Acoustics 46EX 07.5V	22.2 -1.7	0.24 =	667.7 -55.9	3 -2.5	98.6 -0.5	usable	100 W vs 400 W: lower power handling · Xmax 3 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the B1860 →

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.