Eminence DELTA PRO 18 A

18" · 8 Ω · 500 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	26 Hz
Qts	0.32
Qes	0.33
Qms	10.38
Vas	493.2 L
Sd	1188 cm²
Xmax	6.7 mm
Re	5.3 Ω
Bl	19.9 T·m
Mms	150.3 g
Pe	500 W
Sensitivity	98 dB

Alignment hint

EBP	79 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 127 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
Eminence DELTA PRO 18	26 =	0.301 -0.02	523 +29.8	6.7 =	98.4 +0.4	close		+
Eminence SIGMA PRO 18 (prodance)	26 =	0.301 -0.02	523 +29.8	6.1 -0.6	98.4 +0.4	close	Xmax 6.1 mm < 6.7 mm: lower excursion-limited SPL	+
Eminence DELTA PRO 18 (Prodance)	26.6 +0.6	0.301 -0.02	533.6 +40.4	6.7 =	98.8 +0.8	close		+
Beyma 18LX60	27 +1	0.368 +0.05	500 +6.8	9 +2.3	97.7 -0.3	close		+
Eminence JAY7010	28.1 +2.1	0.314 -0.01	546.6 +53.4	9.1 +2.4	99.2 +1.2	close		+
Faital PRO 18FH500	28 +2	0.29 -0.03	456.7 -36.5	9.45 +2.75	98 =	close	4 Ω vs 8 Ω: amp load changes	+
Eminence KAPPA 18	28 +2	0.32 =	493.2 =	4.8 -1.9	98.9 +0.9	close	Xmax 4.8 mm < 6.7 mm: lower excursion-limited SPL	+
Eminence SIGMA PRO 18 A2 (prodance)	26 =	0.299 -0.02	613 +119.8	6.1 -0.6	98.3 +0.3	close	Xmax 6.1 mm < 6.7 mm: lower excursion-limited SPL	+
MCM Electronics 55-2964	27 +1	0.313 -0.01	630.6 +137.4	6 -0.7	98.1 +0.1	close	300 W vs 500 W: lower power handling · Xmax 6 mm < 6.7 mm: lower excursion-limited SPL	+
Eminence SIGMA PRO 18	28 +2	0.29 -0.03	441.2 -52	6.1 -0.6	98.1 +0.1	close	Xmax 6.1 mm < 6.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the DELTA PRO 18 A →

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.