Dibeisi PS1805-8

18" · 8 Ω · 250 W · 96.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	27.1 Hz
Qts	0.4
Qes	0.468
Qms	2.76
Vas	473.8 L
Sd	1225 cm²
Xmax	7 mm
Re	6.3 Ω
Bl	18.7 T·m
Mms	152.9 g
Pe	250 W
Sensitivity	96.1 dB

Alignment hint

EBP	58 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 223 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
Mach 5 Audio MAC MAH CWA46	27 -0.1	0.448 +0.05	470.3 -3.5	10 +3	96.2 +0.1	close		+
Beyma 18LX60	27 -0.1	0.368 -0.03	500 +26.2	9 +2	97.7 +1.6	close		+
SB Audience BIANCO-18SW450 v2020	27 -0.1	0.375 -0.03	423 -50.8	9 +2	97.2 +1.1	close		+
Eminence KAPPA 18 A	28 +0.9	0.408 +0.01	475.5 +1.7	4.8 -2.2	95.9 -0.2	close	Xmax 4.8 mm < 7 mm: lower excursion-limited SPL	+
McCauley 6260-8	28 +0.9	0.379 -0.02	391 -82.8	8 +1	96.7 +0.6	close		+
Fane 18-500 TLHP	29 +1.9	0.403 =	521 +47.2	6.3 -0.7	98.2 +2.1	close	Xmax 6.3 mm < 7 mm: lower excursion-limited SPL	+
SB Audience BIANCO-18SW450 v2024	28 +0.9	0.445 +0.04	370.4 -103.4	9.1 +2.1	96.4 +0.3	close		+
Pyle Audio PPA18 vp	24.2 -2.9	0.39 -0.01	503.2 +29.4	6 -1	93.1 -3	usable	16 Ω vs 8 Ω: amp load changes · Xmax 6 mm < 7 mm: lower excursion-limited SPL	+
Beyma SM118	30 +2.9	0.421 +0.02	430 -43.8	5.5 -1.5	97.2 +1.1	usable	Xmax 5.5 mm < 7 mm: lower excursion-limited SPL	+
Peerless FSL-1830R09-04	27.8 +0.7	0.427 +0.03	356 -117.8	8.5 +1.5	97.8 +1.7	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the PS1805-8 →

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.