Peerless FSL-1830R09-04

18" · 4 Ω · 400 W · 97.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	27.8 Hz
Qts	0.427
Qes	0.44
Qms	14.98
Vas	356 L
Sd	1225.4 cm²
Xmax	8.5 mm
Re	3.67 Ω
Bl	16.8 T·m
Mms	193.8 g
Pe	400 W
Sensitivity	97.8 dB

Alignment hint

EBP	63 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 204.3 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
SB Audience BIANCO-18SW450 v2024	28 +0.2	0.445 +0.02	370.4 +14.4	9.1 +0.6	96.4 -1.4	close	8 Ω vs 4 Ω: amp load changes	+
McCauley 6152-8	30 +2.2	0.434 +0.01	354 -2	12 +3.5	97.1 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 18WRS600	30 +2.2	0.47 +0.04	354 -2	8.5 =	97 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
JBL 1800 GTI	30 +2.2	0.431 =	362.6 +6.6	9.6 +1.1	100.3 +2.5	close		+
SB Audience ROSSO-18SW650	31 +3.2	0.418 -0.01	304.3 -51.7	9 +0.5	97.2 -0.6	close	8 Ω vs 4 Ω: amp load changes	+
McCauley 6260-8	28 +0.2	0.379 -0.05	391 +35	8 -0.5	96.7 -1.1	close	8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 8.5 mm: lower excursion-limited SPL	+
Eminence KILOMAX PRO 18 A v2016	32 +4.2	0.467 +0.04	331.5 -24.5	10 +1.5	97.4 -0.4	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 18LX60 vp1	31.3 +3.5	0.472 +0.04	385 +29	9 +0.5	96.8 -1	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 18LX60 (prodance)	31.3 +3.5	0.472 +0.04	385.3 +29.3	9 +0.5	96.8 -1	close	8 Ω vs 4 Ω: amp load changes	+
SB Audience BIANCO-18SW450 v2020	27 -0.8	0.375 -0.05	423 +67	9 +0.5	97.2 -0.6	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the FSL-1830R09-04 →

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.