P.Audio C18-600LF

18" · 8 Ω · 1200 W · 99.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	38 Hz
Qts	0.279
Qes	0.29
Qms	7.11
Vas	201 L
Sd	1225 cm²
Xmax	5.3 mm
Re	5.4 Ω
Bl	28.6 T·m
Mms	183.6 g
Pe	1200 W
Sensitivity	99.5 dB

Alignment hint

EBP	131 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 37.1 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
Ciare PW450ND	38 =	0.273 -0.01	205 +4	5 -0.3	99.5 =	close	500 W vs 1200 W: lower power handling · Xmax 5 mm < 5.3 mm: lower excursion-limited SPL	+
B&C 18 PS 76	39 +1	0.277 =	207 +6	5.3 =	100 +0.5	close	600 W vs 1200 W: lower power handling	+
Ciare 18.00 NDW	38.3 +0.3	0.273 -0.01	205 +4	5 -0.3	99.5 =	close	500 W vs 1200 W: lower power handling · Xmax 5 mm < 5.3 mm: lower excursion-limited SPL	+
B&C 18 PS 76 v2023	39 +1	0.277 =	207 +6	5.3 =	100.3 +0.8	close	600 W vs 1200 W: lower power handling	+
PD PD 188	37.4 -0.6	0.279 =	224.4 +23.4	6 +0.7	99.6 +0.1	close	600 W vs 1200 W: lower power handling	+
Precision Devices PD 188	37.4 -0.6	0.279 =	224.4 +23.4	6 +0.7	99.6 +0.1	close	600 W vs 1200 W: lower power handling	+
RCF L 18S800	39 +1	0.29 +0.01	206 +5	6.3 +1	100.2 +0.7	close	700 W vs 1200 W: lower power handling	+
RCF L 18S801	39 +1	0.29 +0.01	206 +5	6.3 +1	100.2 +0.7	close	700 W vs 1200 W: lower power handling	+
RCF L18S800	39 +1	0.29 +0.01	206 +5	5 -0.3	97.9 -1.6	close	300 W vs 1200 W: lower power handling · Xmax 5 mm < 5.3 mm: lower excursion-limited SPL	+
Fane 18-800N	38 =	0.306 +0.03	217 +16	7.1 +1.8	99.5 =	close	800 W vs 1200 W: lower power handling	+

Compare the closest 3 against the C18-600LF →

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.