RCF CX 10g251

10" · 8 Ω · 300 W · 100 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	8 Ω
Fs	72 Hz
Qts	0.283
Qes	0.3
Qms	5
Vas	33 L
Sd	350 cm²
Xmax	3.8 mm
Re	5.2 Ω
Bl	14.1 T·m
Mms	25.4 g
Pe	300 W
Sensitivity	100 dB

Alignment hint

EBP	240 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 6.3 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
18 Sound 10NMB420 vp	67.3 -4.7	0.272 -0.01	33 =	4 +0.2	99.2 -0.8	close		+
B&C 10MBX64	65 -7	0.3 +0.02	30 -3	4 +0.2	100 =	close	16 Ω vs 8 Ω: amp load changes	+
Faital PRO 10HX240	65 -7	0.275 -0.01	31.8 -1.2	3.5 -0.3	98.4 -1.6	close	Xmax 3.5 mm < 3.8 mm: lower excursion-limited SPL	+
B&C 10MBX64	65 -7	0.26 -0.02	28 -5	4 +0.2	100 =	close		+
SB Audience BIANCO-10MW150	60 -12	0.293 +0.01	34.6 +1.6	4.3 +0.5	97.8 -2.2	close		+
18 Sound 10NMB420	65 -7	0.33 +0.05	30 -3	4 +0.2	99 -1	usable	16 Ω vs 8 Ω: amp load changes	+
B&C 10 HPL 64	61 -11	0.307 +0.02	32 -1	3.8 =	97.1 -2.9	usable	200 W vs 300 W: lower power handling	+
Eminence KAPPALITE 3010 H0	61.4 -10.6	0.263 -0.02	37.2 +4.2	4.4 +0.6	98.7 -1.3	usable		+
PHL Audio 3000	60 -12	0.272 -0.01	35 +2	3.4 -0.4	97.8 -2.2	usable	200 W vs 300 W: lower power handling · Xmax 3.4 mm < 3.8 mm: lower excursion-limited SPL	+
B&C 10MBX64-16	65 -7	0.3 +0.02	30 -3	4 +0.2	95.9 -4.1	usable	16 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the CX 10g251 →

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.