RCF L 10/581K

10" · 8 Ω · 250 W · 99.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	8 Ω
Fs	85 Hz
Qts	0.369
Qes	0.41
Qms	3.7
Vas	25 L
Sd	350 cm²
Xmax	2.5 mm
Re	4.8 Ω
Bl	12.3 T·m
Mms	24.1 g
Pe	250 W
Sensitivity	99.9 dB

Alignment hint

EBP	207 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 9.4 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 CF1	84.8 -0.2	0.318 -0.05	26 +1	3.3 +0.8	100.2 +0.3	close		+
Celestion BN10-200S8	89.4 +4.4	0.352 -0.02	20.5 -4.5	2.5 =	99.5 -0.4	close		+
PHL Audio 3040	86 +1	0.393 +0.02	24 -1	2 -0.5	98.7 -1.2	close	160 W vs 250 W: lower power handling · Xmax 2 mm < 2.5 mm: lower excursion-limited SPL	+
JBL 2123H	85 =	0.322 -0.05	19.8 -5.2	2.5 =	100 +0.1	close		+
RCF MB 10G251	76 -9	0.335 -0.03	24 -1	3.5 +1	98.6 -1.3	close		+
Celestion TF 1020	75 -10	0.372 =	26.6 +1.6	2 -0.5	98.1 -1.8	close	150 W vs 250 W: lower power handling · Xmax 2 mm < 2.5 mm: lower excursion-limited SPL	+
Celestion BN10-300S4	80.7 -4.3	0.437 +0.07	21.8 -3.2	3.5 +1	100 +0.1	usable	4 Ω vs 8 Ω: amp load changes	+
Oberton 10M150	74 -11	0.43 +0.06	25.9 +0.9	3.25 +0.75	99 -0.9	usable	150 W vs 250 W: lower power handling	+
Monacor SP-25A/200NEO	69 -16	0.349 -0.02	25 =	3.1 +0.6	97.2 -2.7	usable		+
Fane STUDIO 10M	73 -12	0.34 -0.03	27.2 +2.2	3.1 +0.6	97.9 -2	usable		+

Compare the closest 3 against the L 10/581K →

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.