18 Sound 12ND830

12" · 8 Ω · 450 W · 99 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	55 Hz
Qts	0.28
Qes	0.3
Qms	5.15
Vas	72 L
Sd	531 cm²
Xmax	6.5 mm
Re	5.7 Ω
Bl	17.6 T·m
Mms	46 g
Pe	450 W
Sensitivity	99 dB

Alignment hint

EBP	183 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 13.4 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
Faital PRO 12FH520	50 -5	0.29 +0.01	73.7 +1.7	7.25 +0.75	98 -1	close		+
B&C 12NDL76	50 -5	0.27 -0.01	69 -3	7 +0.5	100 +1	close	16 Ω vs 8 Ω: amp load changes	+
LaVoce WAF123.03	50 -5	0.287 +0.01	70 -2	5.5 -1	99 =	close	Xmax 5.5 mm < 6.5 mm: lower excursion-limited SPL	+
18 Sound 12W750	49 -6	0.28 =	73 +1	8 +1.5	97 -2	close		+
RCF MB 12X301	50 -5	0.29 +0.01	70 -2	5.9 -0.6	98.3 -0.7	close	Xmax 5.9 mm < 6.5 mm: lower excursion-limited SPL	+
Peavey BLACK WIDOW 1205-8	55.6 +0.6	0.28 =	69 -3	4.5 -2	98 -1	close	5.2 Ω vs 8 Ω: amp load changes · 350 W vs 450 W: lower power handling · Xmax 4.5 mm < 6.5 mm: lower excursion-limited SPL	+
RCF MB 12G301	53 -2	0.264 -0.02	72 =	4.8 -1.7	99.5 +0.5	close	Xmax 4.8 mm < 6.5 mm: lower excursion-limited SPL	+
Peavey 1205-8 v1993	55.6 +0.6	0.281 =	69 -3	4.5 -2	100 +1	close	350 W vs 450 W: lower power handling · Xmax 4.5 mm < 6.5 mm: lower excursion-limited SPL	+
Faital PRO 12FH520	50 -5	0.27 -0.01	65.5 -6.5	7 +0.5	97 -2	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 12W750	55 =	0.27 -0.01	58 -14	7 +0.5	97 -2	close	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 12ND830 →

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.