18 Sound 8NTLS2000

8" · 8 Ω · 350 W · 93.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	41 Hz
Qts	0.19
Qes	0.19
Qms	11.5
Vas	27 L
Sd	227 cm²
Xmax	7.4 mm
Re	5.4 Ω
Bl	17.2 T·m
Mms	42 g
Pe	350 W
Sensitivity	93.5 dB

Alignment hint

EBP	216 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 2.1 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
18 Sound 8NTLS2000	42 +1	0.24 +0.05	28 +1	7.4 =	93 -0.5	close	16 Ω vs 8 Ω: amp load changes	+
18 Sound 8NTLS2000	43 +2	0.24 +0.05	30 +3	7.4 =	93.5 =	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 8RS350	42 +1	0.3 +0.11	23.7 -3.3	7.37 -0.03	90 -3.5	usable	Xmax 7.37 mm < 7.4 mm: lower excursion-limited SPL	+
Faital PRO 8RS340	42 +1	0.34 +0.15	25.5 -1.5	7.33 -0.07	91 -2.5	usable	Xmax 7.33 mm < 7.4 mm: lower excursion-limited SPL	+
Beyma 8NMFW	37 -4	0.34 +0.15	27 =	9 +1.6	90 -3.5	usable	200 W vs 350 W: lower power handling	+
Beyma 8"P300Fe/N	53 +12	0.31 +0.12	24.8 -2.2	6 -1.4	94 +0.5	usable	Xmax 6 mm < 7.4 mm: lower excursion-limited SPL	+
B&C 8FG51	49 +8	0.32 +0.13	20 -7	6.5 -0.9	93 -0.5	risky	250 W vs 350 W: lower power handling · Xmax 6.5 mm < 7.4 mm: lower excursion-limited SPL	+
Beyma 8"MC300Nd	62 +21	0.22 +0.03	18 -9	6 -1.4	96 +2.5	risky	Xmax 6 mm < 7.4 mm: lower excursion-limited SPL	+
18 Sound 8NMB420	61 +20	0.28 +0.09	33 +6	5.8 -1.6	95 +1.5	risky	Xmax 5.8 mm < 7.4 mm: lower excursion-limited SPL	+
18 Sound 8NW650	62 +21	0.25 +0.06	18.99 -8.01	5.5 -1.9	95 +1.5	risky	16 Ω vs 8 Ω: amp load changes · Xmax 5.5 mm < 7.4 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 8NTLS2000 →

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.