18 Sound 8NW650

8" · 16 Ω · 300 W · 95 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	16 Ω
Fs	62 Hz
Qts	0.25
Qes	0.26
Qms	4.13
Vas	18.99 L
Sd	230 cm²
Xmax	5.5 mm
Re	9.9 Ω
Bl	19.1 T·m
Mms	25 g
Pe	300 W
Sensitivity	95 dB

Alignment hint

EBP	238 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 2.7 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 8NW650	63 +1	0.25 =	17.8 -1.19	5.5 =	96 +1	close	8 Ω vs 16 Ω: amp load changes	+
Beyma 8"MC300Nd	62 =	0.22 -0.03	18 -0.99	6 +0.5	96 +1	close	8 Ω vs 16 Ω: amp load changes	+
Beyma 8WR300	65 +3	0.27 +0.02	15 -3.99	6 +0.5	95 =	close	8 Ω vs 16 Ω: amp load changes	+
B&C 8FMB51	67 +5	0.28 +0.03	20.7 +1.71	5.5 =	96.5 +1.5	close	8 Ω vs 16 Ω: amp load changes	+
B&C 8MDN51	68 +6	0.27 +0.02	17.5 -1.49	6 +0.5	97 +2	close	200 W vs 300 W: lower power handling	+
Beyma 8WRS300	65 +3	0.28 +0.03	15 -3.99	6 +0.5	95 =	close	8 Ω vs 16 Ω: amp load changes	+
Faital PRO 8PR210	65 +3	0.29 +0.04	15.4 -3.59	6.92 +1.42	95 =	usable	8 Ω vs 16 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
B&C 8MBX51	60 -2	0.29 +0.04	23 +4.01	6 +0.5	96.5 +1.5	usable	8 Ω vs 16 Ω: amp load changes · 200 W vs 300 W: lower power handling	+
Sica 8 K 3 PL	68.1 +6.1	0.25 =	12.2 -6.79	5 -0.5	95.1 +0.1	usable	8 Ω vs 16 Ω: amp load changes · Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Oberton 8NB201	70.56 +8.56	0.245 -0.01	12.54 -6.45	5.25 -0.25	95 =	usable	8 Ω vs 16 Ω: amp load changes · 200 W vs 300 W: lower power handling · Xmax 5.25 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 8NW650 →

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.