Radian 2218Neo

18" · 8 Ω · 800 W · 99 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.23
Qes	0.25
Qms	3.2
Vas	312 L
Sd	1320 cm²
Xmax	9 mm
Re	5.4 Ω
Bl	33 T·m
Mms	266 g
Pe	800 W
Sensitivity	99 dB

Alignment hint

EBP	120 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 36.9 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
B&C 18 PZB 100	30 =	0.243 +0.01	297 -15	7.8 -1.2	98.8 -0.2	close	Xmax 7.8 mm < 9 mm: lower excursion-limited SPL	+
Oberton 18NSW700-8	30.5 +0.5	0.243 +0.01	309 -3	7.7 -1.3	98.6 -0.4	close	Xmax 7.7 mm < 9 mm: lower excursion-limited SPL	+
B&C 18 PZB 46 vp	28.8 -1.2	0.227 =	346.4 +34.4	8.1 -0.9	99 =	close	Xmax 8.1 mm < 9 mm: lower excursion-limited SPL	+
PD PD 184C01	30 =	0.227 =	337.1 +25.1	7.8 -1.2	100.2 +1.2	close	Xmax 7.8 mm < 9 mm: lower excursion-limited SPL	+
Precision Devices PD 184C01	30 =	0.227 =	337.1 +25.1	7.8 -1.2	100.2 +1.2	close	Xmax 7.8 mm < 9 mm: lower excursion-limited SPL	+
Oberton 18NSW700	30.48 +0.48	0.243 +0.01	309.02 -2.98	14 +5	97.5 -1.5	close		+
B&C 18PZB100	30 =	0.24 +0.01	297 -15	8 -1	97 -2	close	Xmax 8 mm < 9 mm: lower excursion-limited SPL	+
18 Sound 18NLW9400	32 +2	0.22 -0.01	278 -34	9.5 +0.5	98 -1	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 18ND9300	30 =	0.28 +0.05	322 +10	9.5 +0.5	98.8 -0.2	close		+
Fane COLOSSUS 18B600	29 -1	0.236 +0.01	345 +33	7.2 -1.8	98.7 -0.3	close	600 W vs 800 W: lower power handling · Xmax 7.2 mm < 9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 2218Neo →

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.