Beyma 12"WR400

12" · 8 Ω · 400 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	42 Hz
Qts	0.27
Qes	0.28
Qms	5.6
Vas	91 L
Sd	530 cm²
Xmax	6.3 mm
Re	5.6 Ω
Bl	18 T·m
Mms	63 g
Pe	400 W
Sensitivity	97 dB

Alignment hint

EBP	150 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 15.5 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
Beyma 12WR400	42 =	0.285 +0.01	91.1 +0.1	6.3 =	96.9 -0.1	close		+
Beyma 12WRS400	42 =	0.29 +0.02	91 =	6.3 =	97 =	close		+
Beyma 12LW30/N v2015	42 =	0.269 =	84 -7	6.1 -0.2	96.3 -0.7	close	Xmax 6.1 mm < 6.3 mm: lower excursion-limited SPL	+
Faital PRO 12FH500	45 +3	0.25 -0.02	87.3 -3.7	7.5 +1.2	97 =	close		+
Beyma 12CXA400Nd	45 +3	0.268 =	102.2 +11.2	6 -0.3	98 +1	close	Xmax 6 mm < 6.3 mm: lower excursion-limited SPL	+
Beyma 12G40	44 +2	0.292 +0.02	81 -10	6 -0.3	96.8 -0.2	close	Xmax 6 mm < 6.3 mm: lower excursion-limited SPL	+
Focal W31X4	42 =	0.292 +0.02	91 =	5.5 -0.8	99.2 +2.2	close	4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling · Xmax 5.5 mm < 6.3 mm: lower excursion-limited SPL	+
Beyma 12"G40	44 +2	0.3 +0.03	81 -10	7 +0.7	97 =	close		+
Beyma 12CXA400Nd v2018	45 +3	0.251 -0.02	88.5 -2.5	5.5 -0.8	97.7 +0.7	close	Xmax 5.5 mm < 6.3 mm: lower excursion-limited SPL	+
PD PD 912	41.3 -0.7	0.253 -0.02	97.9 +6.9	5 -1.3	96.7 -0.3	close	Xmax 5 mm < 6.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12"WR400 →

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.