Beyma 12K200 v1

12" · 8 Ω · 250 W · 97.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	35 Hz
Qts	0.225
Qes	0.23
Qms	11.17
Vas	160 L
Sd	530 cm²
Xmax	4.5 mm
Re	6.2 Ω
Bl	17.4 T·m
Mms	50.9 g
Pe	250 W
Sensitivity	97.8 dB

Alignment hint

EBP	152 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 18 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
Fostex L 362	35 =	0.211 -0.01	153 -7	4.2 -0.3	97.4 -0.4	close	150 W vs 250 W: lower power handling · Xmax 4.2 mm < 4.5 mm: lower excursion-limited SPL	+
Fostex LS 362	35 =	0.211 -0.01	152.9 -7.1	4 -0.5	97.4 -0.4	close	150 W vs 250 W: lower power handling · Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Beyma 12XA30/ND	35 =	0.21 -0.02	172 +12	4 -0.5	97.2 -0.6	close	Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Monacor SP-330PAX	33 -2	0.238 +0.01	190 +30	4.5 =	97.4 -0.4	close	125 W vs 250 W: lower power handling	+
Fostex L 345	34 -1	0.242 +0.02	197 +37	5.7 +1.2	97.3 -0.5	close	150 W vs 250 W: lower power handling	+
RCF L 12/544	40 +5	0.224 =	130 -30	4.9 +0.4	98.7 +0.9	close	150 W vs 250 W: lower power handling	+
RCF L12/554K	40.3 +5.3	0.23 +0.01	130 -30	5 +0.5	97.5 -0.3	close	150 W vs 250 W: lower power handling	+
AE Speakers TD12M	38.1 +3.1	0.25 +0.02	140 -20	6 +1.5	97.3 -0.5	close		+
Eminence KAPPA PRO 12	37 +2	0.241 +0.02	121 -39	4.8 +0.3	97.5 -0.3	close		+
RCF L 12P400K	34 -1	0.241 +0.02	130 -30	6 +1.5	96.3 -1.5	close		+

Compare the closest 3 against the 12K200 v1 →

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.