Beyma 12B100R v1

12" · 8 Ω · 150 W · 94.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	26 Hz
Qts	0.259
Qes	0.27
Qms	6.42
Vas	195 L
Sd	530 cm²
Xmax	3 mm
Re	5.9 Ω
Bl	16.4 T·m
Mms	75.7 g
Pe	150 W
Sensitivity	94.3 dB

Alignment hint

EBP	96 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 30.2 L

EBP 50-100: works in either a sealed or ported 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
SEAS 33F-WKA MINE	24.8 -1.2	0.236 -0.02	206.1 +11.1	4.5 +1.5	94.4 +0.1	close	70 W vs 150 W: lower power handling	+
Audax HT300Z4	25 -1	0.288 +0.03	193 -2	4 +1	96.3 +2	close	4 Ω vs 8 Ω: amp load changes · 100 W vs 150 W: lower power handling	+
Great Plains Audio 3124 GPA	26 =	0.288 +0.03	186.9 -8.1	6.4 +3.4	93.1 -1.2	close		+
Audax HD33S66 vp - AP	26 =	0.286 +0.03	228 +33	3.5 +0.5	92.9 -1.4	close		+
Altec 3124	26 =	0.288 +0.03	186.9 -8.1	6.4 +3.4	92.9 -1.4	close		+
Fostex FW 305	25 -1	0.254 -0.01	254 +59	4.8 +1.8	94.3 =	close	60 W vs 150 W: lower power handling	+
Axon 12K01	25 -1	0.289 +0.03	191.8 -3.2	6.7 +3.7	95.4 +1.1	close	4 Ω vs 8 Ω: amp load changes	+
Fostex W 300 A	25 -1	0.281 +0.02	227 +32	4.6 +1.6	93.4 -0.9	close	50 W vs 150 W: lower power handling	+
Fostex W 300 AII	25 -1	0.281 +0.02	227 +32	4.6 +1.6	93.4 -0.9	close	50 W vs 150 W: lower power handling	+
JBL 252G	23 -3	0.25 -0.01	178 -17	7 +4	93.8 -0.5	close		+

Compare the closest 3 against the 12B100R 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.