Beyma 12G300

12" · 8 Ω · 150 W · 102.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	44 Hz
Qts	0.154
Qes	0.157
Qms	7.11
Vas	142 L
Sd	500 cm²
Xmax	1.2 mm
Re	5.5 Ω
Bl	17.7 T·m
Mms	32.3 g
Pe	150 W
Sensitivity	102.5 dB

Alignment hint

EBP	280 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 7.1 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
Monacor SP-30PAX	46 +2	0.164 +0.01	130 -12	3.9 +2.7	102.3 -0.2	close		+
Tannoy MONITOR RED 12	48.6 +4.6	0.154 =	99.6 -42.4	1.2 =	101.8 -0.7	close	30 W vs 150 W: lower power handling	+
Ciare M320.75 C/Fx - 08	40 -4	0.155 =	106 -36	2.3 +1.1	99.1 -3.4	usable	100 W vs 150 W: lower power handling	+
Beyma LIBERTY	37 -7	0.167 +0.01	130 -12	2.5 +1.3	99.3 -3.2	usable		+
Benett 12.200 X/N	40 -4	0.181 +0.03	162 +20	3 +1.8	100.7 -1.8	usable	100 W vs 150 W: lower power handling	+
JBL D131	50 +6	0.176 +0.02	127.4 -14.6	0.8 -0.4	102.5 =	usable	75 W vs 150 W: lower power handling · Xmax 0.8 mm < 1.2 mm: lower excursion-limited SPL	+
18 Sound 12MB600	44 =	0.18 +0.03	115 -27	4.5 +3.3	101 -1.5	usable		+
Beyma 12G250/R	42 -2	0.173 +0.02	106 -36	2 +0.8	99.5 -3	usable		+
RCF L 12P110K	44 =	0.136 -0.02	98 -44	3 +1.8	101.3 -1.2	usable		+
JBL 2130	50 +6	0.2 +0.05	121.8 -20.2	1.5 +0.3	101.6 -0.9	usable	100 W vs 150 W: lower power handling	+

Compare the closest 3 against the 12G300 →

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.