Beyma LIBERTY

12" · 8 Ω · 300 W · 99.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	37 Hz
Qts	0.167
Qes	0.17
Qms	8.46
Vas	130 L
Sd	550 cm²
Xmax	2.5 mm
Re	5.7 Ω
Bl	21.7 T·m
Mms	60.4 g
Pe	300 W
Sensitivity	99.3 dB

Alignment hint

EBP	218 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 7.7 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
Audax PR33S100 vp1	36.8 -0.2	0.164 =	124.3 -5.7	3.8 +1.3	98.9 -0.4	close	200 W vs 300 W: lower power handling	+
Ciare M320.75 C/Fx - 08	40 +3	0.155 -0.01	106 -24	2.3 -0.2	99.1 -0.2	close	100 W vs 300 W: lower power handling · Xmax 2.3 mm < 2.5 mm: lower excursion-limited SPL	+
Beyma 12G200	40 +3	0.184 +0.02	108 -22	3 +0.5	98.3 -1	usable	200 W vs 300 W: lower power handling	+
Audax PR33S100 vp2	35 -2	0.136 -0.03	136.9 +6.9	3.8 +1.3	99.6 +0.3	usable	200 W vs 300 W: lower power handling	+
PD PD 123C001	35 -2	0.144 -0.02	122 -8	6.4 +3.9	99.1 -0.2	usable		+
Precision Devices PD 123C001	35 -2	0.144 -0.02	122 -8	6.4 +3.9	99.1 -0.2	usable		+
BMS 12N820	37.8 +0.8	0.16 -0.01	98.7 -31.3	4.5 +2	98 -1.3	usable		+
Benett 12.200 X/N	40 +3	0.181 +0.01	162 +32	3 +0.5	100.7 +1.4	usable	100 W vs 300 W: lower power handling	+
Monacor SP-30PAX	46 +9	0.164 =	130 =	3.9 +1.4	102.3 +3	usable	200 W vs 300 W: lower power handling	+
Beyma 12G250/R	42 +5	0.173 +0.01	106 -24	2 -0.5	99.5 +0.2	usable	200 W vs 300 W: lower power handling · Xmax 2 mm < 2.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the LIBERTY →

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.