SB Audience 12MW300

12" · 8 Ω · 300 W · 98.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	43 Hz
Qts	0.264
Qes	0.27
Qms	12.7
Vas	104 L
Sd	543.3 cm²
Xmax	5.6 mm
Re	5.2 Ω
Bl	16.8 T·m
Mms	54.5 g
Pe	300 W
Sensitivity	98.7 dB

Alignment hint

EBP	159 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 16.8 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
PHL Audio 4500	42 -1	0.274 +0.01	108 +4	5.7 +0.1	99 +0.3	close		+
Beyma 12CXA400Nd	45 +2	0.268 =	102.2 -1.8	6 +0.4	98 -0.7	close		+
Beyma SM112	45 +2	0.262 =	101 -3	4.8 -0.8	98.3 -0.4	close	Xmax 4.8 mm < 5.6 mm: lower excursion-limited SPL	+
Beyma 12CXA400FE	42 -1	0.251 -0.01	119 +15	6 +0.4	98.1 -0.6	close		+
Beyma 12"WR400	42 -1	0.27 +0.01	91 -13	6.3 +0.7	97 -1.7	close		+
Focal W31X4	42 -1	0.292 +0.03	91 -13	5.5 -0.1	99.2 +0.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 5.5 mm < 5.6 mm: lower excursion-limited SPL	+
Beyma 12CXA400Nd v2018	45 +2	0.251 -0.01	88.5 -15.5	5.5 -0.1	97.7 -1	close	Xmax 5.5 mm < 5.6 mm: lower excursion-limited SPL	+
RCF LF 12G301	43 =	0.219 -0.05	97 -7	5.9 +0.3	98.6 -0.1	close		+
PD PD 912	41.3 -1.7	0.253 -0.01	97.9 -6.1	5 -0.6	96.7 -2	close	Xmax 5 mm < 5.6 mm: lower excursion-limited SPL	+
Precision Devices PD 912	41.3 -1.7	0.253 -0.01	97.9 -6.1	5 -0.6	96.7 -2	close	Xmax 5 mm < 5.6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12MW300 →

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.