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BMS 12S305

12" · 8 Ω · 800 W · 95 dB

Thiele-Small parameters

Nominal size12"
Impedance8 Ω
Fs35 Hz
Qts0.265
Qes0.278
Qms5.8
Vas82 L
Sd515 cm²
Xmax11 mm
Re5.4 Ω
Bl20.14 T·m
Mms95 g
Pe800 W
Sensitivity95 dB

Alignment hint

EBP126 · ported
Sealed Vb (Qtc ≈ 0.71)≈ 13.4 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
BMS 12N80439 +40.29 +0.0271 -118 -395 =usableXmax 8 mm < 11 mm: lower excursion-limited SPL+
18 Sound 12NLW941042 +70.26 -0.0155 -2711 =95 =usable+
RCF L 12P30040 +50.242 -0.0281 -17.8 -3.296.7 +1.7usableXmax 7.8 mm < 11 mm: lower excursion-limited SPL+
Sica 12 PFS 439 +40.26 -0.0155.6 -26.49 -294.8 -0.2usableXmax 9 mm < 11 mm: lower excursion-limited SPL+
SICA 12 S 2.5 CS33 -20.265 =93.7 +11.76 -594 -1usable300 W vs 800 W: lower power handling · Xmax 6 mm < 11 mm: lower excursion-limited SPL+
BMS 12S33028.6 -6.40.24 -0.0385.5 +3.58 -396 +1usable600 W vs 800 W: lower power handling · Xmax 8 mm < 11 mm: lower excursion-limited SPL+
18 Sound 12NTLX350039 +40.33 +0.0779.6 -2.47.9 -3.195.5 +0.5usable600 W vs 800 W: lower power handling · Xmax 7.9 mm < 11 mm: lower excursion-limited SPL+
Eminence KappaLITE 3012LF37 +20.32 +0.05106.65 +24.659.1 -1.995.5 +0.5usable450 W vs 800 W: lower power handling · Xmax 9.1 mm < 11 mm: lower excursion-limited SPL+
Beyma 12LW30/N v201542 +70.269 =84 +26.1 -4.996.3 +1.3usable450 W vs 800 W: lower power handling · Xmax 6.1 mm < 11 mm: lower excursion-limited SPL+
Beyma POWER 12 COMPETITION29 -60.27 +0.01122 +409 -295.1 +0.1usable500 W vs 800 W: lower power handling · Xmax 9 mm < 11 mm: lower excursion-limited SPL+

Compare the closest 3 against the 12S305 →

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.