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Siare 31SPCT vp jmp norm

12" · 8 Ω · 120 W · 88.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance8 Ω
Fs19.3 Hz
Qts0.399
Qes0.47
Qms2.66
Vas254 L
Sd461 cm²
Xmax4 mm
Re6.95 Ω
Bl12 T·m
Mms79.8 g
Pe120 W
Sensitivity88.5 dB

Alignment hint

EBP41 · sealed
Sealed Vb (Qtc ≈ 0.71)≈ 118.7 L

EBP < 50: favours a sealed (closed) 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
RCF L12P4819.5 +0.20.43 +0.03270 +165.5 +1.588.3 -0.2close75 W vs 120 W: lower power handling+
RCF L 12P4819.5 +0.20.421 +0.02270 +165.5 +1.590.6 +2.1close75 W vs 120 W: lower power handling+
SB Acoustics SB34NRX75-619 -0.30.397 =260 +611 +791 +2.5close+
Audax 180040A22.4 +3.10.392 -0.01239.6 -14.48 +488.7 +0.2close16 Ω vs 8 Ω: amp load changes+
Max Speaker PV-1230 8 Ohms20 +0.70.452 +0.05317 +634 =90.5 +2usable+
Scan-Speak 32W/8878T0119.1 -0.20.33 -0.07234 -207.5 +3.589.8 +1.3usable+
Davis 31ST12M24 +4.70.399 =260 +68.9 +4.991.6 +3.1usable+
Davis 31ST12M v201124 +4.70.399 =260 +68.9 +4.991.6 +3.1usable+
Audiotechnology FLEXUNIT 12D775210KAP Custom19 -0.30.388 -0.01340 +868.6 +4.691.1 +2.6usable+
Audiotechnology FLEXUNIT 12B775210KAP Custom19 -0.30.382 -0.02340 +868.6 +4.691.2 +2.7usable+

Compare the closest 3 against the 31SPCT vp jmp norm →

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.