Scan-Speak 32W/4878T01

12" · 4 Ω · 150 W · 94.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	23 Hz
Qts	0.286
Qes	0.3
Qms	6
Vas	170 L
Sd	531 cm²
Xmax	7 mm
Re	3.1 Ω
Bl	12.9 T·m
Mms	111.3 g
Pe	150 W
Sensitivity	94.5 dB

Alignment hint

EBP	77 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 33.3 L

EBP 50-100: works in either a sealed or ported 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
JBL 252G	23 =	0.25 -0.04	178 +8	7 =	93.8 -0.7	close	8 Ω vs 4 Ω: amp load changes	+
Axon 12K01	25 +2	0.289 =	191.8 +21.8	6.7 -0.3	95.4 +0.9	close	Xmax 6.7 mm < 7 mm: lower excursion-limited SPL	+
Visaton TIW300	25 +2	0.282 =	160 -10	9.7 +2.7	92.9 -1.6	close	8 Ω vs 4 Ω: amp load changes	+
STX W.STX.12.2.500.4.F.S.MC	25 +2	0.31 +0.02	151 -19	7.5 +0.5	94.3 -0.2	close		+
TVM ARN 312-00/4	22 -1	0.289 =	206 +36	6.4 -0.6	93.8 -0.7	close	100 W vs 150 W: lower power handling · Xmax 6.4 mm < 7 mm: lower excursion-limited SPL	+
Great Plains Audio 3124 GPA	26 +3	0.288 =	186.9 +16.9	6.4 -0.6	93.1 -1.4	close	8 Ω vs 4 Ω: amp load changes · Xmax 6.4 mm < 7 mm: lower excursion-limited SPL	+
STX W.32.500.8.MC	25 +2	0.299 +0.01	155 -15	7.5 +0.5	92.1 -2.4	close	8 Ω vs 4 Ω: amp load changes	+
Altec 3124	26 +3	0.288 =	186.9 +16.9	6.4 -0.6	92.9 -1.6	close	8 Ω vs 4 Ω: amp load changes · Xmax 6.4 mm < 7 mm: lower excursion-limited SPL	+
Eton 12-680/A8/62 HEX SYMPHONIE II	26 +3	0.296 +0.01	173 +3	6 -1	92.8 -1.7	close	8 Ω vs 4 Ω: amp load changes · Xmax 6 mm < 7 mm: lower excursion-limited SPL	+
Pioneer TS-W304C	22.3 -0.7	0.274 -0.01	134 -36	9.8 +2.8	93.5 -1	close		+

Compare the closest 3 against the 32W/4878T01 →

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.