Pioneer TS-A2503i vp

12" · 4 Ω · 80 W · 98.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	41 Hz
Qts	0.579
Qes	0.63
Qms	7.19
Vas	162 L
Sd	506 cm²
Xmax	5 mm
Re	3.39 Ω
Bl	6.8 T·m
Mms	33.4 g
Pe	80 W
Sensitivity	98.2 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 329.6 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
Fane 12 W vp	53.6 +12.6	0.598 +0.02	160 -2	5 =	99.2 +1	close	8 Ω vs 4 Ω: amp load changes	+
Focal W31B	40 -1	0.58 =	125 -37	6 +1	95.8 -2.4	close	8 Ω vs 4 Ω: amp load changes	+
Davis KIT ALBEDO	37.5 -3.5	0.459 -0.12	166 +4	5 =	96.5 -1.7	usable	8 Ω vs 4 Ω: amp load changes	+
LaVoce LBASS12-15	38 -3	0.48 -0.1	160.93 -1.07	4.7 -0.3	95.5 -2.7	usable	8 Ω vs 4 Ω: amp load changes · Xmax 4.7 mm < 5 mm: lower excursion-limited SPL	+
Electro-Voice SP12C	45 +4	0.665 +0.09	167.1 +5.1	4 -1	96.7 -1.5	usable	8 Ω vs 4 Ω: amp load changes · 50 W vs 80 W: lower power handling · Xmax 4 mm < 5 mm: lower excursion-limited SPL	+
Eminence LEGEND BP122 8 Ohms	35 -6	0.537 -0.04	157.4 -4.6	6.2 +1.2	94.2 -4	usable	8 Ω vs 4 Ω: amp load changes	+
Monacor SP-302C	33 -8	0.607 +0.03	155 -7	5 =	94.3 -3.9	usable		+
Audax LFP501	40 -1	0.521 -0.06	138 -24	4.5 -0.5	94.6 -3.6	usable	8 Ω vs 4 Ω: amp load changes · Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
Audax PR30ST100	40 -1	0.521 -0.06	138 -24	4.5 -0.5	94.6 -3.6	usable	8 Ω vs 4 Ω: amp load changes · Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
Eminence LTD-12MK2	37.9 -3.1	0.485 -0.09	123.2 -38.8	5.6 +0.6	98 -0.2	usable		+

Compare the closest 3 against the TS-A2503i vp →

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.