Great Plains Audio 3154 GPA

15" · 8 Ω · 250 W · 95 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	25 Hz
Qts	0.322
Qes	0.38
Qms	2.12
Vas	393.6 L
Sd	825.8 cm²
Xmax	6.4 mm
Re	6.4 Ω
Bl	16.1 T·m
Mms	98.4 g
Pe	250 W
Sensitivity	95 dB

Alignment hint

EBP	66 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 103 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
Altec 3154	25 =	0.322 =	393.6 =	6.4 =	95 =	close		+
Davis 39GCA15	23.6 -1.4	0.33 +0.01	402 +8.4	7.5 +1.1	95.6 +0.6	close		+
Davis 39GPA15	26.2 +1.2	0.338 +0.02	384 -9.6	7.5 +1.1	97 +2	close		+
Focal 15VX	24 -1	0.286 -0.04	380 -13.6	6 -0.4	95.3 +0.3	close	Xmax 6 mm < 6.4 mm: lower excursion-limited SPL	+
Davis 39GCA15 v2024	26.3 +1.3	0.333 +0.01	347 -46.6	7.5 +1.1	96.6 +1.6	close		+
Supravox 400-2000EXC_11V	25 =	0.308 -0.01	433 +39.4	5 -1.4	96.2 +1.2	close	120 W vs 250 W: lower power handling · Xmax 5 mm < 6.4 mm: lower excursion-limited SPL	+
Audiotechnology 15F1022510KAP	22 -3	0.288 -0.03	410 +16.4	8.5 +2.1	94.9 -0.1	close		+
Monacor SPH-390TC vp	24 -1	0.325 =	297 -96.6	6.2 -0.2	96.2 +1.2	close	4 Ω vs 8 Ω: amp load changes · 150 W vs 250 W: lower power handling · Xmax 6.2 mm < 6.4 mm: lower excursion-limited SPL	+
ATC PA100-375 STD	26 +1	0.377 +0.05	358 -35.6	5.6 -0.8	95.1 +0.1	close	100 W vs 250 W: lower power handling · Xmax 5.6 mm < 6.4 mm: lower excursion-limited SPL	+
JBL 2216ND-1	27.6 +2.6	0.357 +0.03	378.4 -15.2	9.5 +3.1	96.8 +1.8	close		+

Compare the closest 3 against the 3154 GPA →

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.