Davis 39GPA15

15" · 8 Ω · 300 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	26.2 Hz
Qts	0.338
Qes	0.36
Qms	5.64
Vas	384 L
Sd	804 cm²
Xmax	7.5 mm
Re	4.9 Ω
Bl	14 T·m
Mms	86.8 g
Pe	300 W
Sensitivity	97 dB

Alignment hint

EBP	73 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 113.7 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
Davis 39GCA15 v2024	26.3 +0.1	0.333 -0.01	347 -37	7.5 =	96.6 -0.4	close		+
JBL 2216ND-1	27.6 +1.4	0.357 +0.02	378.4 -5.6	9.5 +2	96.8 -0.2	close		+
Davis 39GCA15	23.6 -2.6	0.33 -0.01	402 +18	7.5 =	95.6 -1.4	close		+
Crites Speakers CW1526 V2017	26.3 +0.1	0.346 +0.01	437.2 +53.2	7.2 -0.3	99.1 +2.1	close	4 Ω vs 8 Ω: amp load changes · 150 W vs 300 W: lower power handling · Xmax 7.2 mm < 7.5 mm: lower excursion-limited SPL	+
Altec 3154	25 -1.2	0.322 -0.02	393.6 +9.6	6.4 -1.1	95 -2	close	Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
Great Plains Audio 3154 GPA	25 -1.2	0.322 -0.02	393.6 +9.6	6.4 -1.1	95 -2	close	Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
JBL 2216ND (pour JBL 4367)	28.3 +2.1	0.376 +0.04	333 -51	9.5 +2	96.3 -0.7	close		+
TAD TL-1601 B	28 +1.8	0.342 =	307 -77	6.8 -0.7	95.5 -1.5	close	200 W vs 300 W: lower power handling · Xmax 6.8 mm < 7.5 mm: lower excursion-limited SPL	+
TAD TL-1603	28 +1.8	0.342 =	304 -80	6.8 -0.7	95.5 -1.5	close	200 W vs 300 W: lower power handling · Xmax 6.8 mm < 7.5 mm: lower excursion-limited SPL	+
Beyma 15k200	27 +0.8	0.262 -0.08	345 -39	7.5 =	97 =	usable		+

Compare the closest 3 against the 39GPA15 →

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.