Davis 39GCA15

15" · 8 Ω · 300 W · 95.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	23.6 Hz
Qts	0.33
Qes	0.35
Qms	5.93
Vas	402 L
Sd	804 cm²
Xmax	7.5 mm
Re	5.25 Ω
Bl	15.1 T·m
Mms	103 g
Pe	300 W
Sensitivity	95.6 dB

Alignment hint

EBP	67 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 111.9 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 +1.4	0.322 -0.01	393.6 -8.4	6.4 -1.1	95 -0.6	close	Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
Great Plains Audio 3154 GPA	25 +1.4	0.322 -0.01	393.6 -8.4	6.4 -1.1	95 -0.6	close	Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+
Davis 39GPA15	26.2 +2.6	0.338 +0.01	384 -18	7.5 =	97 +1.4	close		+
Davis 39GCA15 v2024	26.3 +2.7	0.333 =	347 -55	7.5 =	96.6 +1	close		+
Audiotechnology 15F1022510KAP	22 -1.6	0.288 -0.04	410 +8	8.5 +1	94.9 -0.7	close	200 W vs 300 W: lower power handling	+
Audiotechnology FLEXUNIT 15 F 102 25 10 KAP	22 -1.6	0.29 -0.04	410 +8	8.6 +1.1	93.5 -2.1	close		+
AE Speakers TD15S	22.8 -0.8	0.371 +0.04	467 +65	7 -0.5	95.1 -0.5	close	Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
AE Speakers TD15X 8 Ohms	23.2 -0.4	0.287 -0.04	467 +65	7 -0.5	96.3 +0.7	close	Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
Focal 15VX	24 +0.4	0.286 -0.04	380 -22	6 -1.5	95.3 -0.3	close	225 W vs 300 W: lower power handling · Xmax 6 mm < 7.5 mm: lower excursion-limited SPL	+
JBL 2216ND-1	27.6 +4	0.357 +0.03	378.4 -23.6	9.5 +2	96.8 +1.2	close		+

Compare the closest 3 against the 39GCA15 →

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.