Cyrille Audio GM38F76P

15" · 8 Ω · 350 W · 97.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38.8 Hz
Qts	0.419
Qes	0.44
Qms	8.877
Vas	192.6 L
Sd	907.9 cm²
Xmax	6.6 mm
Re	5.45 Ω
Bl	17.5 T·m
Mms	100.9 g
Pe	350 W
Sensitivity	97.7 dB

Alignment hint

EBP	88 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 104.2 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
Beyma 15CXA400Fe	40 +1.2	0.419 =	191 -1.6	6 -0.6	97.6 -0.1	close	Xmax 6 mm < 6.6 mm: lower excursion-limited SPL	+
18 Sound 15W750	40 +1.2	0.42 =	182 -10.6	8 +1.4	98 +0.3	close	16 Ω vs 8 Ω: amp load changes	+
B&C 15 FCX 76	40 +1.2	0.445 +0.03	187 -5.6	6.5 -0.1	97.9 +0.2	close	Xmax 6.5 mm < 6.6 mm: lower excursion-limited SPL	+
18 Sound 15ND930	38 -0.8	0.39 -0.03	195 +2.4	7.5 +0.9	97 -0.7	close	16 Ω vs 8 Ω: amp load changes	+
Beyma SM115	42 +3.2	0.405 -0.01	185 -7.6	6.7 +0.1	98.2 +0.5	close		+
Beyma 15CMV2	37 -1.8	0.391 -0.03	188 -4.6	6.5 -0.1	96.8 -0.9	close	Xmax 6.5 mm < 6.6 mm: lower excursion-limited SPL	+
Selenium 15PW5	40 +1.2	0.4 -0.02	190 -2.6	5.7 -0.9	98.3 +0.6	close	Xmax 5.7 mm < 6.6 mm: lower excursion-limited SPL	+
Eminence Kl3015CX-8 vp	38 -0.8	0.438 +0.02	219.7 +27.1	7.8 +1.2	97.5 -0.2	close		+
Fane SOVEREIGN PRO 15-600 LF	40 +1.2	0.364 -0.05	188 -4.6	6.9 +0.3	97.9 +0.2	close		+
BMS 15N630	39 +0.2	0.42 =	152 -40.6	8 +1.4	98 +0.3	close		+

Compare the closest 3 against the GM38F76P →

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.