Davis 38RCA15

15" · 8 Ω · 200 W · 98.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	29 Hz
Qts	0.24
Qes	0.248
Qms	7
Vas	373 L
Sd	804 cm²
Xmax	5 mm
Re	6.95 Ω
Bl	19.3 T·m
Mms	73.2 g
Pe	200 W
Sensitivity	98.2 dB

Alignment hint

EBP	117 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 48.6 L

EBP > 100: favours a ported (bass-reflex) 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 40RCA15 vp3	26.2 -2.8	0.218 -0.02	380.7 +7.7	5 =	98.6 +0.4	close		+
Focal AUDIOM 15	32.5 +3.5	0.236 =	379.7 +6.7	6 +1	100.4 +2.2	close		+
RCF L 15/541	30.9 +1.9	0.236 =	300 -73	5.6 +0.6	98.1 -0.1	close		+
Supravox 400 GMF PRO	32 +3	0.263 +0.02	370 -3	4.8 -0.2	99.4 +1.2	close	120 W vs 200 W: lower power handling · Xmax 4.8 mm < 5 mm: lower excursion-limited SPL	+
Beyma SM-115/K	27 -2	0.253 +0.01	345 -28	8 +3	97.5 -0.7	close		+
Kenwood TRIO	27 -2	0.27 +0.03	350 -23	5 =	97.4 -0.8	close		+
Usher Audio 15HM Studio	27 -2	0.28 +0.04	385 +12	5.9 +0.9	98 -0.2	close	150 W vs 200 W: lower power handling	+
Altec 515-8LF	27.4 -1.6	0.255 +0.02	470.1 +97.1	5.1 +0.1	98.4 +0.2	close	125 W vs 200 W: lower power handling	+
Great Plains Audio 515-8LF GPA	27.4 -1.6	0.255 +0.02	470.1 +97.1	5.1 +0.1	98.4 +0.2	close	125 W vs 200 W: lower power handling	+
Altec 4156-8A	29 =	0.28 +0.04	353.7 -19.3	4.3 -0.7	98 -0.2	close	Xmax 4.3 mm < 5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 38RCA15 →

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.