Davis 39RPA15

15" · 8 Ω · 200 W · 99.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	31 Hz
Qts	0.27
Qes	0.278
Qms	9.9
Vas	340 L
Sd	907 cm²
Xmax	4 mm
Re	5.37 Ω
Bl	18.3 T·m
Mms	89.4 g
Pe	200 W
Sensitivity	99.3 dB

Alignment hint

EBP	112 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 58 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
Benett 15.200 Z/N	32.9 +1.9	0.265 -0.01	344 +4	5 +1	100.1 +0.8	close		+
Supravox 400 GMF PRO	32 +1	0.263 -0.01	370 +30	4.8 +0.8	99.4 +0.1	close	120 W vs 200 W: lower power handling	+
Focal AUDIOM 15B	31.6 +0.6	0.282 +0.01	330 -10	6 +2	98.8 -0.5	close		+
Great Plains Audio 604-8H III	33.7 +2.7	0.254 -0.02	329.9 -10.1	3.8 -0.2	99.3 =	close	100 W vs 200 W: lower power handling · Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
Great Plains Audio 604-H III	33.7 +2.7	0.254 -0.02	329.9 -10.1	3.8 -0.2	99.3 =	close	100 W vs 200 W: lower power handling · Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
Altec 4156-8A	29 -2	0.28 +0.01	353.7 +13.7	4.3 +0.3	98 -1.3	close		+
Beyma 15LW30	32 +1	0.28 +0.01	325 -15	7 +3	98.8 -0.5	close		+
Monacor SP-385PAX	30 -1	0.285 +0.01	365 +25	4.5 +0.5	98 -1.3	close		+
Beyma 15XA38ND	33 +2	0.288 +0.02	359 +19	6 +2	99 -0.3	close		+
Kenwood TRIO	27 -4	0.27 =	350 +10	5 +1	97.4 -1.9	close		+

Compare the closest 3 against the 39RPA15 →

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.