Sphynx SP-W15-SONO

15" · 8 Ω · 150 W · 100.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38 Hz
Qts	0.331
Qes	0.387
Qms	2.31
Vas	376 L
Sd	855 cm²
Xmax	4 mm
Re	5.5 Ω
Bl	12.7 T·m
Mms	47.8 g
Pe	150 W
Sensitivity	100.9 dB

Alignment hint

EBP	98 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 105.5 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
Sphynx WRB15	38 =	0.331 =	376 =	4 =	99.2 -1.7	close	16 Ω vs 8 Ω: amp load changes	+
Altec 515-8C vp jpvoit	34.2 -3.8	0.337 +0.01	414.9 +38.9	4.1 +0.1	98.6 -2.3	close	75 W vs 150 W: lower power handling	+
Sonido SCW-400	34 -4	0.339 +0.01	357 -19	5 +1	98.6 -2.3	close		+
Eminence KAPPA-15A	33 -5	0.32 -0.01	321.3 -54.7	4 =	100.5 -0.4	close		+
Eminence LEGEND CB15	34 -4	0.339 +0.01	336 -40	4.8 +0.8	98.8 -2.1	close		+
AE Speakers TD15M 4 Ohms	34.7 -3.3	0.327 =	312 -64	6 +2	102.1 +1.2	close	4 Ω vs 8 Ω: amp load changes	+
Iconic Speakers 165-8G	37 -1	0.265 -0.07	363.7 -12.3	3.5 -0.5	101.3 +0.4	usable	75 W vs 150 W: lower power handling · Xmax 3.5 mm < 4 mm: lower excursion-limited SPL	+
ATC SB100-375SC	30 -8	0.322 -0.01	380 +4	4.2 +0.2	98 -2.9	usable	100 W vs 150 W: lower power handling	+
Altec 515-8G	37 -1	0.269 -0.06	351.1 -24.9	3.5 -0.5	101.1 +0.2	usable	75 W vs 150 W: lower power handling · Xmax 3.5 mm < 4 mm: lower excursion-limited SPL	+
Great Plains Audio 515-8G GPA	37 -1	0.269 -0.06	351.1 -24.9	3.5 -0.5	101.1 +0.2	usable	75 W vs 150 W: lower power handling · Xmax 3.5 mm < 4 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SP-W15-SONO →

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.