Sphynx SP-W15-BP

15" · 8 Ω · 150 W · 92.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	23.8 Hz
Qts	0.757
Qes	0.913
Qms	4.438
Vas	762.4 L
Sd	912 cm²
Xmax	4 mm
Re	7.9 Ω
Bl	9.4 T·m
Mms	68.4 g
Pe	150 W
Sensitivity	92.5 dB

Alignment hint

EBP	26 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

EBP < 50: favours a sealed (closed) 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
Realistic 40-9000 vp	20.5 -3.3	0.767 +0.01	663 -99.4	6 +2	89.8 -2.7	usable		+
Jamo 20388	27 +3.2	0.848 +0.09	495.6 -266.8	6 +2	93.3 +0.8	usable	100 W vs 150 W: lower power handling	+
Jamo 20388 - 15	27 +3.2	0.848 +0.09	495 -267.4	6 +2	93.3 +0.8	usable	100 W vs 150 W: lower power handling	+
Europsonic HPC38/100	24.9 +1.1	0.66 -0.1	425.4 -337	4.3 +0.3	92 -0.5	usable	50 W vs 150 W: lower power handling	+
AE Speakers DIPOLE 15-D4	21.7 -2.1	0.938 +0.18	623 -139.4	9.4 +5.4	94.1 +1.6	usable	4 Ω vs 8 Ω: amp load changes · 100 W vs 150 W: lower power handling	+
Supravox 400-2000EXC_07V	25 +1.2	0.599 -0.16	444 -318.4	5 +1	93.3 +0.8	usable		+
AE Speakers DIPOLE 15-D16	21.7 -2.1	0.94 +0.18	623 -139.4	9.1 +5.1	88.1 -4.4	usable	16 Ω vs 8 Ω: amp load changes · 100 W vs 150 W: lower power handling	+
Stromberg-Carlson 15 PO	24.6 +0.8	0.563 -0.19	461.6 -300.8	5 +1	91.8 -0.7	usable	16 Ω vs 8 Ω: amp load changes	+
Visaton TIW400 DS 2x4 Ohms	21 -2.8	0.787 +0.03	422 -340.4	15.6 +11.6	91.9 -0.6	usable	4 Ω vs 8 Ω: amp load changes	+
Altec 415C	24.6 +0.8	0.526 -0.23	749.2 -13.2	3 -1	97.4 +4.9	usable	50 W vs 150 W: lower power handling · Xmax 3 mm < 4 mm: lower excursion-limited SPL	+

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

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.