Monacor SPH-390TC vp1

15" · 4 Ω · 150 W · 97.3 dB

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	22.7 Hz
Qts	0.276
Qes	0.291
Qms	5.493
Vas	351 L
Sd	855 cm²
Xmax	6.4 mm
Re	3.3 Ω
Bl	15.2 T·m
Mms	143.5 g
Pe	150 W
Sensitivity	97.3 dB

Alignment hint

EBP	78 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 63.1 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
Focal 38VX	22.3 -0.4	0.279 =	347 -4	8.2 +1.8	96.9 -0.4	close		+
Rockford Fosgate PWR-415	24 +1.3	0.283 +0.01	334 -17	6.2 -0.2	97.4 +0.1	close	Xmax 6.2 mm < 6.4 mm: lower excursion-limited SPL	+
Monacor SPH-390TC 4 Ohms	23 +0.3	0.277 =	284 -67	5.8 -0.6	96.7 -0.6	close	Xmax 5.8 mm < 6.4 mm: lower excursion-limited SPL	+
Monacor SPH-390TC 4 Ohms v2017	23 +0.3	0.277 =	284 -67	5.8 -0.6	96.7 -0.6	close	Xmax 5.8 mm < 6.4 mm: lower excursion-limited SPL	+
Peerless SLS15	24.1 +1.4	0.268 -0.01	321.5 -29.5	6.4 =	94.8 -2.5	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 15k200	27 +4.3	0.262 -0.01	345 -6	7.5 +1.1	97 -0.3	close	8 Ω vs 4 Ω: amp load changes	+
Focal 15VX	24 +1.3	0.286 +0.01	380 +29	6 -0.4	95.3 -2	close	8 Ω vs 4 Ω: amp load changes · Xmax 6 mm < 6.4 mm: lower excursion-limited SPL	+
Beyma SM-115/K	27 +4.3	0.253 -0.02	345 -6	8 +1.6	97.5 +0.2	close	8 Ω vs 4 Ω: amp load changes	+
Usher Audio 15HM Studio	27 +4.3	0.28 =	385 +34	5.9 -0.5	98 +0.7	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.9 mm < 6.4 mm: lower excursion-limited SPL	+
Dayton Audio 15LF ODEUM	25.5 +2.8	0.26 -0.02	331.3 -19.7	9.3 +2.9	96 -1.3	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SPH-390TC vp1 →

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.