Monacor SPH-390TC 4 Ohms v2017

15" · 4 Ω · 150 W · 96.7 dB

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	23 Hz
Qts	0.277
Qes	0.29
Qms	6.36
Vas	284 L
Sd	850 cm²
Xmax	5.8 mm
Re	3.25 Ω
Bl	16.6 T·m
Mms	170.8 g
Pe	150 W
Sensitivity	96.7 dB

Alignment hint

EBP	79 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 51.5 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
Monacor SPH-390TC 4 Ohms	23 =	0.277 =	284 =	5.8 =	96.7 =	close		+
Monacor SPH-390TC vp1	22.7 -0.3	0.276 =	351 +67	6.4 +0.6	97.3 +0.6	close		+
Rockford Fosgate PWR-415	24 +1	0.283 +0.01	334 +50	6.2 +0.4	97.4 +0.7	close		+
Focal 38VX	22.3 -0.7	0.279 =	347 +63	8.2 +2.4	96.9 +0.2	close		+
JBL 1500 AL	27.3 +4.3	0.274 =	264.6 -19.4	5.5 -0.3	96.5 -0.2	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 5.8 mm: lower excursion-limited SPL	+
Peerless SLS15	24.1 +1.1	0.268 -0.01	321.5 +37.5	6.4 +0.6	94.8 -1.9	close	8 Ω vs 4 Ω: amp load changes	+
TVM ARA 390-00/8 v1	25 +2	0.275 =	313 +29	5.5 -0.3	94.6 -2.1	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 5.8 mm: lower excursion-limited SPL	+
Monacor SPH-390TC vp	24 +1	0.325 +0.05	297 +13	6.2 +0.4	96.2 -0.5	close		+
Magnat SUPREME 3800	25 +2	0.31 +0.03	271 -13	8.6 +2.8	97.3 +0.6	close		+
RCF L 15P200 v1983	29 +6	0.291 +0.01	280 -4	7.4 +1.6	96.6 -0.1	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SPH-390TC 4 Ohms v2017 →

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.