Europsonic HP30/70

12" · 8 Ω · 35 W · 90.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	30 Hz
Qts	0.582
Qes	0.777
Qms	2.322
Vas	204.7 L
Sd	491 cm²
Xmax	4.3 mm
Re	7.3 Ω
Bl	9.1 T·m
Mms	46.5 g
Pe	35 W
Sensitivity	90.9 dB

Alignment hint

EBP	39 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 429.9 L

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
Sphynx SP-W310PP	33 +3	0.618 +0.04	182.8 -21.9	5 +0.7	91 +0.1	close	16 Ω vs 8 Ω: amp load changes	+
Visaton W300	32 +2	0.549 -0.03	190 -14.7	7 +2.7	92.2 +1.3	close		+
ERS HP30/100 07172	30 =	0.588 +0.01	176.8 -27.9	2.8 -1.5	91.2 +0.3	close	Xmax 2.8 mm < 4.3 mm: lower excursion-limited SPL	+
Eminence ACOUSTINATOR N2012	31 +1	0.518 -0.06	177 -27.7	3.9 -0.4	92.4 +1.5	usable	Xmax 3.9 mm < 4.3 mm: lower excursion-limited SPL	+
Philips AD12250W8 vp doum2	28.7 -1.3	0.51 -0.07	237 +32.3	6 +1.7	92.5 +1.6	usable		+
STX W.30.200.8.MC	31 +1	0.622 +0.04	148 -56.7	6.2 +1.9	91.3 +0.4	usable		+
Philips AD12672/W8	29 -1	0.662 +0.08	245 +40.3	6 +1.7	92.3 +1.4	usable		+
MCM Electronics 55-1255	35 +5	0.554 -0.03	197.6 -7.1	3.5 -0.8	93 +2.1	usable	Xmax 3.5 mm < 4.3 mm: lower excursion-limited SPL	+
Hertz Audio HERTZ DS 300	28 -2	0.46 -0.12	176 -28.7	4 -0.3	90.8 -0.1	usable	4 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+
Cabasse 30BZ24 vp oriu2	37 +7	0.543 -0.04	223 +18.3	4 -0.3	93.6 +2.7	usable	16 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 4.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the HP30/70 →

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.