ERS HP30/100 07172

12" · 8 Ω · 100 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	30 Hz
Qts	0.588
Qes	0.733
Qms	2.982
Vas	176.8 L
Sd	434 cm²
Xmax	2.8 mm
Re	6.2 Ω
Bl	8.2 T·m
Mms	42 g
Pe	100 W
Sensitivity	91.2 dB

Alignment hint

EBP	41 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 396.3 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
Europsonic HP30/70	30 =	0.582 -0.01	204.7 +27.9	4.3 +1.5	90.9 -0.3	close	35 W vs 100 W: lower power handling	+
Sphynx SP-W310PP	33 +3	0.618 +0.03	182.8 +6	5 +2.2	91 -0.2	close	16 Ω vs 8 Ω: amp load changes	+
Eminence ACOUSTINATOR N2012	31 +1	0.518 -0.07	177 +0.2	3.9 +1.1	92.4 +1.2	close		+
STX W.30.200.8.MC	31 +1	0.622 +0.03	148 -28.8	6.2 +3.4	91.3 +0.1	close		+
Visaton W300	32 +2	0.549 -0.04	190 +13.2	7 +4.2	92.2 +1	close		+
JBL 2145A	30 =	0.508 -0.08	155.7 -21.1	3.6 +0.8	93 +1.8	close	50 W vs 100 W: lower power handling	+
JBL LE12C	30 =	0.508 -0.08	155.7 -21.1	3.6 +0.8	93 +1.8	close	50 W vs 100 W: lower power handling	+
Selenium STREET BASS 12W2A	30 =	0.46 -0.13	164 -12.8	3.75 +0.95	91.5 +0.3	close	4 Ω vs 8 Ω: amp load changes	+
MCM Electronics 55-1255	35 +5	0.554 -0.03	197.6 +20.8	3.5 +0.7	93 +1.8	usable		+
Hertz Audio HERTZ DS 300	28 -2	0.46 -0.13	176 -0.8	4 +1.2	90.8 -0.4	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the HP30/100 07172 →

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.