P.Audio IMF HP-15W

15" · 8 Ω · 300 W · 94.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	30.8 Hz
Qts	0.517
Qes	0.61
Qms	3.41
Vas	304.7 L
Sd	829 cm²
Xmax	3.5 mm
Re	6.6 Ω
Bl	13.3 T·m
Mms	84.4 g
Pe	300 W
Sensitivity	94.5 dB

Alignment hint

EBP	50 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 350 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
Altec 420-8B vp bleu	30.2 -0.6	0.522 +0.01	303.6 -1.1	2.6 -0.9	95.7 +1.2	close	25 W vs 300 W: lower power handling · Xmax 2.6 mm < 3.5 mm: lower excursion-limited SPL	+
Hyper Phase CM15T	35 +4.2	0.508 -0.01	308 +3.3	3.5 =	97 +2.5	close	150 W vs 300 W: lower power handling	+
Kenford PA380 vp	34 +3.2	0.522 +0.01	260 -44.7	3.5 =	95.6 +1.1	close	200 W vs 300 W: lower power handling	+
Stromberg-Carlson RF 484 vp2	31 +0.2	0.598 +0.08	294.9 -9.8	4 +0.5	92.7 -1.8	close	150 W vs 300 W: lower power handling	+
MCM Electronics 55-2974	32.5 +1.7	0.473 -0.04	322.2 +17.5	6 +2.5	95.4 +0.9	close	200 W vs 300 W: lower power handling	+
P.Audio HP-15W	34 +3.2	0.492 -0.03	254.3 -50.4	3.5 =	95.4 +0.9	close		+
PRV Audio 15W 700	31.7 +0.9	0.625 +0.11	308.1 +3.4	6.9 +3.4	94.7 +0.2	close		+
Beyma CM15/T	34 +3.2	0.615 +0.1	293 -11.7	3.5 =	95.4 +0.9	close	200 W vs 300 W: lower power handling	+
Celestion BN15-400X v2018	35.1 +4.3	0.527 +0.01	253 -51.7	4 +0.5	96.5 +2	close		+
Sphynx SP-W15-PRO	32 +1.2	0.616 +0.1	273 -31.7	4 +0.5	92.8 -1.7	usable	16 Ω vs 8 Ω: amp load changes · 150 W vs 300 W: lower power handling	+

Compare the closest 3 against the IMF HP-15W →

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.