Audax LFH507

12" · 8 Ω · 100 W · 92 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	20 Hz
Qts	0.483
Qes	0.6
Qms	2.47
Vas	513.5 L
Sd	530 cm²
Xmax	4.5 mm
Re	5.4 Ω
Bl	7.4 T·m
Mms	48.6 g
Pe	100 W
Sensitivity	92 dB

Alignment hint

EBP	33 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 449.2 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
Realistic 40-1025	21.5 +1.5	0.452 -0.03	526 +12.5	11.4 +6.9	93.3 +1.3	close		+
Audax PR300 MO AP	25 +5	0.468 -0.01	457 -56.5	4.4 -0.1	94 +2	usable	Xmax 4.4 mm < 4.5 mm: lower excursion-limited SPL	+
Max Speaker PV-1230 4 Ohms	20 =	0.452 -0.03	317 -196.5	4 -0.5	93.4 +1.4	usable	4 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Celestion T1600 vp 1	23.6 +3.6	0.463 -0.02	350 -163.5	4 -0.5	92.2 +0.2	usable	Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Max Speaker PV-1230 8 Ohms	20 =	0.452 -0.03	317 -196.5	4 -0.5	90.5 -1.5	usable	Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Davis 31ST12M v2009	22 +2	0.39 -0.09	398 -115.5	9 +4.5	91.8 -0.2	usable		+
SEAS 33F-WK MH	21.6 +1.6	0.383 -0.1	327.7 -185.8	5 +0.5	92.1 +0.1	usable		+
Audiotechnology FLEXUNIT 12D775210KAP Custom	19 -1	0.388 -0.09	340 -173.5	8.6 +4.1	91.1 -0.9	usable		+
Audiotechnology FLEXUNIT 12B775210KAP Custom	19 -1	0.382 -0.1	340 -173.5	8.6 +4.1	91.2 -0.8	usable		+
RCF L 12P48	19.5 -0.5	0.421 -0.06	270 -243.5	5.5 +1	90.6 -1.4	usable	75 W vs 100 W: lower power handling	+

Compare the closest 3 against the LFH507 →

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.