Next Audio AL 38

15" · 4 Ω · 200 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	16 Hz
Qts	0.369
Qes	0.39
Qms	6.91
Vas	347.7 L
Sd	824 cm²
Xmax	7.5 mm
Re	3.5 Ω
Bl	15.6 T·m
Mms	270.9 g
Pe	200 W
Sensitivity	91.2 dB

Alignment hint

EBP	41 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 130.1 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
Dayton Audio DCS385-4	17.5 +1.5	0.389 +0.02	311 -36.7	9.3 +1.8	91.8 +0.6	close		+
Adire Audio TEMPEST DVC 4 Ohms config	18.8 +2.8	0.377 +0.01	317 -30.7	8.2 +0.7	92.8 +1.6	close		+
Dayton Audio ST385-8	18.8 +2.8	0.317 -0.05	301 -46.7	7.9 +0.4	91.2 =	usable	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio TS400D-4 TITANIC MK 4	17.1 +1.1	0.367 =	261 -86.7	18.8 +11.3	90.3 -0.9	usable		+
Rythmik Audio DS1501	17.5 +1.5	0.315 -0.05	295 -52.7	7.5 =	92.9 +1.7	usable		+
Oxygen ALIUM 380	18 +2	0.3 -0.07	322 -25.7	7.9 +0.4	93.3 +2.1	usable		+
Dayton Audio RSS390HF-4	18 +2	0.423 +0.05	281.8 -65.9	14 +6.5	91.1 -0.1	usable		+
Rythmik Audio DS1510	15.4 -0.6	0.472 +0.1	430 +82.3	10 +2.5	90.9 -0.3	usable		+
SB Acoustics SB42FHC75-6	22.5 +6.5	0.372 =	318 -29.7	10.1 +2.6	94 +2.8	usable	8 Ω vs 4 Ω: amp load changes	+
Monacor SP-380P v2000	20 +4	0.337 -0.03	450 +102.3	9.4 +1.9	92.5 +1.3	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the AL 38 →

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.