Rythmik Audio DS1501

15" · 4 Ω · 300 W · 92.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	17.5 Hz
Qts	0.315
Qes	0.344
Qms	3.737
Vas	295 L
Sd	809 cm²
Xmax	7.5 mm
Re	3 Ω
Bl	15.7 T·m
Mms	257.2 g
Pe	300 W
Sensitivity	92.9 dB

Alignment hint

EBP	51 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 73 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
Dayton Audio ST385-8	18.8 +1.3	0.317 =	301 +6	7.9 +0.4	91.2 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
Oxygen ALIUM 380	18 +0.5	0.3 -0.02	322 +27	7.9 +0.4	93.3 +0.4	close	200 W vs 300 W: lower power handling	+
TC Sounds TC2000 vp	18 +0.5	0.323 +0.01	267 -28	14 +6.5	92.5 -0.4	close		+
Adire Audio TEMPEST DVC 4 Ohms config	18.8 +1.3	0.377 +0.06	317 +22	8.2 +0.7	92.8 -0.1	close		+
Dayton Audio DCS385-4	17.5 =	0.389 +0.07	311 +16	9.3 +1.8	91.8 -1.1	close		+
Monacor SPH-380TC série	21.5 +4	0.279 -0.04	275 -20	7.4 -0.1	91.9 -1	usable	8 Ω vs 4 Ω: amp load changes · Xmax 7.4 mm < 7.5 mm: lower excursion-limited SPL	+
Visaton TIW400	23 +5.5	0.348 +0.03	300 +5	10.6 +3.1	93.3 +0.4	usable	8 Ω vs 4 Ω: amp load changes	+
Next Audio AL 38	16 -1.5	0.369 +0.05	347.7 +52.7	7.5 =	91.2 -1.7	usable	200 W vs 300 W: lower power handling	+
SB Acoustics SB42FHCL75-6	18.4 +0.9	0.307 -0.01	462 +167	11.5 +4	93.9 +1	usable	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio TS400D-4 TITANIC MK 4	17.1 -0.4	0.367 +0.05	261 -34	18.8 +11.3	90.3 -2.6	usable		+

Compare the closest 3 against the DS1501 →

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.