Dayton Audio SD270-88

10" · 4 Ω · 80 W · 93.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	29.6 Hz
Qts	0.44
Qes	0.51
Qms	3.2
Vas	112.2 L
Sd	359.7 cm²
Xmax	6 mm
Re	3.1 Ω
Bl	7.3 T·m
Mms	46.7 g
Pe	80 W
Sensitivity	93.7 dB

Alignment hint

EBP	58 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 70.9 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
JBL LE10A	30 +0.4	0.41 -0.03	101.9 -10.3	6.1 +0.1	92.5 -1.2	close	8 Ω vs 4 Ω: amp load changes · 60 W vs 80 W: lower power handling	+
Beyma 10BR60 V2 vp JF rouge	30.7 +1.1	0.435 -0.01	113.7 +1.5	6.5 +0.5	90.2 -3.5	close	8 Ω vs 4 Ω: amp load changes	+
SB Acoustics SB26SFCL38-4	27.4 -2.2	0.434 -0.01	104 -8.2	7.2 +1.2	92.4 -1.3	close		+
Dayton Audio SD270A-88 DVC	26.2 -3.4	0.433 -0.01	107.5 -4.7	6 =	91.9 -1.8	close		+
Beyma 10BR60 V2	31 +1.4	0.471 +0.03	108.2 -4	6.5 +0.5	90.6 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio DA270-8 10	27.8 -1.8	0.429 -0.01	108.5 -3.7	6.1 +0.1	89.3 -4.4	close	8 Ω vs 4 Ω: amp load changes	+
SICA Z005780	31.7 +2.1	0.455 +0.02	92.6 -19.6	8.9 +2.9	93.5 -0.2	close		+
Focal 10N511	29.6 =	0.371 -0.07	121 +8.8	6 =	92.2 -1.5	close	8 Ω vs 4 Ω: amp load changes · 60 W vs 80 W: lower power handling	+
Volt B250	31.7 +2.1	0.377 -0.06	104 -8.2	6 =	92.8 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
Focal 10V 6411	32.9 +3.3	0.378 -0.06	116.9 +4.7	7 +1	93.4 -0.3	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SD270-88 →

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.